android10.0(Q) Launcher3 去掉抽屉
程序员文章站
2022-06-30 16:36:30
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效果图
修改思路
1、增加变量 launcher3.is_full_app，用来动态切换
2、增加两套布局，对应有抽屉和无抽屉
3、去除 allAppsButton
4、将 AllAppsContainerView 中的图标加载到 Workspace
5、新安装的 app 自动添加图标到 Workspace
6、替换 Workspace 图标长按删除选项为取消
7、屏蔽上拉显示抽屉页面手势
8、修改页面指示线为圆点
上代码
1、Settings 中增加字段 launcher3.is_full_app
public static final String LAUNCHER3_IS_FULL_APP = "launcher3.is_full_app";
采用之前零时变量的方式在10.0中保存值后，清空Launcher3缓存操作，对应值就没了，所以需要增加到 Settings 中写入数据库，
增加完后执行 make api-stubs-docs-update-current-api 编译
- 在 LauncherAppState 中增加静态方法 isDisableAllApps(), 通过修改 Settings 中 LAUNCHER3_IS_FULL_APP 的值
packages\apps\Launcher3\src\com\android\launcher3\LauncherAppState.java
private static Context mContext;
public static boolean isDisableAllApps() {
if (mContext != null) {
return Settings.System.getInt(mContext.getContentResolver(),
Settings.LAUNCHER3_IS_FULL_APP, 0) == 1;
}
return true;
}
packages\apps\Launcher3\AndroidManifest-common.xml
-
AndroidManifest-common.xml 中增加权限
-
在 SettingsActivity 中增加 SwitchPreference 用以动态修改 LAUNCHER3_IS_FULL_APP
packages\apps\Launcher3\src\com\android\launcher3\SettingsActivity.java
在内部类 LauncherSettingsFragment 中重写 onPreferenceTreeClick() 用以监听 SwitchPreference 点击
import com.android.launcher3.util.LooperExecutor;
import com.android.launcher3.LauncherModel;
import android.app.ProgressDialog;
import android.util.Log;
import androidx.preference.SwitchPreference;
import android.content.Intent;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.os.SystemClock;
import com.android.launcher3.LauncherAppState;
/**
* This fragment shows the launcher preferences.
*/
public static class LauncherSettingsFragment extends PreferenceFragment {
.....
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
....
//读取保存的值，初始化 SwitchPreference 的初始状态，是否选中
int isFull = Settings.System.getInt(getActivity().getContentResolver(),
Settings.LAUNCHER3_IS_FULL_APP, 0);
Log.d("Launcher3", "sys.launcher3.is_full_app="+isFull);
SwitchPreference fullSwitch = (SwitchPreference) findPreference("pref_is_full_app");
fullSwitch.setChecked(isFull==1);
fullSwitch.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
boolean checked = (boolean)newValue;
Settings.System.putInt(getActivity().getContentResolver(), Settings.LAUNCHER3_IS_FULL_APP,
checked ? 1 : 0);
Log.e("Launcher3", "SwitchPreference checked="+checked);
// Value has changed
ProgressDialog.show(getActivity(),
null /* title */,
getActivity().getString(R.string.full_app_override_progress),
true /* indeterminate */,
false /* cancelable */);
new LooperExecutor(LauncherModel.getWorkerLooper()).execute(
new OverrideApplyHandler(getActivity()));
return false;
}
});
}
}
点击 SwitchPreference 后需要保存 LAUNCHER3_IS_FULL_APP 新值，同时清除 Launcher3 的缓存，延时启动并结束当前进程
清除缓存方法 clearApplicationUserData 在 Launcher3 中编译报错，所以通过发送广播到 Setting 中进行真正的清缓存操作
//add for change is_full_app value
private static class OverrideApplyHandler implements Runnable {
private final Context mContext;
private OverrideApplyHandler(Context context) {
mContext = context;
}
@Override
public void run() {
// Clear the icon cache.
LauncherAppState.getInstance(mContext).getIconCache().clear();
// Wait for it
try {
Thread.sleep(1000);
} catch (Exception e) {
Log.e("Launcher3", "Error waiting", e);
}
// Schedule an alarm before we kill ourself.
