我是靠谱客的博主 醉熏大树，最近开发中收集的这篇文章主要介绍Launcher中修改桌面壁纸、锁屏壁纸和手机图标Launcher中增加主题的更换（图标、壁纸和锁屏壁纸）–2，觉得挺不错的，现在分享给大家，希望可以做个参考。
概述
Launcher中增加主题的更换（图标、壁纸和锁屏壁纸）–2
1、整体思路
1.1、桌面长按弹出小控件，加上一个切换主题的按钮
1.2、在主题控制界面布局主题切换按钮
1.3、将准备好的图标资源加载进模块（drawable）
1.4、找到桌面图标显示类
1.5、在布局桌面图标方法中加上逻辑
1.6、将准备的图标替换原图标
2、实现
2.1、通过在strings.xml进行壁纸的id的全局搜索 wallpaper_button_text
2.2、发现在OptionsPopupView.java类中的getOptions()方法
/**
* Returns the list of supported actions
*/
public static ArrayList<OptionItem> getOptions(Launcher launcher) {
ArrayList<OptionItem> options = new ArrayList<>();
options.add(new OptionItem(launcher,
R.string.settings_button_text, // ==> 标题
R.drawable.ic_setting, // ==> 标题左侧图标
LAUNCHER_SETTINGS_BUTTON_TAP_OR_LONGPRESS, // ==> 桌面事件
OptionsPopupView::startSettings)); // ==> 点击后是实现的方法/跳转
if (!WidgetsModel.GO_DISABLE_WIDGETS) {
options.add(new OptionItem(launcher,
R.string.widget_button_text,
R.drawable.ic_widget,
LAUNCHER_WIDGETSTRAY_BUTTON_TAP_OR_LONGPRESS,
OptionsPopupView::onWidgetsClicked));
}
int resString = Utilities.existsStyleWallpapers(launcher) ?
R.string.styles_wallpaper_button_text : R.string.wallpaper_button_text;
int resDrawable = Utilities.existsStyleWallpapers(launcher) ?
R.drawable.ic_palette : R.drawable.ic_wallpaper;
options.add(new OptionItem(launcher,
resString,
resDrawable,
IGNORE,
OptionsPopupView::startWallpaperPicker));
return options;
}
2.3、在原代码的基础上加上一个修改主题的部件，代码如下：
options.add(new OptionItem(launcher,
R.string.custom_theme_text,
R.drawable.ic_customsize_theme,
IGNORE,
OptionsPopupView::startThemeSettings));
2.4、编写跳转到主题切换页面的方法
/**
* Click to jump to the topic section page
* @param v
* @return
*/
private static boolean startThemeSettings(View v){
Launcher launcher = Launcher.getLauncher(v.getContext());
launcher.startActivity(new Intent("android.intent.action.SET_THEME")
.setPackage(launcher.getPackageName())
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
return true;
}
2.5、需要在AndroidManifest-common.xml中注册Activity
<!-- Register a new theme activity -->
<activity
android:name="com.android.launcher3.settings.ThemeSettings"
android:label="Set Theme"
android:theme="@style/HomeSettingsTheme"
android:exported="true"
android:autoRemoveFromRecents="true">
<intent-filter>
<action android:name="android.intent.action.SET_THEME"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
2.6、主题控制代码
创建布局文件theme_settings_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:title="Settings_theme" />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@mipmap/wallpaper_03"
android:layout_weight="9"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_weight="1"
android:orientation="horizontal">
<Button
android:id="@+id/modify_theme"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:text="Modify_Theme"
android:layout_gravity="center"
android:gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="5dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"/>
<Button
android:id="@+id/default_theme"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:text="Default_Theme"
android:layout_gravity="center"
android:gravity="center"
android:layout_weight="1"/>
</LinearLayout>
</LinearLayout>
自定义java代码 ThemeSettings 继承自 FragmentActivity ，代码如下：
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3.settings;
import android.annotation.SuppressLint;
import android.app.WallpaperManager;
import android.content.SharedPreferences;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import com.android.launcher3.R;
import androidx.annotation.Nullable;
import androidx.fragment.app.FragmentActivity;
import java.io.IOException;
/**
* Change the theme control page
*/
public class ThemeSettings extends FragmentActivity implements View.OnClickListener {
private TextView modify_theme,default_theme;
private WallpaperManager wallpaperManager;
private SharedPreferences sp;
private SharedPreferences.Editor editor;
private Context mContext;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.theme_settings_layout);
mContext = this;
init();
}
public void init(){
wallpaperManager = (WallpaperManager) getSystemService(mContext.WALLPAPER_SERVICE);
modify_theme = (TextView) findViewById(R.id.modify_theme);
default_theme = (TextView) findViewById(R.id.default_theme);
modify_theme.setOnClickListener(this);
default_theme.setOnClickListener(this);
if (sp == null){
sp = getSharedPreferences("theme_index_name",MODE_PRIVATE);
if (sp.getInt("theme_index",-1) == -1){
editor=sp.edit();
editor.putInt("theme_index",3);
editor.apply();
}
}
}
public void setModify_theme(){
try {
editor = sp.edit();
editor.putInt("theme_index",1);
editor.apply();
wallpaperManager.setResource(R.mipmap.wallpaper_03);
} catch (IOException e) {
e.printStackTrace();
}
}
public void setDefault_theme(){
try {
editor = sp.edit();
editor.putInt("theme_index",3);
