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78 lines
3.6 KiB
Java
78 lines
3.6 KiB
Java
package com.genymobile.scrcpy;
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import android.annotation.SuppressLint;
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import android.app.Application;
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import android.content.ContextWrapper;
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import android.content.pm.ApplicationInfo;
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import android.os.Looper;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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public final class Workarounds {
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private Workarounds() {
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// not instantiable
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}
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@SuppressWarnings("deprecation")
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public static void prepareMainLooper() {
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// Some devices internally create a Handler when creating an input Surface, causing an exception:
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// "Can't create handler inside thread that has not called Looper.prepare()"
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// <https://github.com/Genymobile/scrcpy/issues/240>
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//
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// Use Looper.prepareMainLooper() instead of Looper.prepare() to avoid a NullPointerException:
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// "Attempt to read from field 'android.os.MessageQueue android.os.Looper.mQueue'
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// on a null object reference"
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// <https://github.com/Genymobile/scrcpy/issues/921>
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Looper.prepareMainLooper();
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}
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@SuppressLint("PrivateApi,DiscouragedPrivateApi")
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public static void fillAppInfo() {
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try {
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// ActivityThread activityThread = new ActivityThread();
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Class<?> activityThreadClass = Class.forName("android.app.ActivityThread");
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Constructor<?> activityThreadConstructor = activityThreadClass.getDeclaredConstructor();
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activityThreadConstructor.setAccessible(true);
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Object activityThread = activityThreadConstructor.newInstance();
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// ActivityThread.sCurrentActivityThread = activityThread;
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Field sCurrentActivityThreadField = activityThreadClass.getDeclaredField("sCurrentActivityThread");
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sCurrentActivityThreadField.setAccessible(true);
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sCurrentActivityThreadField.set(null, activityThread);
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// ActivityThread.AppBindData appBindData = new ActivityThread.AppBindData();
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Class<?> appBindDataClass = Class.forName("android.app.ActivityThread$AppBindData");
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Constructor<?> appBindDataConstructor = appBindDataClass.getDeclaredConstructor();
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appBindDataConstructor.setAccessible(true);
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Object appBindData = appBindDataConstructor.newInstance();
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ApplicationInfo applicationInfo = new ApplicationInfo();
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applicationInfo.packageName = FakeContext.PACKAGE_NAME;
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// appBindData.appInfo = applicationInfo;
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Field appInfoField = appBindDataClass.getDeclaredField("appInfo");
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appInfoField.setAccessible(true);
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appInfoField.set(appBindData, applicationInfo);
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// activityThread.mBoundApplication = appBindData;
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Field mBoundApplicationField = activityThreadClass.getDeclaredField("mBoundApplication");
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mBoundApplicationField.setAccessible(true);
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mBoundApplicationField.set(activityThread, appBindData);
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Application app = Application.class.newInstance();
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Field baseField = ContextWrapper.class.getDeclaredField("mBase");
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baseField.setAccessible(true);
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baseField.set(app, FakeContext.get());
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// activityThread.mInitialApplication = app;
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Field mInitialApplicationField = activityThreadClass.getDeclaredField("mInitialApplication");
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mInitialApplicationField.setAccessible(true);
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mInitialApplicationField.set(activityThread, app);
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} catch (Throwable throwable) {
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// this is a workaround, so failing is not an error
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Ln.d("Could not fill app info: " + throwable.getMessage());
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}
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}
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}
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