显示“吐司”对话框是否打开？

Question

This is an extremely simple issue I am facing. Basically, I am requesting run-time permissions—but I also want to show a toast at the same time as the permission request:

Relevent Code:

if ((ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED
                                    || ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)) {
                                ActivityCompat.requestPermissions(MainActivity.this, new String[]{


                                        Manifest.permission.RECORD_AUDIO,
                                        Manifest.permission.WRITE_EXTERNAL_STORAGE}, 4);

                                Toast.makeText(MainActivity.this, "You must enable BOTH", Toast.LENGTH_LONG).show();

The problem is, the toast quickly disappears (within maybe less than 0.5 second), as soon as the permission dialog appears.

Is this a bug on Android? Or is there some work around that I'm missing?

Answer 1

Toasts don't display permanently. The entire concept of a Toast is that it pops up then fades away. If you want something more permanent, you'll have to implement it yourself.

Answer 2

这是android中权限的默认对话框，因此this.ya没有解决方案，但是如果您创建自定义对话框，则可以在所需位置显示它。

Answer 3

Toast message is displayed for short duration of 2 sec or for long duration of 3.5 sec and it cannot be changed.

If you wish to display the toast message for longer time then you need to display it continuously.

for (int i=0; i < 5; i++){
    Toast.makeText(this, "Your toast message", Toast.LENGTH_SHORT).show();
}

It will display your toast for 10 seconds.

Hope it helps :)

Answer 4

尝试使上下文为

Toast.makeText(getApplicationContext(),"YOUR TEXT",Toast.LENGTH_LONG).show();