editor.apply();
wallpaperManager.setResource(R.mipmap.default_wallpaper);
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onClick(View view) {
if (view.getId()==R.id.modify_theme){
setModify_theme();
finish();
}else if (view.getId() == R.id.default_theme){
setDefault_theme();
finish();
}
}
}
2.7、在BubbleTextView类种添加逻辑识别主题
**参考内容：https://blog.csdn.net/CGTAIHYQ/article/details/122047301?spm=1001.2101.3001.6650.5&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-5-122047301-blog-112762072.pc_relevant_blogantidownloadv1&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-5-122047301-blog-112762072.pc_relevant_blogantidownloadv1 **
BubbleTextView类是Launcher所有图标文字显示的父类，包括文字的大小，文字刷新的父类。其中的applyIconAndLabel方法将图标加载到桌面布局中。在方法体中setIcon(iconDrawable)；代码之前加上关键代码
@UiThread
protected void applyIconAndLabel(ItemInfoWithIcon info) {
boolean useTheme = mDisplay == DISPLAY_WORKSPACE || mDisplay == DISPLAY_FOLDER;
// FastBitmapDrawable iconDrawable = info.newIcon(getContext(), useTheme);
sharedPreferences=getContext().getSharedPreferences("theme_index_name",Context.MODE_PRIVATE);
int a = sharedPreferences.getInt("theme_index",-1);
String[] appPackageAndClassName = getContext().getResources().getStringArray(R.array.change_icon_package_name);
if (a==-1 || a==3){
iconDrawable = info.newIcon(getContext(), useTheme);
}else{
changThemeOfIcon(appPackageAndClassName,info,useTheme);
}
mDotParams.color = IconPalette.getMutedColor(iconDrawable.getIconColor(), 0.54f);
setIcon(iconDrawable);
applyLabel(info);
}
**changThemeOfIcon()**方法
private void changThemeOfIcon(String[] appPackageAndClassName,ItemInfoWithIcon info,boolean useTheme){
Drawable drawable = pkgAndIcon.get(info.getTargetPackage().toString());
if (drawable!=null){
BitmapDrawable bd = (BitmapDrawable) drawable;
Bitmap bitmap = bd.getBitmap();
iconDrawable = new FastBitmapDrawable(bitmap);
}else{
iconDrawable = info.newIcon(getContext(), useTheme);
}
}
2.8、将主题内需要更换图标的应用包写入string.xml资源文件，便于图标与包名一一对应。
<!-- Settings PackageName -->
<string-array name="change_icon_package_name">
<item>com.google.android.dialer</item>
<item>com.google.android.apps.messaging</item>
<item>com.google.android.apps.maps</item>
<item>com.android.chrome</item>
<item>com.google.android.gm</item>
<item>com.google.android.apps.photos</item>
<item>com.google.android.calculator</item>
<item>com.google.android.calendar</item>
<item>com.android.settings</item>
<item>com.google.android.deskclock</item>
<item>com.google.android.contacts</item>
<item>com.google.android.apps.nbu.files</item>
<item>com.google.android.apps.docs</item>
<item>com.android.fmradio</item>
<item>com.google.android.apps.googleassistant</item>
<item>com.google.android.videos</item>
<item>com.google.android.youtube</item>
<!-- <item>com.android.chrome</item>-->
<!-- <item>com.android.settings</item>-->
<!-- <item>com.android.vending</item>-->
<!-- <item>com.google.android.apps.docs</item>-->
<!-- <item>com.google.android.apps.maps</item>-->
<!-- <item>com.google.android.apps.messaging</item>-->
<!-- <item>com.google.android.apps.photos</item>-->
<!-- <item>com.google.android.apps.tachyon</item>-->
<!-- <item>com.google.android.apps.youtube.music</item>-->
<!-- <item>com.google.android.calculator</item>-->
<!-- <item>com.google.android.calendar</item>-->
<!-- <item>com.google.android.contacts</item>-->
<!-- <item>com.google.android.deskclock</item>-->
<!-- <item>com.google.android.dialer</item>-->
<!-- <item>com.google.android.gm</item>-->
<!-- <item>com.google.android.videos</item>-->
<!-- <item>com.google.android.youtube</item>-->
<!-- <item>com.android.fmradio</item>-->
<!-- <item>com.android.stk</item>-->
<!-- <item>com.bullitt.catphones.register.app</item>-->
<!-- <item>com.bullitt.support</item>-->
<!-- <item>com.debug.loggerui</item>-->
<!-- <item>com.device.performance</item>-->
<!-- <item>com.google.android.apps.googleassistant</item>-->
<!-- <item>com.google.android.apps.nbu.files</item>-->
<!-- <item>com.google.android.googlequicksearchbox</item>-->
<!-- <item>com.google.android.keep</item>-->
<!-- <item>com.mediatek.gnss.nonframeworklbs</item>-->
<!-- <item>com.mobisystems.office</item>-->
<!-- <item>com.st.nfc.dta</item>-->
<!-- <item>com.toolbox.app</item>-->
<!-- <item>com.tinno.lancher3demo</item>-->
</string-array>
获取图标资源的方法
private Map<String,Drawable> getDrawableRes(){
ArrayList<Drawable> drawables=new ArrayList<>();
