Android 13 about launcher3 (1)

Android 13 Launcher3
android13#launcher3#分屏相关

Launcher3修改 wm density界面布局不改变

/packages/apps/Launcher3/src/com/android/launcher3/InvariantDeviceProfile.java
Launcher的默认配置加载类，通过InvariantDeviceProfile方法可以看出，
CellLayout显示的应用行数和列数可以通过findClosestDeviceProfiles查询XML配置来读取配参

Launcher3图标布局原理解析

Android 13 diff

index 02ebb15cd1..36ce9bf7bf 100644
--- a/packages/apps/Launcher3/src/com/android/launcher3/util/DisplayController.java
+++ b/packages/apps/Launcher3/src/com/android/launcher3/util/DisplayController.java
@@ -284,7 +284,7 @@ public class DisplayController implements ComponentCallbacks, SafeCloseable {if (change != 0) {mInfo = newInfo;final int flags = change;
-            MAIN_EXECUTOR.execute(() -> notifyChange(displayInfoContext, flags));
+            //MAIN_EXECUTOR.execute(() -> notifyChange(displayInfoContext, flags));}}

Android 11 diff

./packages/apps/Launcher3/src/com/android/launcher3/util/ConfigMonitor.java@Overridepublic void onDisplayChanged(int displayId) {if (displayId != mDisplayId) {return;}Display display = getDefaultDisplay(mContext);display.getRealSize(mTmpPoint1);if (!mRealSize.equals(mTmpPoint1) && !mRealSize.equals(mTmpPoint1.y, mTmpPoint1.x)) {LogUtils.d(TAG, String.format("Display size changed from %s to %s", mRealSize, mTmpPoint1));notifyChange();return;}display.getCurrentSizeRange(mTmpPoint1, mTmpPoint2);if (!mSmallestSize.equals(mTmpPoint1) || !mLargestSize.equals(mTmpPoint2)) {LogUtils.d(TAG, String.format("Available size changed from [%s, %s] to [%s, %s]",mSmallestSize, mLargestSize, mTmpPoint1, mTmpPoint2));notifyChange();}}public synchronized void notifyChange() {if (mCallback != null) {Consumer<Context> callback = mCallback;mCallback = null;new MainThreadExecutor().execute(() -> {//add text//LauncherAppMonitor.getInstance(mContext).onUIConfigChanged();//callback.accept(mContext);//add text});}}

Android 13 关于旋转屏幕之后,按home键回Launcher3失效

//自动旋转
public static final String ACCELEROMETER_ROTATION = "accelerometer_rotation";
adb shell settings get system accelerometer_rotation  --> 0 off 1 on

Android 12之后,Launcher3有两个模式,一个是平板,另一个是手机.
手机模式:桌面默认是不可以旋转的.

桌面设置页面:桌面空白处长按,进入home settings,有个allow home screen rotation就是旋转开关,手机模式默认是关闭的,平板模式这个偏好隐藏了.

