@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);
}
}
安卓activity捕获返回按钮关闭应用的方法,布布扣,bubuko.com
原文：http://blog.csdn.net/veloi/article/details/38314765