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_dialer));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_messaging));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_maps));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_chrome));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_gmail));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_photo));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_calculator));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_calendar));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.android_settings));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_clock));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_contacts));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_files));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_docs));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.android_fmradio));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_assistant));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_video));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_youtube));
String[] appPackageAndClassName = getContext().getResources().getStringArray(R.array.change_icon_package_name);
Map<String,Drawable> pkgAndIcon=new HashMap<String,Drawable>();
for (int i = 0; i < appPackageAndClassName.length; i++) {
pkgAndIcon.put(appPackageAndClassName[i],drawables.get(i));
}
return pkgAndIcon;
}
private SharedPreferences sharedPreferences;
private FastBitmapDrawable iconDrawable;
// Get the map corresponding to the entire application name and icon
private Map<String,Drawable> pkgAndIcon=getDrawableRes();
BubbleTextView.java类完整代码：
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3;
import static com.android.launcher3.graphics.PreloadIconDrawable.newPendingIcon;
import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.text.TextUtils.TruncateAt;
import android.util.AttributeSet;
import android.util.Property;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewDebug;
import android.widget.TextView;
import androidx.annotation.Nullable;
import androidx.annotation.UiThread;
import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
import com.android.launcher3.dot.DotInfo;
import com.android.launcher3.dragndrop.DraggableView;
import com.android.launcher3.folder.FolderIcon;
import com.android.launcher3.graphics.IconPalette;
import com.android.launcher3.graphics.IconShape;
import com.android.launcher3.graphics.PreloadIconDrawable;
import com.android.launcher3.icons.DotRenderer;
import com.android.launcher3.icons.FastBitmapDrawable;
import com.android.launcher3.icons.IconCache.ItemInfoUpdateReceiver;
import com.android.launcher3.icons.PlaceHolderIconDrawable;
import com.android.launcher3.icons.cache.HandlerRunnable;
import com.android.launcher3.model.data.AppInfo;
import com.android.launcher3.model.data.ItemInfo;
import com.android.launcher3.model.data.ItemInfoWithIcon;
import com.android.launcher3.model.data.PackageItemInfo;
import com.android.launcher3.model.data.SearchActionItemInfo;
import com.android.launcher3.model.data.WorkspaceItemInfo;
import com.android.launcher3.util.SafeCloseable;
import com.android.launcher3.views.ActivityContext;
import com.android.launcher3.views.IconLabelDotView;
import androidx.core.content.ContextCompat;
import android.content.SharedPreferences;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.Bitmap;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.text.NumberFormat;
/**
* TextView that draws a bubble behind the text. We cannot use a LineBackgroundSpan
* because we want to make the bubble taller than the text and TextView's clip is
* too aggressive.
*/
public class BubbleTextView extends TextView implements ItemInfoUpdateReceiver,
IconLabelDotView, DraggableView, Reorderable {
private SharedPreferences sharedPreferences;
private FastBitmapDrawable iconDrawable;
// Get the map corresponding to the entire application name and icon
private Map<String,Drawable> pkgAndIcon=getDrawableRes();
private static final int DISPLAY_WORKSPACE = 0;
private static final int DISPLAY_ALL_APPS = 1;
private static final int DISPLAY_FOLDER = 2;
protected static final int DISPLAY_TASKBAR = 5;
private static final int DISPLAY_SEARCH_RESULT = 6;
private static final int DISPLAY_SEARCH_RESULT_SMALL = 7;
private static final int[] STATE_PRESSED = new int[]{android.R.attr.state_pressed};
private static final float HIGHLIGHT_SCALE = 1.16f;
private final PointF mTranslationForReorderBounce = new PointF(0, 0);
private final PointF mTranslationForReorderPreview = new PointF(0, 0);
private float mScaleForReorderBounce = 1f;
private static final Property<BubbleTextView, Float> DOT_SCALE_PROPERTY
= new Property<BubbleTextView, Float>(Float.TYPE, "dotScale") {
@Override
public Float get(BubbleTextView bubbleTextView) {
return bubbleTextView.mDotParams.scale;
}
@Override
public void set(BubbleTextView bubbleTextView, Float value) {
bubbleTextView.mDotParams.scale = value;
bubbleTextView.invalidate();
}
};
public static final Property<BubbleTextView, Float> TEXT_ALPHA_PROPERTY
= new Property<BubbleTextView, Float>(Float.class, "textAlpha") {
