任务一——————打招呼

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="103dp"
        android:ems="10"
        android:inputType="textPersonName" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/editText1"
        android:layout_alignLeft="@+id/editText1"
        android:layout_marginLeft="25dp"
        android:drawableLeft="@drawable/name"
        android:ems="10"
        android:background="@android:drawable/edit_text"
        android:inputType="textPersonName" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:background="null"
        android:drawableLeft="@drawable/btn_bg"
        android:layout_centerVertical="true"/>

</RelativeLayout>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
/* AUTO-GENERATED FILE.  DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * aapt tool from the resource data it found.  It
 * should not be modified by hand.
 */

package com.example.helloliuandroid;

public final class R {
    public static final class attr {
    }
    public static final class dimen {
        /**  Default screen margins, per the Android Design guidelines. 

         Customize dimensions originally defined in res/values/dimens.xml (such as
         screen margins) for sw720dp devices (e.g. 10" tablets) in landscape here.
    
         */
        public static final int activity_horizontal_margin=0x7f040000;
        public static final int activity_vertical_margin=0x7f040001;
    }
    public static final class drawable {
        public static final int bg=0x7f020000;
        public static final int btn_bg=0x7f020001;
        public static final int ic_launcher=0x7f020002;
        public static final int name=0x7f020003;
        public static final int ok=0x7f020004;
        public static final int smile=0x7f020005;
        public static final int smile_blak=0x7f020006;
        public static final int user_name=0x7f020007;
    }
    public static final class id {
        public static final int action_settings=0x7f080001;
        public static final int editText1=0x7f080000;
    }
    public static final class layout {
        public static final int activity_main=0x7f030000;
    }
    public static final class menu {
        public static final int main=0x7f070000;
    }
    public static final class string {
        public static final int action_settings=0x7f050001;
        public static final int app_name=0x7f050000;
        public static final int hello_world=0x7f050002;
    }
    public static final class style {
        /** 
        Base application theme, dependent on API level. This theme is replaced
        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
    

            Theme customizations available in newer API levels can go in
            res/values-vXX/styles.xml, while customizations related to
            backward-compatibility can go here.
        

        Base application theme for API 11+. This theme completely replaces
        AppBaseTheme from res/values/styles.xml on API 11+ devices.
    
 API 11 theme customizations can go here. 

        Base application theme for API 14+. This theme completely replaces
        AppBaseTheme from BOTH res/values/styles.xml and
        res/values-v11/styles.xml on API 14+ devices.
    
 API 14 theme customizations can go here. 
         */
        public static final int AppBaseTheme=0x7f060000;
        /**  Application theme. 
 All customizations that are NOT specific to a particular API-level can go here. 
         */
        public static final int AppTheme=0x7f060001;
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
package com.example.helloliuandroid;

import com.example.sencondandroid.R.drawable;  

import android.app.Activity;  
import android.graphics.Color;  
import android.os.Bundle;  
import android.support.v4.widget.DrawerLayout;  
import android.view.DragEvent;  
import android.view.Gravity;  
import android.view.Menu;  
import android.view.MenuItem;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.EditText;  
import android.widget.ImageView;  
import android.widget.LinearLayout;  
import android.widget.TextView;  
import android.widget.Toast;  
public class MainActivity extends Activity {

    
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		button =(Button) findViewById(R.id.button1);  
        edittext = (EditText) findViewById(R.id.ET_Name);  
        button.setOnClickListener(new OnClickListener() {  
              
            @Override  
            public void onClick(View v) {  
                String inputText = edittext.getText().toString();  
                  
                Toast toast = new Toast(MainActivity.this);    
                toast.setGravity(Gravity.CENTER, 0, 120);    
                ImageView image = new ImageView(MainActivity.this);    
                image.setImageResource(R.drawable.smile);    
                LinearLayout ll = new LinearLayout(MainActivity.this);    
                // 向LinearLayout中添加图片、原有的View    
                ll.addView(image);    
                // 创建一个ImageView    
                TextView textView = new TextView(MainActivity.this);    
                textView.setText("hello"+inputText);    
                // 设置文本框内字体的大小和颜色    
                textView.setTextSize(30);    
                textView.setTextColor(Color.MAGENTA);    
                ll.addView(textView);    
                // 设置Toast显示自定义View                 
                toast.setView(ll);    
                // 设置Toast的显示时间    
                toast.setDuration(Toast.LENGTH_LONG);    
                toast.show();    
            }  
        });  

	}

	
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}


@Override  
public boolean onOptionsItemSelected(MenuItem item) {  
   
    int id = item.getItemId();  
    if (id == R.id.action_settings) {  
        return true;  
    }  
    return super.onOptionsItemSelected(item);  
}  
}