安卓activity捕获返回按钮关闭应用的方法
@Override public boolean onKeyDown(int keyCode, KeyEvent event) { //按下键盘上返回按钮 if(keyCode == KeyEvent.KEYCODE_BACK){ new AlertDialog.Builder(this) .setIcon(R.drawable.alert_dialog_icon) .setTitle("提示") .setMessage("是否关闭应用?") .setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { } }) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { ZhuZhuApp.exit(); } }).show(); return true; }else{ return super.onKeyDown(keyCode, event); } }