@Override
public Float get(BubbleTextView bubbleTextView) {
return bubbleTextView.mTextAlpha;
}
@Override
public void set(BubbleTextView bubbleTextView, Float alpha) {
bubbleTextView.setTextAlpha(alpha);
}
};
private final ActivityContext mActivity;
private FastBitmapDrawable mIcon;
private boolean mCenterVertically;
protected final int mDisplay;
private final CheckLongPressHelper mLongPressHelper;
private final boolean mLayoutHorizontal;
private final int mIconSize;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mIsIconVisible = true;
@ViewDebug.ExportedProperty(category = "launcher")
private int mTextColor;
@ViewDebug.ExportedProperty(category = "launcher")
private float mTextAlpha = 1;
@ViewDebug.ExportedProperty(category = "launcher")
private DotInfo mDotInfo;
private DotRenderer mDotRenderer;
@ViewDebug.ExportedProperty(category = "launcher", deepExport = true)
protected DotRenderer.DrawParams mDotParams;
private Animator mDotScaleAnim;
private boolean mForceHideDot;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mStayPressed;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mIgnorePressedStateChange;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mDisableRelayout = false;
private HandlerRunnable mIconLoadRequest;
private boolean mEnableIconUpdateAnimation = false;
public BubbleTextView(Context context) {
this(context, null, 0);
}
public BubbleTextView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public BubbleTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mActivity = ActivityContext.lookupContext(context);
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.BubbleTextView, defStyle, 0);
mLayoutHorizontal = a.getBoolean(R.styleable.BubbleTextView_layoutHorizontal, false);
DeviceProfile grid = mActivity.getDeviceProfile();
mDisplay = a.getInteger(R.styleable.BubbleTextView_iconDisplay, DISPLAY_WORKSPACE);
final int defaultIconSize;
if (mDisplay == DISPLAY_WORKSPACE) {
setTextSize(TypedValue.COMPLEX_UNIT_PX, grid.iconTextSizePx);
setCompoundDrawablePadding(grid.iconDrawablePaddingPx);
defaultIconSize = grid.iconSizePx;
setCenterVertically(grid.isScalableGrid);
} else if (mDisplay == DISPLAY_ALL_APPS) {
setTextSize(TypedValue.COMPLEX_UNIT_PX, grid.allAppsIconTextSizePx);
setCompoundDrawablePadding(grid.allAppsIconDrawablePaddingPx);
defaultIconSize = grid.allAppsIconSizePx;
} else if (mDisplay == DISPLAY_FOLDER) {
setTextSize(TypedValue.COMPLEX_UNIT_PX, grid.folderChildTextSizePx);
setCompoundDrawablePadding(grid.folderChildDrawablePaddingPx);
defaultIconSize = grid.folderChildIconSizePx;
} else if (mDisplay == DISPLAY_SEARCH_RESULT) {
defaultIconSize = getResources().getDimensionPixelSize(R.dimen.search_row_icon_size);
} else if (mDisplay == DISPLAY_SEARCH_RESULT_SMALL) {
defaultIconSize = getResources().getDimensionPixelSize(
R.dimen.search_row_small_icon_size);
} else if (mDisplay == DISPLAY_TASKBAR) {
defaultIconSize = grid.iconSizePx;
} else {
// widget_selection or shortcut_popup
defaultIconSize = grid.iconSizePx;
}
mCenterVertically = a.getBoolean(R.styleable.BubbleTextView_centerVertically, false);
mIconSize = a.getDimensionPixelSize(R.styleable.BubbleTextView_iconSizeOverride,
defaultIconSize);
a.recycle();
mLongPressHelper = new CheckLongPressHelper(this);
mDotParams = new DotRenderer.DrawParams();
setEllipsize(TruncateAt.END);
setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
setTextAlpha(1f);
}
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
// Disable marques when not focused to that, so that updating text does not cause relayout.
setEllipsize(focused ? TruncateAt.MARQUEE : TruncateAt.END);
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
/**
* Resets the view so it can be recycled.
*/
public void reset() {
mDotInfo = null;
mDotParams.color = Color.TRANSPARENT;
cancelDotScaleAnim();
mDotParams.scale = 0f;
mForceHideDot = false;
setBackground(null);
}
private void cancelDotScaleAnim() {
if (mDotScaleAnim != null) {
mDotScaleAnim.cancel();
}
}
private void animateDotScale(float... dotScales) {
cancelDotScaleAnim();
mDotScaleAnim = ObjectAnimator.ofFloat(this, DOT_SCALE_PROPERTY, dotScales);
mDotScaleAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mDotScaleAnim = null;
}
});
mDotScaleAnim.start();
}
@UiThread
public void applyFromWorkspaceItem(WorkspaceItemInfo info) {
applyFromWorkspaceItem(info, false);
}
@Override
public void setAccessibilityDelegate(AccessibilityDelegate delegate) {
if (delegate instanceof LauncherAccessibilityDelegate) {
super.setAccessibilityDelegate(delegate);
} else {
// NO-OP
// Workaround for b/129745295 where RecyclerView is setting our Accessibility
// delegate incorrectly. There are no cases when we shouldn't be using the
// LauncherAccessibilityDelegate for BubbleTextView.
