【快速使用】解决USB权限弹窗——无障碍一、简介二、使用初始设置注意事项

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我是靠谱客的博主唠叨向日葵，最近开发中收集的这篇文章主要介绍【快速使用】解决USB权限弹窗——无障碍一、简介二、使用初始设置注意事项，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

一、简介

别人的设备与系统，自己无能力修改源码，只能寻求其他手段，在网上看到有人说道“无障碍”，便开始试一试，发现是可行的，比adb好用多了；

二、使用

新建类 MyAccessibilityService

public class MyAccessibilityService extends AccessibilityService {
String TAG = "AliAccessibilityService";
/**
* event: EventType: TYPE_WINDOW_STATE_CHANGED;
* EventTime: 382223;
* PackageName: com.android.systemui;
* MovementGranularity: 0;
* Action: 0;
* ContentChangeTypes: [];
* WindowChangeTypes: [] [
* ClassName: android.app.Dialog;
* Text: [YSY200506-1SW, 要允许YSY200506-1SW访问USB Serial Converter吗？, 连接USB Serial Converter后一律打开YSY200506-1SW, 取消, 确定];
* ContentDescription: null;
* ItemCount: -1;
* CurrentItemIndex: -1;
* Enabled: true;
* Password: false;
* Checked: false;
* FullScreen: false;
* Scrollable: false;
* BeforeText: null;
* FromIndex: -1;
* ToIndex: -1;
* ScrollX: -1;
* ScrollY: -1;
* MaxScrollX: -1;
* MaxScrollY: -1;
* AddedCount: -1;
* RemovedCount: -1;
* ParcelableData: null ];
* recordCount: 0
*
* @param event AccessibilityEvent
*/
//接收到系统发送AccessibilityEvent时的回调
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
if (event.getPackageName().equals("com.android.systemui") && event.getClassName().equals("android.app.Dialog") && event.getText().get(0).equals(getAppName(getApplicationContext()))) {
AccessibilityNodeInfo nodeInfo = event.getSource();
for (int i = 0; i < nodeInfo.getChildCount(); i++) {
if (nodeInfo.getChild(i).getClassName().equals("android.widget.CheckBox")) {
Log.d(TAG, "onAccessibilityEvent: " + nodeInfo.getChild(i).getClassName() + ": " + nodeInfo.getChild(i).getText());
nodeInfo.getChild(i).performAction(AccessibilityNodeInfo.ACTION_CLICK);
}
}
for (int i = 0; i < nodeInfo.getChildCount(); i++) {
if (nodeInfo.getChild(i).getClassName().equals("android.widget.ScrollView")) {
for (int j = 0; j < nodeInfo.getChild(i).getChildCount(); j++) {
if (nodeInfo.getChild(i).getChild(j).getClassName().equals("android.widget.Button") && nodeInfo.getChild(i).getChild(j).getText().equals("确定")) {
Log.d(TAG, "onAccessibilityEvent: " + nodeInfo.getChild(i).getChild(j).getClassName() + ": " + nodeInfo.getChild(i).getChild(j).getText());
nodeInfo.getChild(i).getChild(j).performAction(AccessibilityNodeInfo.ACTION_CLICK);
return;
}
}
}
}
}
}
//服务中断时的回调
@Override
public void onInterrupt() {
Log.d(TAG, "onInterrupt");
}
/**
* 获取应用程序名称
*/
public static String getAppName(Context context) {
try {
PackageManager packageManager = context.getPackageManager();
PackageInfo packageInfo = packageManager.getPackageInfo(
context.getPackageName(), 0);
int labelRes = packageInfo.applicationInfo.labelRes;
return context.getResources().getString(labelRes);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}

声明service，并在res下创建xml，然后再xml下创建accessibility_service文件，具体参数说明可以自行搜索，这里不过多赘述

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ysy200506_1sw">
... ...
<application
... ...
<service
android:name=".MyAccessibilityService"
android:label="USB读取自动授权"
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
<intent-filter>
<action android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
<meta-data
android:name="android.accessibilityservice"
android:resource="@xml/accessibility_service" />
</service>
</application>
</manifest>

<accessibility-service
xmlns:android="http://schemas.android.com/apk/res/android"
android:accessibilityEventTypes="typeWindowStateChanged"
android:accessibilityFeedbackType="feedbackGeneric"
android:canRetrieveWindowContent="true"
android:description="@string/app_name"
android:notificationTimeout="100"/>