ButtonUI

 1 package com.example.a07_button;
 2  
 3 import com.example.a07_button.MainActivity.onclickli;
 4  
 5 import android.content.Context;
 6 import android.view.View;
 7 import android.view.View.OnClickListener;
 8 import android.widget.Toast;
 9  
10 public class outclick implements OnClickListener {
11  /**
12   * Context（上下文对象）：他只有在activity里面有这个对象
13   */
14  private Context context;
15  
16  public outclick(Context context) {
17   //使用构造器进行传递context 赋值给我们的属性并声明全局，以供给我们的onclick方法使用
18   this.context = context;
19  }
20  
21  @Override
22  public void onClick(View v) {
23   Toast.makeText(context, "当前为外部类", 1).show();
24  }
25  
26 }

 1 package com.example.a07_button;
 2  
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.view.View.OnClickListener;
 7 import android.widget.ImageButton;
 8  
 9 public class SecondImageButton extends Activity {
10  private ImageButton ib2;
11  private boolean flag = true;
12  
13  @Override
14  protected void onCreate(Bundle savedInstanceState) {
15   // TODO Auto-generated method stub
16   super.onCreate(savedInstanceState);
17   setContentView(R.layout.activity_second);
18   /**
19    * 当我们设置为src时 android:src="@drawable/nvjing" 改变图片用的是
20    *
21    * ib2.setImageResource(R.drawable.hanbing); 当我们设置为background
22    */
23   ib2 = (ImageButton) findViewById(R.id.ib);
24   ib2.setOnClickListener(new OnClickListener() {
25  
26    @Override
27    public void onClick(View v) {
28     if (flag) {
29      ib2.setBackgroundResource(R.drawable.nvjing);
30      flag = false;
31      // 对应android:background="@drawable/hanbing"
32     } else {
33      ib2.setBackgroundResource(R.drawable.hanbing);// 对应android:background="@drawable/hanbing"
34      flag = true;
35     }
36  
37     // ib2.setImageResource(R.drawable.hanbing);//这是对应src的属性
38  
39    }
40   });
41  }
42 }

 1 package com.example.a07_button;
 2  
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.view.View.OnClickListener;
 7 import android.widget.Button;
 8 import android.widget.ImageView;
 9  
10 public class thirdImageView extends Activity implements OnClickListener {
11  private Button pre, next;
12  private ImageView iv;
13  private int iamges[];
14  private int current;
15  
16  @Override
17  protected void onCreate(Bundle savedInstanceState) {
18   // TODO Auto-generated method stub
19   super.onCreate(savedInstanceState);
20   setContentView(R.layout.activity_third);
21   findbyid();
22   Init();
23  }
24  
25  private void Init() {
26   iamges = new int[] { R.drawable.hanbing, R.drawable.kate,
27     R.drawable.nvjing };
28   // iv.setImageDrawable(getResources().getDrawable(R.drawable.kate));//寻找型
29   iv.setBackgroundResource(R.drawable.kate);// 对应的是第二章图片
30   current = 1;
31  
32  }
33  
34  private void findbyid() {
35   pre = (Button) findViewById(R.id.pre);
36   next = (Button) findViewById(R.id.next);
37   iv = (ImageView) findViewById(R.id.iv);
38   pre.setOnClickListener(this);
39   next.setOnClickListener(this);
40  
41  }
42  
43  @Override
44  public void onClick(View v) {
45   switch (v.getId()) {
46   case R.id.pre:// 上一张
47     current = (current - 1 + iamges.length) % iamges.length;
48  
49    iv.setBackgroundResource(iamges[current]);
50    break;
51   case R.id.next:// 下一张
52     current = (current + 1 + iamges.length) % iamges.length;
53  
54    iv.setBackgroundResource(iamges[current]);
55    break;
56   default:
57    break;
58   }
59  
60  }
61 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.a07_button"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6     <uses-sdk
 7         android:minSdkVersion="10"
 8         android:targetSdkVersion="10" />
 9 
10     <application
11         android:allowBackup="true"
12         android:icon="@drawable/ic_launcher"
13         android:label="@string/app_name"
14         android:theme="@style/AppTheme" >
15         <activity
16             android:name="com.example.a07_button.MainActivity"
17             android:label="@string/app_name" >
18             <intent-filter>
19                 <action android:name="android.intent.action.MAIN" />
20 
21                 <category android:name="android.intent.category.LAUNCHER" />
22             </intent-filter>
23         </activity>
24         <activity android:name="com.example.a07_button.SecondImageButton" >
25         </activity>
26         <activity android:name="com.example.a07_button.thirdImageView" >
27         </activity>
28     </application>
29 </manifest>
30