}
}
@UiThread
public void applyFromWorkspaceItem(WorkspaceItemInfo info, boolean promiseStateChanged) {
applyIconAndLabel(info);
setTag(info);
applyLoadingState(promiseStateChanged);
applyDotState(info, false /* animate */);
setDownloadStateContentDescription(info, info.getProgressLevel());
}
@UiThread
public void applyFromApplicationInfo(AppInfo info) {
applyIconAndLabel(info);
// We don't need to check the info since it's not a WorkspaceItemInfo
super.setTag(info);
// Verify high res immediately
verifyHighRes();
if ((info.runtimeStatusFlags & ItemInfoWithIcon.FLAG_SHOW_DOWNLOAD_PROGRESS_MASK) != 0) {
applyProgressLevel();
}
applyDotState(info, false /* animate */);
setDownloadStateContentDescription(info, info.getProgressLevel());
}
/**
* Apply label and tag using a generic {@link ItemInfoWithIcon}
*/
@UiThread
public void applyFromItemInfoWithIcon(ItemInfoWithIcon info) {
applyIconAndLabel(info);
// We don't need to check the info since it's not a WorkspaceItemInfo
super.setTag(info);
// Verify high res immediately
verifyHighRes();
setDownloadStateContentDescription(info, info.getProgressLevel());
}
/**
* Apply label and tag using a {@link SearchActionItemInfo}
*/
@UiThread
public void applyFromSearchActionItemInfo(SearchActionItemInfo searchActionItemInfo) {
applyIconAndLabel(searchActionItemInfo);
setTag(searchActionItemInfo);
}
@UiThread
protected void applyIconAndLabel(ItemInfoWithIcon info) {
boolean useTheme = mDisplay == DISPLAY_WORKSPACE || mDisplay == DISPLAY_FOLDER;
// FastBitmapDrawable iconDrawable = info.newIcon(getContext(), useTheme);
sharedPreferences=getContext().getSharedPreferences("theme_index_name",Context.MODE_PRIVATE);
int a = sharedPreferences.getInt("theme_index",-1);
String[] appPackageAndClassName = getContext().getResources().getStringArray(R.array.change_icon_package_name);
if (a==-1 || a==3){
iconDrawable = info.newIcon(getContext(), useTheme);
}else{
changThemeOfIcon(appPackageAndClassName,info,useTheme);
}
mDotParams.color = IconPalette.getMutedColor(iconDrawable.getIconColor(), 0.54f);
setIcon(iconDrawable);
applyLabel(info);
}
private void changThemeOfIcon(String[] appPackageAndClassName,ItemInfoWithIcon info,boolean useTheme){
Drawable drawable = pkgAndIcon.get(info.getTargetPackage().toString());
if (drawable!=null){
BitmapDrawable bd = (BitmapDrawable) drawable;
Bitmap bitmap = bd.getBitmap();
iconDrawable = new FastBitmapDrawable(bitmap);
}else{
iconDrawable = info.newIcon(getContext(), useTheme);
}
}
private Map<String,Drawable> getDrawableRes(){
ArrayList<Drawable> drawables=new ArrayList<>();
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_dialer));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_messaging));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_maps));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_chrome));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_gmail));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_photo));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_calculator));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_calendar));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.android_settings));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_clock));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_contacts));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_files));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_docs));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.android_fmradio));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_app_assistant));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_video));
drawables.add(ContextCompat.getDrawable(getContext(), R.mipmap.google_youtube));
String[] appPackageAndClassName = getContext().getResources().getStringArray(R.array.change_icon_package_name);
Map<String,Drawable> pkgAndIcon=new HashMap<String,Drawable>();
for (int i = 0; i < appPackageAndClassName.length; i++) {
pkgAndIcon.put(appPackageAndClassName[i],drawables.get(i));
}
return pkgAndIcon;
}
@UiThread
private void applyLabel(ItemInfoWithIcon info) {
setText(info.title);
if (info.contentDescription != null) {
setContentDescription(info.isDisabled()
? getContext().getString(R.string.disabled_app_label, info.contentDescription)
: info.contentDescription);
}
}
/**
* Overrides the default long press timeout.
*/
public void setLongPressTimeoutFactor(float longPressTimeoutFactor) {
mLongPressHelper.setLongPressTimeoutFactor(longPressTimeoutFactor);
}
@Override
public void refreshDrawableState() {
if (!mIgnorePressedStateChange) {
super.refreshDrawableState();
}
}
@Override
protected int[] onCreateDrawableState(int extraSpace) {
final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
if (mStayPressed) {
mergeDrawableStates(drawableState, STATE_PRESSED);
}
return drawableState;
}
/** Returns the icon for this view. */
public FastBitmapDrawable getIcon() {
return mIcon;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// ignore events if they happen in padding area
if (event.getAction() == MotionEvent.ACTION_DOWN
&& shouldIgnoreTouchDown(event.getX(), event.getY())) {
return false;
}
if (isLongClickable()) {
super.onTouchEvent(event);
mLongPressHelper.onTouchEvent(event);
// Keep receiving the rest of the events
return true;
} else {
return super.onTouchEvent(event);
}
}
/**
* Returns true if the touch down at the provided position be ignored
*/
protected boolean shouldIgnoreTouchDown(float x, float y) {
return y < getPaddingTop()
|| x < getPaddingLeft()
|| y > getHeight() - getPaddingBottom()
|| x > getWidth() - getPaddingRight();
}
void setStayPressed(boolean stayPressed) {
mStayPressed = stayPressed;
refreshDrawableState();
}
@Override
public void onVisibilityAggregated(boolean isVisible) {
super.onVisibilityAggregated(isVisible);
if (mIcon != null) {
mIcon.setVisible(isVisible, false);
}
}
void clearPressedBackground() {
setPressed(false);
setStayPressed(false);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
// Unlike touch events, keypress event propagate pressed state change immediately,
// without waiting for onClickHandler to execute. Disable pressed state changes here
// to avoid flickering.
mIgnorePressedStateChange = true;
boolean result = super.onKeyUp(keyCode, event);
mIgnorePressedStateChange = false;
refreshDrawableState();
return result;
}
@SuppressWarnings("wrongcall")
protected void drawWithoutDot(Canvas canvas) {
super.onDraw(canvas);
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
drawDotIfNecessary(canvas);
}
/**
* Draws the notification dot in the top right corner of the icon bounds.
