Lineageos 22.1(Android 15)实现负一屏

一、前言

方案是参考的这位大佬的，大家可以去付费订阅支持一波。我大概理一下Android15的修改。
大佬的方案代码

二、Android15适配调整

1.bp调整，加入aidl引入，这样make之后就可以索引代码了

filegroup {name: "launcher-src",srcs: ["src/**/*.java","src/**/*.kt","src/**/*.aidl"],
}

客户端端按照文章来就行，服务端我微调了一下代码，让切换变得更加平顺，具体还的项目中再调整。其实还差手机重复按的时候停止动画之类的东西处理，遇到的时候再说吧。

package com.google.test;import android.animation.Animator;
import android.animation.ValueAnimator;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Pair;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.animation.LinearInterpolator;
import android.widget.LinearLayout;
import android.widget.TextView;import com.google.android.libraries.launcherclient.ILauncherOverlay;
import com.google.android.libraries.launcherclient.ILauncherOverlayCallback;import androidx.annotation.NonNull;/*** Created by cczheng on 2022/5/25.*/public class ScreenService extends Service {private Context mContext;private WindowManager mWindowManager;private WindowManager.LayoutParams mLayoutParams;private int screenWidth;ILauncherOverlayCallback overlayCallback;private String TAG = "ScreenService";private float progress;@Overridepublic void onCreate() {super.onCreate();mContext = this;mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);mLayoutParams = new WindowManager.LayoutParams();DisplayMetrics outMetrics = new DisplayMetrics();mWindowManager.getDefaultDisplay().getMetrics(outMetrics);screenWidth = outMetrics.widthPixels;Log.d(TAG, "onCreate");}@Overridepublic IBinder onBind(Intent intent) {IBinder iBinder = new ILauncherOverlayImpl().asBinder();Log.i(TAG, "onBind");return iBinder;}public class ILauncherOverlayImpl extends ILauncherOverlay.Stub {private Handler mainThreadHandler;@Overridepublic String getVoiceSearchLanguage() throws RemoteException {return null;}@Overridepublic boolean isVoiceDetectionRunning() throws RemoteException {return false;}@Overridepublic void onPause() throws RemoteException {Log.d(TAG, "onPause");}@Overridepublic void onResume() throws RemoteException {Log.d(TAG, "onResume");}@Overridepublic void requestVoiceDetection(boolean start) throws RemoteException {Log.d(TAG, "requestVoiceDetection");}@Overridepublic void openOverlay(int options) throws RemoteException {Log.i(TAG, "openOverlay");}@Overridepublic void closeOverlay(int options) throws RemoteException {Log.i(TAG, "closeOverlay");}@Overridepublic void startScroll() throws RemoteException {Log.e(TAG, "startScroll");Message.obtain(this.mainThreadHandler, OverlayCallback.START_SCROLL).sendToTarget();}@Overridepublic void onScroll(float progress) throws RemoteException {
//            Log.i(TAG,"onScroll=" + progress);Message.obtain(this.mainThreadHandler, OverlayCallback.UPDATE_SCROLL, progress).sendToTarget();}@Overridepublic void endScroll() throws RemoteException {Log.e(TAG, "endScroll");Message.obtain(this.mainThreadHandler, OverlayCallback.END_SCROLL).sendToTarget();}@Overridepublic void windowAttached(WindowManager.LayoutParams attrs, ILauncherOverlayCallback callbacks,int options) throws RemoteException {Log.i(TAG, "windowAttached.....");
//            doWindowAttached(attrs, callbacks, options);overlayCallback = callbacks;Bundle bundle = new Bundle();bundle.putParcelable("layout_params", attrs);bundle.putInt("client_options", options);OverlayCallback overlayCallback = new OverlayCallback(ScreenService.this);mainThreadHandler = new Handler(Looper.getMainLooper(), overlayCallback);Message.obtain(this.mainThreadHandler, OverlayCallback.WINDOW_ATTACHED,Pair.create(bundle, callbacks)).sendToTarget();}@Overridepublic void windowDetached(boolean isChangingConfigurations) throws RemoteException {Log.d(TAG, "windowDetached");Message.obtain(this.mainThreadHandler, OverlayCallback.WINDOW_DETACHCHED, isChangingConfigurations).sendToTarget();}}private void applyScroll(View view)  {try {overlayCallback.overlayScrollChanged(progress);mLayoutParams.x = (int) (-screenWidth*(1-progress));mWindowManager.updateViewLayout(view, mLayoutParams);} catch (RemoteException e) {throw new RuntimeException(e);}}private void startProgressAnimation(boolean open,View view) {ValueAnimator valueAnimator=(open)? ValueAnimator.ofFloat(progress, 1f):ValueAnimator.ofFloat(progress, 0f);valueAnimator.setDuration(500);valueAnimator.setInterpolator(new LinearInterpolator());valueAnimator.addListener(new Animator.AnimatorListener() {@Overridepublic void onAnimationStart(Animator