Intent homeIntent = new Intent(Intent.ACTION_MAIN)
.addCategory(Intent.CATEGORY_HOME)
.setPackage(mContext.getPackageName())
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pi = PendingIntent.getActivity(mContext, 42,
homeIntent, PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_ONE_SHOT);
mContext.getSystemService(AlarmManager.class).setExact(
AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 50, pi);
//clear data will kill process
Intent intent = new Intent("com.android.action.CLEAR_APP_DATA");
intent.putExtra("pkgName", "com.android.launcher3");
intent.addFlags(0x01000000);
mContext.sendBroadcast(intent);
Log.i("Launcher3", "Clearing user data com.android.launcher3");
// Kill process
android.os.Process.killProcess(android.os.Process.myPid());
}
}
- SettingsActivity 对应的 xml 文件修改 launcher_preferences
packages\apps\Launcher3\res\xml\launcher_preferences.xml
<SwitchPreference
android:key="pref_is_full_app"
android:title="@string/is_full_app_title"
android:summary="@string/is_full_app_desc"
android:defaultValue="false"
android:persistent="true" />
对应的 string 文件就不贴了，自己增加下就行
2、增加两套布局，对应有抽屉和无抽屉
加载布局文件对应的 xml 为 packages\apps\Launcher3\res\xml\device_profiles.xml
Launcher3 通过获取 minWidthDps 和 minHeightDps 来确定加载哪一个 profile，我的平板分辨率是 1280*800 的，增加两个 profile 节点
<grid-option
launcher:name="5_by_5"
launcher:numRows="5"
launcher:numColumns="5"
launcher:numFolderRows="4"
launcher:numFolderColumns="4"
launcher:numHotseatIcons="5"
launcher:defaultLayoutId="@xml/default_workspace_5x5" >
<display-option
launcher:name="Large Phone"
launcher:minWidthDps="406"
launcher:minHeightDps="694"
launcher:iconImageSize="56"
launcher:iconTextSize="14.4"
launcher:canBeDefault="true" />
<display-option
launcher:name="Shorter Stubby"
launcher:minWidthDps="255"
launcher:minHeightDps="400"
launcher:iconImageSize="48"
launcher:iconTextSize="13.0"
launcher:canBeDefault="true" />
</grid-option>
<grid-option
launcher:name="5_by_5"
launcher:numRows="5"
launcher:numColumns="5"
launcher:numFolderRows="4"
launcher:numFolderColumns="4"
launcher:numHotseatIcons="4"
launcher:defaultLayoutId="@xml/default_workspace_5x5_no_all_app" >
<display-option
launcher:name="Large Phone"
launcher:minWidthDps="380"
launcher:minHeightDps="590"
launcher:iconImageSize="50"
launcher:iconTextSize="11"
launcher:canBeDefault="true" />
<display-option
launcher:name="Shorter Stubby"
launcher:minWidthDps="255"
launcher:minHeightDps="400"
launcher:iconImageSize="48"
launcher:iconTextSize="13.0"
launcher:canBeDefault="true" />
</grid-option>
对应的你需要在 xml 文件下增加 1 个文件, default_workspace_5x5_no_all_app.xml
这样的好处是你可以自定义不同的布局文件加载内容，上面的配置含义简单说一下，分别是最小宽度、最小高度、布局的行和列、文件夹中布局行和列、图标大小、图标文字大小、HotSeat 个数，加载的布局文件
在 InvariantDeviceProfile() 判断是否需要加载 Tablet_no_all_app profile
packages\apps\Launcher3\src\com\android\launcher3\InvariantDeviceProfile.java
import android.util.Log;
public InvariantDeviceProfile(Context context) {
float minWidthDps;
float minHeightDps;
private String initGrid(Context context, String gridName) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
DisplayMetrics dm = new DisplayMetrics();
display.getMetrics(dm);
Point smallestSize = new Point();
Point largestSize = new Point();
display.getCurrentSizeRange(smallestSize, largestSize);
// This guarantees that width < height
/*float*/ minWidthDps = Utilities.dpiFromPx(Math.min(smallestSize.x, smallestSize.y), dm);
/*float*/ minHeightDps = Utilities.dpiFromPx(Math.min(largestSize.x, largestSize.y), dm);
Log.i("Launcher3.profiles", "orignalminWidthDps="+minWidthDps + " orignalminHeightDps="+minHeightDps);
//add for load no_all_app xml
if (LauncherAppState.isDisableAllApps()) {
Log.e("Launcher3.profiles", "load no all app profiles");
//对应 device_profiles.xml 中 Tablet_no_all_app 的值
minWidthDps = 380.0f;
minHeightDps = 590.0f;
}
.....
