Question

有没有办法在运行对话框时禁用“按键音量增大/减小”?? !!

AlertDialog.Builder builder1 = new AlertDialog.Builder(thisActivity);
builder1.setMessage("Flight mode is ON");
builder1.setCancelable(true);
builder1.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
Intent intent = new Intent(context,MainActivity.class);
startActivity(intent);
}
});
AlertDialog alert11 = builder1.create();
alert11.show();

出现对话框时---＆gt;用户无法使用键音量上/下

Answer 1

覆盖活动中的onKeyDown函数。如果对话框已启动且您收到音量键事件，请忽略它（在这些情况下不要调用super.onKeyDown）。

Answer 2

捕获关键事件但不做任何事情：

@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    int action = event.getAction();
    int keyCode = event.getKeyCode();
        switch (keyCode) {
        case KeyEvent.KEYCODE_VOLUME_UP:
            if (action == KeyEvent.ACTION_UP) {
                //do nothing
            }
            return true;
        case KeyEvent.KEYCODE_VOLUME_DOWN:
            if (action == KeyEvent.ACTION_DOWN) {
                //do nothing
            }
            return true;
        default:
            return super.dispatchKeyEvent(event);
        }
    }

运行对话框时禁用键音量增大/减小

2 个答案: