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Fix meizu 16th NPE

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Fill AppInfo to avoid NullPointerException on some devices.

Fixes <https://github.com/Genymobile/scrcpy/issues/365>

Signed-off-by: Romain Vimont <rom@rom1v.com>
This commit is contained in:
act262 2019-10-28 11:18:53 +08:00 committed by Romain Vimont
parent 213c468c20
commit 90293240cc
2 changed files with 44 additions and 0 deletions
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1
server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java
View file

@ -53,6 +53,7 @@ public class ScreenEncoder implements Device.RotationListener {
public void streamScreen(Device device, FileDescriptor fd) throws IOException {
Workarounds.prepareMainLooper();
Workarounds.fillAppInfo();
MediaFormat format = createFormat(bitRate, maxFps, iFrameInterval);
device.setRotationListener(this);

43
server/src/main/java/com/genymobile/scrcpy/Workarounds.java
View file

@ -1,7 +1,12 @@
package com.genymobile.scrcpy;
import android.annotation.SuppressLint;
import android.content.pm.ApplicationInfo;
import android.os.Looper;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
public final class Workarounds {
private Workarounds() {
// not instantiable
@ -18,4 +23,42 @@ public final class Workarounds {
// <https://github.com/Genymobile/scrcpy/issues/921>
Looper.prepareMainLooper();
}
@SuppressLint("PrivateApi")
public static void fillAppInfo() {
try {
// ActivityThread activityThread = new ActivityThread();
Class<?> activityThreadClass = Class.forName("android.app.ActivityThread");
Constructor<?> activityThreadConstructor = activityThreadClass.getDeclaredConstructor();
activityThreadConstructor.setAccessible(true);
Object activityThread = activityThreadConstructor.newInstance();
// ActivityThread.sCurrentActivityThread = activityThread;
Field sCurrentActivityThreadField = activityThreadClass.getDeclaredField("sCurrentActivityThread");
sCurrentActivityThreadField.setAccessible(true);
sCurrentActivityThreadField.set(null, activityThread);
// ActivityThread.AppBindData appBindData = new ActivityThread.AppBindData();
Class<?> appBindDataClass = Class.forName("android.app.ActivityThread$AppBindData");
Constructor<?> appBindDataConstructor = appBindDataClass.getDeclaredConstructor();
appBindDataConstructor.setAccessible(true);
Object appBindData = appBindDataConstructor.newInstance();
ApplicationInfo applicationInfo = new ApplicationInfo();
applicationInfo.packageName = "com.genymobile.scrcpy";
// appBindData.appInfo = applicationInfo;
Field appInfo = appBindDataClass.getDeclaredField("appInfo");
appInfo.setAccessible(true);
appInfo.set(appBindData, applicationInfo);
// activityThread.mBoundApplication = appBindData;
Field mBoundApplicationField = activityThreadClass.getDeclaredField("mBoundApplication");
mBoundApplicationField.setAccessible(true);
mBoundApplicationField.set(activityThread, appBindData);
} catch (Throwable throwable) {
// this is a workaround, so failing is not an error
Ln.w("Could not fill app info: " + throwable.getMessage());
}
}
}