活动在接近传感器的屏幕上消失

Question

I've an activity dialog that is displayed when the activity receives a custom broadcast intent filter. The application uses the proximity sensor to turn the screen off. But when the screen turns on again, the dialog disappears. How can I prevent the dialog from disappearing?

Answer 1

use flags in Activity

When screen off it just recreate activity then onCreate method is call so Activity re initialize it self and all content is reloaded

If you set configChanges flag in your activity it does not recreate the activity just resume it

Do this is your manifest file where you define your activity

<activity
            android:name=".MyActivity"
            android:configChanges="orientation|keyboardHidden|keyboard"
            android:label="MYLabel" >
        </activity>

Answer 2

yourDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

This will not let screen go off while your dialog is visible.