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| 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 | public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView textView1 = (TextView) findViewById(R.id.textView1); registerForContextMenu(textView1); //注册上下文菜单 TextView textView2 = (TextView) findViewById(R.id.textView2); registerForContextMenu(textView2); //注册上下文菜单 } @Override public boolean onContextItemSelected(MenuItem item) //上下文菜单点击事件 { switch (item.getItemId()) { case 1 : Toast.makeText( this , "确定" , Toast.LENGTH_LONG).show(); break ; case 2 : Toast.makeText( this , "退出" , Toast.LENGTH_LONG).show(); break ; default : break ; } return super .onContextItemSelected(item); } @Override //创建上下文菜单 public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) { switch (v.getId()) //根据控件id创建上下文菜单 { case R.id.textView1: menu.add( 0 , 1 , 0 , "确定" ); menu.add( 0 , 2 , 0 , "退出" ); break ; case R.id.textView2: menu.add( 0 , 3 , 0 , "编辑" ); menu.add( 0 , 4 , 0 , "修改" ); break ; default : break ; } super .onCreateContextMenu(menu, v, menuInfo); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true ; } } |