./packages/apps/Launcher3/res/values/config.xml    
<string name="settings_fragment_name" translatable="false">com.android.launcher3.settings.SettingsActivity$LauncherSettingsFragment</string>./packages/apps/Launcher3/src/com/android/launcher3/settings/SettingsActivity.java
public static class LauncherSettingsFragment extends PreferenceFragmentCompat 
{protected boolean initPreference(Preference preference) {switch (preference.getKey()) {case NOTIFICATION_DOTS_PREFERENCE_KEY:return !WidgetsModel.GO_DISABLE_NOTIFICATION_DOTS;case ALLOW_ROTATION_PREFERENCE_KEY:DisplayController.Info info =DisplayController.INSTANCE.get(getContext()).getInfo();if (info.isTablet(info.realBounds)) {// Launcher supports rotation by default. No need to show this setting.//是平板,不显示这个选项return false;}// Initialize the UI once //非平板,默认显示,preference.setDefaultValue(RotationHelper.getAllowRotationDefaultValue(info));//控制是否旋转return true;...}
}./packages/apps/Launcher3/src/com/android/launcher3/states/RotationHelper.javapublic static boolean getAllowRotationDefaultValue(DisplayController.Info info) {android.util.Log.d("tag","info.currentSize.x: " +info.currentSize.x);android.util.Log.d("tag","info.currentSize.y: " +info.currentSize.y);float originalSmallestWidth = dpiFromPx(Math.min(info.currentSize.x, info.currentSize.y),DENSITY_DEVICE_STABLE);return originalSmallestWidth >= MIN_TABLET_WIDTH;//MIN_TABLET_WIDTH = 600;}public static float dpiFromPx(float size, int densityDpi) {float densityRatio = (float) densityDpi / DisplayMetrics.DENSITY_DEFAULT;//DENSITY_DEFAULT=160;return (size / densityRatio);}//关于DENSITY_DEVICE_STABLEprivate static int getDeviceDensity() {//ro.sf.lcd_density的值在初始化进程的时候从build.prop里读取写入一次，之后不会修改//qemu.sf.lcd_density覆写上边的值，目的是在模拟器的时候可以动态修改return SystemProperties.getInt("qemu.sf.lcd_density",SystemProperties.getInt("ro.sf.lcd_density", DENSITY_DEFAULT));}initialize()->初始化setIgnoreAutoRotateSettingsprivate void setIgnoreAutoRotateSettings(boolean ignoreAutoRotateSettings,DisplayController.Info info) {// On large devices we do not handle auto-rotate differently.mIgnoreAutoRotateSettings = ignoreAutoRotateSettings;if (!mIgnoreAutoRotateSettings) {mHomeRotationEnabled = LauncherPrefs.get(mActivity).get(ALLOW_ROTATION);LauncherPrefs.get(mActivity).addListener(this, ALLOW_ROTATION);} else {LauncherPrefs.get(mActivity).removeListener(this, ALLOW_ROTATION);}}//手动控制屏幕旋转的方式private void setOritation(int i) {try {IWindowManager windowManagerService = WindowManagerGlobal.getWindowManagerService();if (i == 0) {windowManagerService.freezeRotation(0);Settings.System.putInt(this.mContext.getContentResolver(), "accelerometer_rotation", 0);//关闭自动旋转} else if (i == 90) {windowManagerService.freezeRotation(1);Settings.System.putInt(this.mContext.getContentResolver(), "accelerometer_rotation", 0);} else if (i == 180) {windowManagerService.freezeRotation(2);Settings.System.putInt(this.mContext.getContentResolver(), "accelerometer_rotation", 0);} else if (i == 270) {windowManagerService.freezeRotation(3);Settings.System.putInt(this.mContext.getContentResolver(), "accelerometer_rotation", 0);} else if (i == -1) {Settings.System.putInt(this.mContext.getContentResolver(), "accelerometer_rotation", 1);//打开自动旋转}} catch (Exception e) {...}}Settings.System.getInt(mContext.getContentResolver(), Settings.System.USER_ROTATION, 0);adb shell settings get system user_rotation(修改后查询)//修改  默认打开主界面旋转
+++ b/packages/apps/Launcher3/res/xml/launcher_preferences.xml
@@ -45,7 +45,7 @@android:key="pref_allowRotation"android:title="@string/allow_rotation_title"android:summary="@string/allow_rotation_desc"
-        android:defaultValue="false"
+        android:defaultValue="true"android:persistent="true"launcher:logIdOn="615"launcher:logIdOff="616" />
diff --git a/packages/apps/Launcher3/src/com/android/launcher3/states/RotationHelper.java b/packages/apps/Launcher3/src/com/android/launcher3/states/RotationHelper.java
index 7b4e2485ce..6693f9f123 100644
--- a/packages/apps/Launcher3/src/com/android/launcher3/states/RotationHelper.java
+++ b/packages/apps/Launcher3/src/com/android/launcher3/states/RotationHelper.java
@@ -55,7 +55,7 @@ public class RotationHelper implements OnSharedPreferenceChangeListener,// original dimensions to determine if rotation is allowed of not.float originalSmallestWidth = dpiFromPx(Math.min(info.currentSize.x, info.currentSize.y),DENSITY_DEVICE_STABLE);
-        return originalSmallestWidth >= MIN_TABLET_WIDTH;
+        return true;//originalSmallestWidth >= MIN_TABLET_WIDTH;//add text}