*
* @param canvas The canvas to draw to.
*/
protected void drawDotIfNecessary(Canvas canvas) {
if (!mForceHideDot && (hasDot() || mDotParams.scale > 0)) {
getIconBounds(mDotParams.iconBounds);
Utilities.scaleRectAboutCenter(mDotParams.iconBounds,
IconShape.getNormalizationScale());
final int scrollX = getScrollX();
final int scrollY = getScrollY();
canvas.translate(scrollX, scrollY);
mDotRenderer.draw(canvas, mDotParams);
canvas.translate(-scrollX, -scrollY);
}
}
@Override
public void setForceHideDot(boolean forceHideDot) {
if (mForceHideDot == forceHideDot) {
return;
}
mForceHideDot = forceHideDot;
if (forceHideDot) {
invalidate();
} else if (hasDot()) {
animateDotScale(0, 1);
}
}
private boolean hasDot() {
return mDotInfo != null;
}
public void getIconBounds(Rect outBounds) {
getIconBounds(this, outBounds, mIconSize);
}
public static void getIconBounds(View iconView, Rect outBounds, int iconSize) {
int top = iconView.getPaddingTop();
int left = (iconView.getWidth() - iconSize) / 2;
int right = left + iconSize;
int bottom = top + iconSize;
outBounds.set(left, top, right, bottom);
}
/**
* Sets whether to vertically center the content.
*/
public void setCenterVertically(boolean centerVertically) {
mCenterVertically = centerVertically;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mCenterVertically) {
Paint.FontMetrics fm = getPaint().getFontMetrics();
int cellHeightPx = mIconSize + getCompoundDrawablePadding() +
(int) Math.ceil(fm.bottom - fm.top);
int height = MeasureSpec.getSize(heightMeasureSpec);
setPadding(getPaddingLeft(), (height - cellHeightPx) / 2, getPaddingRight(),
getPaddingBottom());
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
@Override
public void setTextColor(int color) {
mTextColor = color;
super.setTextColor(getModifiedColor());
}
@Override
public void setTextColor(ColorStateList colors) {
mTextColor = colors.getDefaultColor();
if (Float.compare(mTextAlpha, 1) == 0) {
super.setTextColor(colors);
} else {
super.setTextColor(getModifiedColor());
}
}
public boolean shouldTextBeVisible() {
// Text should be visible everywhere but the hotseat.
Object tag = getParent() instanceof FolderIcon ? ((View) getParent()).getTag() : getTag();
ItemInfo info = tag instanceof ItemInfo ? (ItemInfo) tag : null;
return info == null || (info.container != LauncherSettings.Favorites.CONTAINER_HOTSEAT
&& info.container != LauncherSettings.Favorites.CONTAINER_HOTSEAT_PREDICTION);
}
public void setTextVisibility(boolean visible) {
setTextAlpha(visible ? 1 : 0);
}
private void setTextAlpha(float alpha) {
mTextAlpha = alpha;
super.setTextColor(getModifiedColor());
}
private int getModifiedColor() {
if (mTextAlpha == 0) {
// Special case to prevent text shadows in high contrast mode
return Color.TRANSPARENT;
}
return setColorAlphaBound(mTextColor, Math.round(Color.alpha(mTextColor) * mTextAlpha));
}
/**
* Creates an animator to fade the text in or out.
*
* @param fadeIn Whether the text should fade in or fade out.
*/
public ObjectAnimator createTextAlphaAnimator(boolean fadeIn) {
float toAlpha = shouldTextBeVisible() && fadeIn ? 1 : 0;
return ObjectAnimator.ofFloat(this, TEXT_ALPHA_PROPERTY, toAlpha);
}
@Override
public void cancelLongPress() {
super.cancelLongPress();
mLongPressHelper.cancelLongPress();
}
/**
* Applies the loading progress value to the progress bar.
*
* If this app is installing, the progress bar will be updated with the installation progress.
* If this app is installed and downloading incrementally, the progress bar will be updated
* with the total download progress.