animation) {}@Overridepublic void onAnimationEnd(Animator animation) {try {overlayCallback.overlayScrollChanged(0);} catch (RemoteException e) {e.printStackTrace();}}@Overridepublic void onAnimationCancel(Animator animation) {}@Overridepublic void onAnimationRepeat(Animator animation) {}});valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {@Overridepublic void onAnimationUpdate(ValueAnimator animation) {progress= (float) valueAnimator.getAnimatedValue();applyScroll(view);}});valueAnimator.start();}class OverlayCallback implements Handler.Callback {public static final int WINDOW_ATTACHED = 100;public static final int START_SCROLL = 101;public static final int UPDATE_SCROLL = 102;public static final int END_SCROLL = 103;public static final int WINDOW_DETACHCHED = 104;private ScreenService screenService;private LinearLayout mOverlayDecorView;public OverlayCallback(ScreenService screenService) {this.screenService = screenService;}@Overridepublic boolean handleMessage(@NonNull Message msg) {try {if (msg.what == WINDOW_ATTACHED) {
//                bundle.putParcelable("layout_params", attrs);
//                bundle.putInt("client_options", options);Pair<Bundle, ILauncherOverlayCallback> pair = (Pair<Bundle, ILauncherOverlayCallback>) msg.obj;WindowManager.LayoutParams layoutParams = pair.first.getParcelable("layout_params");
//                    overlayCallback = pair.second;doWindowAttached(layoutParams, pair.second, 1);} else if (msg.what == START_SCROLL) {} else if (msg.what == UPDATE_SCROLL) {progress = (float) msg.obj;Log.d(TAG, "progress=" + progress);applyScroll(mOverlayDecorView);} else if (msg.what == END_SCROLL) {startProgressAnimation(progress>0.4f,mOverlayDecorView);}} catch (RemoteException e) {e.printStackTrace();}return false;}public void doWindowAttached(WindowManager.LayoutParams lp, ILauncherOverlayCallback cb,int flags) throws RemoteException {mLayoutParams = new WindowManager.LayoutParams();mLayoutParams.width = ViewGroup.LayoutParams.MATCH_PARENT;mLayoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT;mLayoutParams.gravity = Gravity.START;// 负一屏的 Window 层级比 Launcher 的大就可以mLayoutParams.type = lp.type + 1;mLayoutParams.token = lp.token;mLayoutParams.flags = WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS |WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS |WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;mLayoutParams.x = -screenWidth;Log.d(TAG, "doWindowAttached." + lp.type + "   " + lp.token + "   " + (-screenWidth));mLayoutParams.format = PixelFormat.TRANSLUCENT;mOverlayDecorView = new LinearLayout(mContext);mOverlayDecorView.setGravity(Gravity.CENTER);mOverlayDecorView.setBackgroundColor(Color.RED);TextView textView = new TextView(mContext);textView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT));textView.setText("XXXXXXXX");textView.setTextSize(25);textView.setTextColor(Color.WHITE);mOverlayDecorView.addView(textView);mWindowManager.addView(mOverlayDecorView, mLayoutParams);mOverlayDecorView.setOnTouchListener(new OverlayOnTouchListener());if (cb != null) {cb.overlayStatusChanged(1);}}}private boolean isDrag;private class OverlayOnTouchListener implements View.OnTouchListener {private int firstX;private int lastX;@Overridepublic boolean onTouch(View view, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:isDrag = false;firstX = (int) event.getRawX();lastX = (int) event.getRawX();break;case MotionEvent.ACTION_MOVE:isDrag = true;int nowX = (int) event.getRawX();int movedX = nowX - lastX;lastX = nowX;
//                    Log.d(TAG,"movedX=" + movedX);if (movedX < 0) {//只能左滑，滑到launcher中mLayoutParams.x = mLayoutParams.x + movedX;progress=1-((float) -mLayoutParams.x )/((float) screenWidth);applyScroll(view);
//                        mWindowManager.updateViewLayout(view, mLayoutParams);
//                        try {
//                            overlayCallback.overlayScrollChanged();
//                        } catch (RemoteException e) {
//                            throw new RuntimeException(e);
//                        }}break;case MotionEvent.ACTION_UP:int stopX = (int) event.getRawX();int movedFX = stopX - firstX;Log.d(TAG,"lastX=" + lastX + "  isDrag=" + isDrag + "  movedFX=" + movedFX);if (isDrag && movedFX < 0) {progress=1-((float) -mLayoutParams.x )/((float) screenWidth);startProgressAnimation(false,view);}break;}return isDrag || view.onTouchEvent(event);}}}