}
3、去除 allAppsButton
packages\apps\Launcher3\src\com\android\launcher3\Hotseat.java
将 resetLayout() 中 FeatureFlags.NO_ALL_APPS_ICON 替换为 LauncherAppState.isDisableAllApps()
public void resetLayout(boolean hasVerticalHotseat) {
removeAllViewsInLayout();
mHasVerticalHotseat = hasVerticalHotseat;
InvariantDeviceProfile idp = mActivity.getDeviceProfile().inv;
if (hasVerticalHotseat) {
setGridSize(1, idp.numHotseatIcons);
} else {
setGridSize(idp.numHotseatIcons, 1);
}
///add for check is need allappbutton
if (!LauncherAppState.isDisableAllApps()) {
addAllAppButton(idp.numHotseatIcons);
}
}
4、将 AllAppsContainerView 中的图标加载到 Workspace
packages\apps\Launcher3\src\com\android\launcher3\model\LoaderTask.java
run() 中增加判断，添加 verifyApplications(), 修改 InstallShortcutReceiver 中 PendingInstallShortcutInfo 为 public
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CancellationException;
import java.util.function.Supplier;
import android.util.Pair;
public void run() {
synchronized (this) {
// Skip fast if we are already stopped.
if (mStopped) {
return;
}
}
....
// second step
TraceHelper.partitionSection(TAG, "step 2.1: loading all apps");
loadAllApps();
//add for load all app on workspace
if (LauncherAppState.isDisableAllApps()) {
android.util.Log.e("Launcher3", "verifyApplications()");
verifyApplications();
}
....
}
//add for load all app on workspace
private void verifyApplications() {
final Context context = mApp.getContext();
ArrayList<Pair<ItemInfo, Object>> installQueue = new ArrayList<>();
final List<UserHandle> profiles = mUserManager.getUserProfiles();
for (UserHandle user : profiles) {
final List<LauncherActivityInfo> apps = mLauncherApps.getActivityList(null, user);
ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo> added = new ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo>();
synchronized (this) {
for (LauncherActivityInfo app : apps) {
InstallShortcutReceiver.PendingInstallShortcutInfo pendingInstallShortcutInfo = new InstallShortcutReceiver.PendingInstallShortcutInfo(app, context);
added.add(pendingInstallShortcutInfo);
installQueue.add(pendingInstallShortcutInfo.getItemInfo());
}
}
if (!added.isEmpty()) {
mApp.getModel().addAndBindAddedWorkspaceItems(installQueue);
}
}
}
packages\apps\Launcher3\src\com\android\launcher3\model\BaseModelUpdateTask.java
注释 run() 中的 return
@Override
public final void run() {
if (!mModel.isModelLoaded()) {
if (DEBUG_TASKS) {
Log.d(TAG, "Ignoring model task since loader is pending=" + this);
}
// Loader has not yet run.
//annotaion for load all app on workspace
// return;
}
execute(mApp, mDataModel, mAllAppsList);
}
5、新安装的 app 自动添加图标到 Workspace
packages\apps\Launcher3\src\com\android\launcher3\model\PackageUpdatedTask.java
execute() 中增加判断，添加 updateToWorkSpace()
import android.content.pm.LauncherActivityInfo;
import android.util.Pair;
public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList appsList) {
....
final ArrayList<AppInfo> addedOrModified = new ArrayList<>();
addedOrModified.addAll(appsList.added);
//add for load new install app on workspace
if (LauncherAppState.isDisableAllApps()) {
android.util.Log.e("cczLauncher3", "updateToWorkSpace()");
updateToWorkSpace(context, app, appsList);
}
...
