如何打开android的警告对话框系统级 [英] How to open Alert DIalog System level in android

问题描述

我有打开一个警告对话框，当蓝牙设备连接/断开连接的应用程序。 警报对话框通过连接一个BroadcastReceiver蓝牙设备的触发。

我想打开一个警告对话框，这样，如果我打开我的应用程序的（应用程序A）>长preSS首页>去一个不同的应用程序（应用程序B），蓝牙设备连接 - >我的提醒从应用程序A将被显示在附录二之上。

这是怎么回事，现在是，我只能看到对话框，如果我回去的应用程序A

我目前的code：

 最后AlertDialog.Builder对话框=新AlertDialog.Builder（活动，
            AlertDialog.THEME_DEVICE_DEFAULT_DARK）;

    ......一些设置在这里

    最后AlertDialog警报= dialog.create（）;
    。alert.getWindow（）的setType（WindowManager.LayoutParams.TYPE_SYSTEM_ALERT）;
    alert.show（）;
 

解决方案

这可以帮助你......

  @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）{
        最后的窗口管理器，管理器=（窗口管理器）context.getApplicationContext（）getSystemService（Context.WINDOW_SERVICE）。
        WindowManager.LayoutParams的LayoutParams =新WindowManager.LayoutParams（）;
        layoutParams.gravity = Gravity.CENTER;
        layoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
        layoutParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
        layoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
        layoutParams.alpha = 1.0F;
        layoutParams.packageName = context.getPackageName（）;
        layoutParams.buttonBrightness = 1F;
        layoutParams.windowAnimations = android.R.style.Animation_Dialog;

        最终的视图中查看= View.inflate（context.getApplicationContext（），R.layout.test_layout，NULL）;
        按钮yesButton =（按钮）view.findViewById（R.id.yesButton）;
        按钮noButton =（按钮）view.findViewById（R.id.noButton）;
        yesButton.setOnClickListener（新View.OnClickListener（）{

            @覆盖
            公共无效的onClick（视图v）{
                manager.removeView（视图）;
            }
        }）;
        noButton.setOnClickListener（新View.OnClickListener（）{

            @覆盖
            公共无效的onClick（视图v）{
                manager.removeView（视图）;
            }
        }）;
        manager.addView（视图的LayoutParams）;
    }
}
 

I have an app that opens an Alert Dialog when a bluetooth device is connected / disconnected. The alert dialog is triggered by a BroadcastReceiver on connect of a Bluetooth device.

I want to open an alert dialog such that if I open my app (app A) > long press home > go to a different app (app B), bluetooth device is connected -> my alert from app A will be displayed on top of app B.

What's happening now is that I can only see the dialog if I go back to app A

My current code:

    final AlertDialog.Builder dialog = new AlertDialog.Builder(activity,
            AlertDialog.THEME_DEVICE_DEFAULT_DARK);

    ... some setting here

    final AlertDialog alert = dialog.create();
    alert.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
    alert.show();

解决方案

this may help you...

    @Override
    public void onReceive(Context context, Intent intent) {
        final WindowManager manager = (WindowManager) context.getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
        WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
        layoutParams.gravity = Gravity.CENTER;
        layoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
        layoutParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
        layoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
        layoutParams.alpha = 1.0f;
        layoutParams.packageName = context.getPackageName();
        layoutParams.buttonBrightness = 1f;
        layoutParams.windowAnimations = android.R.style.Animation_Dialog;

        final View view = View.inflate(context.getApplicationContext(),R.layout.test_layout, null);
        Button yesButton = (Button) view.findViewById(R.id.yesButton);
        Button noButton = (Button) view.findViewById(R.id.noButton);
        yesButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                manager.removeView(view);
            }
        });
        noButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                manager.removeView(view);
            }
        });
        manager.addView(view, layoutParams);
    }
}

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