*/
public void applyLoadingState(boolean promiseStateChanged) {
if (getTag() instanceof ItemInfoWithIcon) {
WorkspaceItemInfo info = (WorkspaceItemInfo) getTag();
if ((info.runtimeStatusFlags & ItemInfoWithIcon.FLAG_INCREMENTAL_DOWNLOAD_ACTIVE)
!= 0) {
updateProgressBarUi(info.getProgressLevel() == 100);
} else if (info.hasPromiseIconUi() || (info.runtimeStatusFlags
& ItemInfoWithIcon.FLAG_INSTALL_SESSION_ACTIVE) != 0) {
updateProgressBarUi(promiseStateChanged);
}
}
}
private void updateProgressBarUi(boolean maybePerformFinishedAnimation) {
PreloadIconDrawable preloadDrawable = applyProgressLevel();
if (preloadDrawable != null && maybePerformFinishedAnimation) {
preloadDrawable.maybePerformFinishedAnimation();
}
}
/** Applies the given progress level to the this icon's progress bar. */
@Nullable
public PreloadIconDrawable applyProgressLevel() {
if (!(getTag() instanceof ItemInfoWithIcon)) {
return null;
}
ItemInfoWithIcon info = (ItemInfoWithIcon) getTag();
int progressLevel = info.getProgressLevel();
if (progressLevel >= 100) {
setContentDescription(info.contentDescription != null
? info.contentDescription : "");
} else if (progressLevel > 0) {
setDownloadStateContentDescription(info, progressLevel);
} else {
setContentDescription(getContext()
.getString(R.string.app_waiting_download_title, info.title));
}
if (mIcon != null) {
PreloadIconDrawable preloadIconDrawable;
if (mIcon instanceof PreloadIconDrawable) {
preloadIconDrawable = (PreloadIconDrawable) mIcon;
preloadIconDrawable.setLevel(progressLevel);
preloadIconDrawable.setIsDisabled(!info.isAppStartable());
} else {
preloadIconDrawable = makePreloadIcon();
setIcon(preloadIconDrawable);
}
return preloadIconDrawable;
}
return null;
}
/**
* Creates a PreloadIconDrawable with the appropriate progress level without mutating this
* object.
*/
@Nullable
public PreloadIconDrawable makePreloadIcon() {
if (!(getTag() instanceof ItemInfoWithIcon)) {
return null;
}
ItemInfoWithIcon info = (ItemInfoWithIcon) getTag();
int progressLevel = info.getProgressLevel();
final PreloadIconDrawable preloadDrawable = newPendingIcon(getContext(), info);
preloadDrawable.setLevel(progressLevel);
preloadDrawable.setIsDisabled(!info.isAppStartable());
return preloadDrawable;
}
public void applyDotState(ItemInfo itemInfo, boolean animate) {
if (mIcon instanceof FastBitmapDrawable) {
boolean wasDotted = mDotInfo != null;
mDotInfo = mActivity.getDotInfoForItem(itemInfo);
boolean isDotted = mDotInfo != null;
float newDotScale = isDotted ? 1f : 0;
if (mDisplay == DISPLAY_ALL_APPS) {
mDotRenderer = mActivity.getDeviceProfile().mDotRendererAllApps;
} else {
mDotRenderer = mActivity.getDeviceProfile().mDotRendererWorkSpace;
}
if (wasDotted || isDotted) {
// Animate when a dot is first added or when it is removed.
if (animate && (wasDotted ^ isDotted) && isShown()) {
animateDotScale(newDotScale);
} else {
cancelDotScaleAnim();
mDotParams.scale = newDotScale;
invalidate();
}
}
if (itemInfo.contentDescription != null) {
if (itemInfo.isDisabled()) {
setContentDescription(getContext().getString(R.string.disabled_app_label,
itemInfo.contentDescription));
} else if (hasDot()) {
int count = mDotInfo.getNotificationCount();
setContentDescription(getContext().getResources().getQuantityString(
R.plurals.dotted_app_label, count, itemInfo.contentDescription, count));
} else {
setContentDescription(itemInfo.contentDescription);
}
}
}
}
private void setDownloadStateContentDescription(ItemInfoWithIcon info, int progressLevel) {
if ((info.runtimeStatusFlags & ItemInfoWithIcon.FLAG_SHOW_DOWNLOAD_PROGRESS_MASK)
!= 0) {
String percentageString = NumberFormat.getPercentInstance()
.format(progressLevel * 0.01);
if ((info.runtimeStatusFlags & ItemInfoWithIcon.FLAG_INSTALL_SESSION_ACTIVE) != 0) {
setContentDescription(getContext()
.getString(
R.string.app_installing_title, info.title, percentageString));
} else if ((info.runtimeStatusFlags
& ItemInfoWithIcon.FLAG_INCREMENTAL_DOWNLOAD_ACTIVE) != 0) {
setContentDescription(getContext()
.getString(
R.string.app_downloading_title, info.title, percentageString));
}
}
}
/**
* Sets the icon for this view based on the layout direction.
*/
protected void setIcon(FastBitmapDrawable icon) {
if (mIsIconVisible) {
applyCompoundDrawables(icon);
}
mIcon = icon;
if (mIcon != null) {
mIcon.setVisible(getWindowVisibility() == VISIBLE && isShown(), false);
}
}
@Override
public void setIconVisible(boolean visible) {
mIsIconVisible = visible;
if (!mIsIconVisible) {
resetIconScale();
}
Drawable icon = visible ? mIcon : new ColorDrawable(Color.TRANSPARENT);
applyCompoundDrawables(icon);
}
protected boolean iconUpdateAnimationEnabled() {
return mEnableIconUpdateAnimation;
}
protected void applyCompoundDrawables(Drawable icon) {
// If we had already set an icon before, disable relayout as the icon size is the
// same as before.
mDisableRelayout = mIcon != null;
icon.setBounds(0, 0, mIconSize, mIconSize);
updateIcon(icon);
// If the current icon is a placeholder color, animate its update.
if (mIcon != null
&& mIcon instanceof PlaceHolderIconDrawable
&& iconUpdateAnimationEnabled()) {
((PlaceHolderIconDrawable) mIcon).animateIconUpdate(icon);
}
mDisableRelayout = false;
}
@Override
public void requestLayout() {
if (!mDisableRelayout) {
super.requestLayout();
}
}
/**
* Applies the item info if it is same as what the view is pointing to currently.
*/
@Override
public void reapplyItemInfo(ItemInfoWithIcon info) {
if (getTag() == info) {
mIconLoadRequest = null;
mDisableRelayout = true;
mEnableIconUpdateAnimation = true;
// Optimization: Starting in N, pre-uploads the bitmap to RenderThread.
info.bitmap.icon.prepareToDraw();
if (info instanceof AppInfo) {
applyFromApplicationInfo((AppInfo) info);
} else if (info instanceof WorkspaceItemInfo) {
applyFromWorkspaceItem((WorkspaceItemInfo) info);
mActivity.invalidateParent(info);
} else if (info instanceof PackageItemInfo) {
applyFromItemInfoWithIcon((PackageItemInfo) info);
} else if (info instanceof SearchActionItemInfo) {
applyFromSearchActionItemInfo((SearchActionItemInfo) info);
}
mDisableRelayout = false;
mEnableIconUpdateAnimation = false;
}
}
/**
* Verifies that the current icon is high-res otherwise posts a request to load the icon.
*/
public void verifyHighRes() {
if (mIconLoadRequest != null) {
mIconLoadRequest.cancel();
mIconLoadRequest = null;
}
if (getTag() instanceof ItemInfoWithIcon) {
ItemInfoWithIcon info = (ItemInfoWithIcon) getTag();
if (info.usingLowResIcon()) {
mIconLoadRequest = LauncherAppState.getInstance(getContext()).getIconCache()
.updateIconInBackground(BubbleTextView.this, info);
}
}
}
public int getIconSize() {
return mIconSize;
}
private void updateTranslation() {
super.setTranslationX(mTranslationForReorderBounce.x + mTranslationForReorderPreview.x);
super.setTranslationY(mTranslationForReorderBounce.y + mTranslationForReorderPreview.y);
}
public void setReorderBounceOffset(float x, float y) {
mTranslationForReorderBounce.set(x, y);
updateTranslation();
}
public void getReorderBounceOffset(PointF offset) {
offset.set(mTranslationForReorderBounce);
}
@Override
public void setReorderPreviewOffset(float x, float y) {
mTranslationForReorderPreview.set(x, y);
updateTranslation();
}
@Override
public void getReorderPreviewOffset(PointF offset) {
offset.set(mTranslationForReorderPreview);
}
public void setReorderBounceScale(float scale) {
mScaleForReorderBounce = scale;
super.setScaleX(scale);
super.setScaleY(scale);
}
public float getReorderBounceScale() {
return mScaleForReorderBounce;
}
public View getView() {
return this;
}
@Override
public int getViewType() {
return DRAGGABLE_ICON;
}
@Override
public void getWorkspaceVisualDragBounds(Rect bounds) {
DeviceProfile grid = mActivity.getDeviceProfile();
BubbleTextView.getIconBounds(this, bounds, grid.iconSizePx);
}
private int getIconSizeForDisplay(int display) {
DeviceProfile grid = mActivity.getDeviceProfile();
switch (display) {
case DISPLAY_ALL_APPS:
return grid.allAppsIconSizePx;
case DISPLAY_WORKSPACE:
case DISPLAY_FOLDER:
default:
return grid.iconSizePx;
}
}
public void getSourceVisualDragBounds(Rect bounds) {
BubbleTextView.getIconBounds(this, bounds, getIconSizeForDisplay(mDisplay));
}
@Override
public SafeCloseable prepareDrawDragView() {
resetIconScale();
setForceHideDot(true);
return () -> { };
}
private void resetIconScale() {
if (mIcon instanceof FastBitmapDrawable) {
((FastBitmapDrawable) mIcon).resetScale();
}
}
private void updateIcon(Drawable newIcon) {
if (mLayoutHorizontal) {
setCompoundDrawablesRelative(newIcon, null, null, null);
} else {
setCompoundDrawables(null, newIcon, null, null);
}
}
}
2.9、更改桌面壁纸
Android中的壁纸分为静态壁纸和动态壁纸， 这两类壁纸本质都是一样的， 都是通过继承WallpaperService来实现的，只不过是绘制方面的差异。WallpaperManagerService用于管理壁纸的运行与切换，
并通过WallpaperManager类向外界提供操作壁纸的接口，主要体现了对壁纸的管理方式。WallpaperService则对应壁纸的具体实现，实现壁纸服务相关的核心是WallpaperService中的Engine类。
所以声明WallpaperManager对象，获取到WallpaperManagerService，调用setResource方法就可以实现壁纸的更换。
private WallpaperManager wallpaperManager;
wallpaperManager = (WallpaperManager) getSystemService(mContext.WALLPAPER_SERVICE);
wallpapaerManager.se
最后
以上就是醉熏大树为你收集整理的Launcher中修改桌面壁纸、锁屏壁纸和手机图标Launcher中增加主题的更换（图标、壁纸和锁屏壁纸）–2的全部内容，希望文章能够帮你解决Launcher中修改桌面壁纸、锁屏壁纸和手机图标Launcher中增加主题的更换（图标、壁纸和锁屏壁纸）–2所遇到的程序开发问题。
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