从源头隐藏某个apk不在最近应用(RecentView)显示

//这个改法:再需要隐藏的app,按Recent,有动画时显得卡顿,建议可以在Launcher3内尝试隐藏
frameworks/base/services/core/java/com/android/server/wm/RecentTasks.java/*** @return the list of recent tasks for presentation.*/private ArrayList<ActivityManager.RecentTaskInfo> getRecentTasksImpl(int maxNum, int flags,boolean getTasksAllowed, int userId, int callingUid) {final boolean withExcluded = (flags & RECENT_WITH_EXCLUDED) != 0;if (!isUserRunning(userId, FLAG_AND_UNLOCKED)) {Slog.i(TAG, "user " + userId + " is still locked. Cannot load recents");return new ArrayList<>();}loadUserRecentsLocked(userId);final Set<Integer> includedUsers = getProfileIds(userId);includedUsers.add(Integer.valueOf(userId));final ArrayList<ActivityManager.RecentTaskInfo> res = new ArrayList<>();final int size = mTasks.size();int numVisibleTasks = 0;for (int i = 0; i < size; i++) {final Task task = mTasks.get(i);if (isVisibleRecentTask(task)) {numVisibleTasks++;if (isInVisibleRange(task, i, numVisibleTasks, withExcluded)) {// Fall through} else {// Not in visible rangecontinue;}} else {// Not visiblecontinue;}// Skip remaining tasks once we reach the requested sizeif (res.size() >= maxNum) {continue;}// Only add calling user or related users recent tasksif (!includedUsers.contains(Integer.valueOf(task.mUserId))) {if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "Skipping, not user: " + task);continue;}...//add textComponentName cn = task.intent.getComponent();if(cn != null && cn.getPackageName().equals("com.xxx.xxx")){continue;}else{res.add(createRecentTaskInfo(task, true /* stripExtras */));}//add text}return res;}

Android T Launcher3
Android T Launcher3_recentView

T replace default launcher

关于3.0Ver 利用role不需要删除旧Launcher栈的补充.
case 1: 单独使用role,确实不需要删除旧Launcher栈,唯一需要注意点的是要在Launcher启动之前,把android.app.role.HOME替换,
所以需要在framework里某个必经之路上做文章…

//about home role
packages/modules/Permission/PermissionController/src/com/android/permissioncontroller/role/model/HomeRoleBehavior.java
packages/modules/Permission/PermissionController/src/com/android/permissioncontroller/role/ui/ManageRoleHolderStateLiveData.javapackages/modules/Permission/service/java/com/android/role/RoleService.java
addRoleHolderAsUser(...)
removeRoleHolderAsUser(...)
getRoleHoldersAsUser(...)frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java+import android.app.role.RoleManager;
+import java.util.concurrent.Executor;
+import java.util.function.Consumer;
+@Overridepublic void systemReady() {// In normal flow, systemReady is called before other system services are ready.// So it is better not to bind keyguard here.mKeyguardDelegate.onSystemReady();...mAutofillManagerInternal = LocalServices.getService(AutofillManagerInternal.class);mGestureLauncherService = LocalServices.getService(GestureLauncherService.class);
+        setDefaultLauncherItemToHomeRole(mContext);//add}public void setDefaultLauncherItemToHomeRole(Context context) {RoleManager roleManager = context.getSystemService(RoleManager.class);String packageName = SystemProperties.get("persist.xx.def_xxx_launcher", null);List<String> list = roleManager_1.getRoleHolders("android.app.role.HOME");boolean repeat_flag = false;for (int i = 0; i < list.size(); i++) {if (list.get(i).equals(packageName)) {flag = true;}}if (repeat_flag) return;if (packageName != null && !"".equals(packageName)) {String roleName = "android.app.role.HOME";boolean add = true;int flags = 0;UserHandle user = Process.myUserHandle();Log.d("tag", "role: " + roleName + ", package: " + packageName);Executor executor = context.getMainExecutor();Consumer<Boolean> callback = successful -> {if (successful) {Log.d("tag", "Success , role: " + roleName + ", package: " + packageName);} else {Log.d("tag", "Failed , role: " + roleName + ", package: " + packageName);}};roleManager.addRoleHolderAsUser(roleName, packageName, flags, user, executor, callback);}}

