android-菜单键，返回键，搜索键的重写

 

android-菜单键，返回键，搜索键的重写

分类： android基础 2011-08-07 21:08  852人阅读  评论(0)  收藏  举报

返回键

@Override

public void onBackPressed() {
    // TODO Auto-generated method stub
    Toast toast=Toast.makeText(config.this, "此键坏掉了。。。\n按旁边的吧！", 3000);
    toast.setGravity(Gravity.CENTER, 0, 0);
    toast.show();
}

搜索键
    @Override
    public boolean onSearchRequested() {
        // TODO Auto-generated method stub
        Toast.makeText(config.this, "我一直是坏掉的。。。", 1000).show();
        return super.onSearchRequested();
    }

菜单键

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // TODO Auto-generated method stub
        menu.add(0, 0, 0, "退出");
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // TODO Auto-generated method stub
        switch (item.getItemId()) {
        case 0:

            finish();
            break;
        }
        return super.onOptionsItemSelected(item);
    }

 

<span style="color:#FF0000;">先禁止Home键，再在onKeyDown里处理按键值，点击Home键的时候就把程序关闭</span>

 

@Override
 public boolean onKeyDown(int keyCode, KeyEvent event)
{ // TODO Auto-generated method stub
  if(KeyEvent.KEYCODE_HOME==keyCode)
    android.os.Process.killProcess(android.os.Process.myPid());
     return super.onKeyDown(keyCode, event);
  }

@Override
 public void onAttachedToWindow()
 { // TODO Auto-generated method stub
    this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
    super.onAttachedToWindow();
 }


加权限禁止Home键
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"></uses-permission>