libgdx使用了全屏模式之后，在某些机型会出现崩溃的情况，两年前就存在了，一直到现在为止，官方都没进行修复，其崩溃原因就是在源码AndroidGraphics.java中的onPause可以看到这样子的一段代码:
void pause () {
synchronized (synch) {
if (!running) return;
running = false;
pause = true;
while (pause) {
try {
// TODO: fix deadlock race condition with quick resume/pause.
// Temporary workaround:
// Android ANR time is 5 seconds, so wait up to 4 seconds before assuming
// deadlock and killing process. This can easily be triggered by opening the
// Recent Apps list and then double-tapping the Recent Apps button with
// ~500ms between taps.
synch.wait(4000);
if (pause) {
// pause will never go false if onDrawFrame is never called by the GLThread
// when entering this method, we MUST enforce continuous rendering
Gdx.app.error(LOG_TAG, "waiting for pause synchronization took too long; assuming deadlock and killing");
android.os.Process.killProcess(android.os.Process.myPid());
}
} catch (InterruptedException ignored) {
Gdx.app.log(LOG_TAG, "waiting for pause synchronization failed!");
}
}
}
}
崩溃的提示就是在这个方法中进行抛出的，解决方法就是,不让他抛出这个错误，就是在try里面把pause改为false，目前的解决方法是这样子，静候官方的修复了，自定义一个类，例如我用的是AndroidFragmentApplication，我自定义一个PatchedAndroidFragmentApplication，在onPause之后利用线程延迟100毫秒，执行一个onDrawFrame，使得pause为false即可：
open class PatchedAndroidFragmentApplication : AndroidFragmentApplication() {
private val exec = Executors.newSingleThreadExecutor()
private val forcePause = Runnable {
try {
Thread.sleep(100)
} catch (e: InterruptedException) {
}
graphics.onDrawFrame(null)
}
override fun onPause() {
if (activity!!.window.attributes.flags and WindowManager.LayoutParams.FLAG_FULLSCREEN == WindowManager.LayoutParams.FLAG_FULLSCREEN) {
// 是全屏
exec.submit(forcePause)
}
super.onPause()
}
}
然后你的Fragment就继承这个自定义的类就行。
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