为防止应用的意外操作按键退出，可以使用退出提示框！
在activity里加入代码如下：
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (((keyCode == KeyEvent.KEYCODE_BACK) ||
(keyCode == KeyEvent.KEYCODE_HOME))
&& event.getRepeatCount() == 0) {
dialog_Exit(MainActivity.this);
}
return false;
//end onKeyDown
}
public static void dialog_Exit(Context context) {
AlertDialog.Builder builder = new Builder(context);
builder.setMessage("确定要退出吗?");
builder.setTitle("提示");
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setPositiveButton("确认",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
android.os.Process.killProcess(android.os.Process
.myPid());
}
});
builder.setNegativeButton("取消",
new android.content.DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create().show();
}
Demo示图:
