Android 之ContextMenu上下文菜單

主程序如下：

1. package com.cloay;
3. import Android.app.Activity;
4. import android.os.Bundle;
5. import android.view.ContextMenu;
6. import android.view.ContextMenu.ContextMenuInfo;
7. import android.view.Menu;
8. import android.view.MenuItem;
9. import android.view.View;
10. import android.widget.TextView;
11. import android.widget.Toast;
12. /**
13. *
14. * MyContextMenuActivity.java
15. * @author cloay
16. * 2011-10-18
17. */
18. public class MyContextMenuActivity extends Activity {
19. private TextView textView = null;
20. @Override
21. public void onCreate(Bundle savedInstanceState) {
22. super.onCreate(savedInstanceState);
23. setContentView(R.layout.main);
24. textView = (TextView) findViewById(R.id.text);
25. registerForContextMenu(textView); //<span >為視圖注冊上下文菜單</span>
26. }
27. @Override
28. public void onCreateContextMenu(ContextMenu menu, View v,
29. ContextMenuInfo menuInfo) {
30. menu.setHeaderIcon(android.R.drawable.ic_menu_share);
31. menu.setHeaderTitle("Share to friends");
32. menu.add(Menu.NONE, 0, 0, "發送");
33. menu.add(Menu.NONE, 1, 1, "分享");
34. super.onCreateContextMenu(menu, v, menuInfo);
35. }
36. @Override
37. public boolean onContextItemSelected(MenuItem item) {
38. switch(item.getItemId()){
39. case 0:
40. Toast.makeText(this, "發送給手機聯系人！", Toast.LENGTH_SHORT).show();
41. break;
42. case 1:
43. Toast.makeText(this, "分享到微博！", Toast.LENGTH_SHORT).show();
44. break;
45. }
46. return super.onContextItemSelected(item);
47. }
49. }

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. android:paddingTop="10dip"
7. >
8. <TextView android:id="@+id/text"
9. android:paddingTop="10dip"
10. android:textColor="#FFA07A"
11. android:background="@drawable/bg_normal"
12. android:text="@string/hello"
13. android:layout_width="wrap_content"
14. android:layout_height="wrap_content"/>
15. </LinearLayout>

運行效果圖如下：