case 2:ResolverActivity

frameworks/base/core/java/com/android/internal/app/ResolverActivity.java
onCreate()->rebuildList()->onPostListReady()->isAutolaunching()...                        protected void onCreate(Bundle savedInstanceState, Intent intent,CharSequence title, int defaultTitleRes, Intent[] initialIntents,List<ResolveInfo> rList, boolean supportsAlwaysUseOption) {setTheme(appliedThemeResId());super.onCreate(savedInstanceState);//add textif(true){setDefaultLauncher("com.xx.xxx");finish();return;}//add textmQuietModeManager = createQuietModeManager();...}    //add textprivate List<ResolveInfo> getResolveInfoList() {PackageManager pm = getPackageManager();Intent intent = new Intent(Intent.ACTION_MAIN, null);intent.addCategory(Intent.CATEGORY_HOME);intent.addCategory(Intent.CATEGORY_DEFAULT);return pm.queryIntentActivities(intent, 0);}private ResolveInfo getCurrentLauncher() {PackageManager pm = getPackageManager();Intent intent = new Intent(Intent.ACTION_MAIN, null);intent.addCategory(Intent.CATEGORY_HOME);intent.addCategory(Intent.CATEGORY_DEFAULT);return pm.resolveActivity(intent, 0);}private void setDefaultLauncher(String packageName) {PackageManager pm = getPackageManager();ResolveInfo oldCurrentLauncher = getCurrentLauncher();List<ResolveInfo> packageInfos = getResolveInfoList();ResolveInfo customerLauncher = null;for (ResolveInfo ri : packageInfos) {if (!TextUtils.isEmpty(ri.activityInfo.packageName) && !TextUtils.isEmpty(packageName)&& TextUtils.equals(ri.activityInfo.packageName, packageName)) {customerLauncher = ri;}}if (customerLauncher == null) return;pm.clearPackagePreferredActivities(oldCurrentLauncher.activityInfo.packageName);//clear old LauncherIntentFilter intentFilter = new IntentFilter();intentFilter.addAction(Intent.ACTION_MAIN);intentFilter.addCategory(Intent.CATEGORY_HOME);intentFilter.addCategory(Intent.CATEGORY_DEFAULT);ComponentName componentName = new ComponentName(customerLauncher.activityInfo.packageName,customerLauncher.activityInfo.name);ComponentName[] componentNames = new ComponentName[packageInfos.size()];int defaultMatch = 0;for (int i = 0; i < packageInfos.size(); i++) {ResolveInfo resolveInfo = packageInfos.get(i);componentNames[i] = new ComponentName(resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name);if (defaultMatch < resolveInfo.match) {defaultMatch = resolveInfo.match;}}pm.clearPackagePreferredActivities(oldCurrentLauncher.activityInfo.packageName);pm.addPreferredActivity(intentFilter, defaultMatch, componentNames, componentName);}//add text

Android13设置默认Launcher分析
Android13设置默认Launcher分析
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