}
//add for load new install app on workspace
public void updateToWorkSpace(Context context, LauncherAppState app , AllAppsList appsList){
ArrayList<Pair<ItemInfo, Object>> installQueue = new ArrayList<>();
final List<UserHandle> profiles = UserManagerCompat.getInstance(context).getUserProfiles();
ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo> added
= new ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo>();
for (UserHandle user : profiles) {
final List<LauncherActivityInfo> apps = LauncherAppsCompat.getInstance(context).getActivityList(null, user);
synchronized (this) {
for (LauncherActivityInfo info : apps) {
for (AppInfo appInfo : appsList.added) {
if(info.getComponentName().equals(appInfo.componentName)){
InstallShortcutReceiver.PendingInstallShortcutInfo mPendingInstallShortcutInfo
= new InstallShortcutReceiver.PendingInstallShortcutInfo(info,context);
added.add(mPendingInstallShortcutInfo);
installQueue.add(mPendingInstallShortcutInfo.getItemInfo());
}
}
}
}
}
if (!added.isEmpty()) {
app.getModel().addAndBindAddedWorkspaceItems(installQueue);
}
}
6、替换 Workspace 图标长按删除选项为取消
packages\apps\Launcher3\src\com\android\launcher3\DeleteDropTarget.java
在 setTextBasedOnDragSource() 、setControlTypeBasedOnDragSource()、onAccessibilityDrop() 中分别增加判断是否需要删除图标
private void setTextBasedOnDragSource(ItemInfo item) {
if (!TextUtils.isEmpty(mText)) {
mText = getResources().getString(item.id != ItemInfo.NO_ID
? R.string.remove_drop_target_label
: android.R.string.cancel);
//add for hide deletedroptarget
if (LauncherAppState.isDisableAllApps()) {
android.util.Log.e("Launcher3", "hide delete drop target");
mText = getResources().getString(isCanDrop(item)
? R.string.remove_drop_target_label
: android.R.string.cancel);
}
requestLayout();
}
}
private void setControlTypeBasedOnDragSource(ItemInfo item) {
mControlType = item.id != ItemInfo.NO_ID ? ControlType.REMOVE_TARGET
: ControlType.CANCEL_TARGET;
//add for hide deletedroptarget [S]
if (LauncherAppState.isDisableAllApps()) {
mControlType = isCanDrop(item) ? ControlType.REMOVE_TARGET
: ControlType.CANCEL_TARGET;
}
}
public void onAccessibilityDrop(View view, ItemInfo item) {
// Remove the item from launcher and the db, we can ignore the containerInfo in this call
// because we already remove the drag view from the folder (if the drag originated from
// a folder) in Folder.beginDrag()
//add if juge is need remove item from workspace
if (!LauncherAppState.isDisableAllApps() || isCanDrop(item)) {
mLauncher.removeItem(view, item, true /* deleteFromDb */);
mLauncher.getWorkspace().stripEmptyScreens();
mLauncher.getDragLayer()
.announceForAccessibility(getContext().getString(R.string.item_removed));
}
}
private boolean isCanDrop(ItemInfo item){
return !(item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
item.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER);
}
在 completeDrop() 中增加判断是否需要显示 Snackbar
@Override
public void completeDrop(DragObject d) {
ItemInfo item = d.dragInfo;
if (canRemove(item)) {
int itemPage = mLauncher.getWorkspace().getCurrentPage();
onAccessibilityDrop(null, item);
ModelWriter modelWriter = mLauncher.getModelWriter();
Runnable onUndoClicked = () -> {
modelWriter.abortDelete(itemPage);
mLauncher.getUserEventDispatcher().logActionOnControl(TAP, UNDO);
};
//add for don't show Snackbar
if (!LauncherAppState.isDisableAllApps()){
Snackbar.show(mLauncher, R.string.item_removed, R.string.undo,
modelWriter::commitDelete, onUndoClicked);
}
}
}
packages\apps\Launcher3\src\com\android\launcher3\dragndrop\DragController.java
drop() 中增加判断，取消当前拖拽操作
import java.util.ArrayList;
import com.android.launcher3.LauncherAppState;
import com.android.launcher3.LauncherSettings;
import com.android.launcher3.DeleteDropTarget;
private void drop(DropTarget dropTarget, Runnable flingAnimation) {
....
boolean accepted = false;
if (dropTarget != null) {
dropTarget.onDragExit(mDragObject);
if (dropTarget.acceptDrop(mDragObject)) {
if (flingAnimation != null) {
flingAnimation.run();
} else {
dropTarget.onDrop(mDragObject, mOptions);
}
accepted = true;
//add for cancel canceldroptarget handle
if (LauncherAppState.isDisableAllApps() && dropTarget instanceof DeleteDropTarget &&
isNeedCancelDrag(mDragObject.dragInfo)) {
cancelDrag();
}
}
}
...
}
private boolean isNeedCancelDrag(ItemInfo item){
return (item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
item.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER);
}
7、屏蔽上拉显示抽屉页面手势
packages\apps\Launcher3\quickstep\src\com\android\launcher3\uioverrides\touchcontrollers\PortraitStatesTouchController.java
canInterceptTouch() 中增加判断是否直接拦截
import com.android.launcher3.LauncherAppState;
@Override
protected boolean canInterceptTouch(MotionEvent ev) {
//add for forbidden workspace drag change GradientView alph
if (LauncherAppState.isDisableAllApps()){
android.util.Log.e("Launcher3", "canInterceptTouch()");
return false;
}
if (mCurrentAnimation != null) {
if (mFinishFastOnSecondTouch) {
// TODO: Animate to finish instead.
mCurrentAnimation.skipToEnd();
}
AllAppsTransitionController allAppsController = mLauncher.getAllAppsController();
if (ev.getY() >= allAppsController.getShiftRange() * allAppsController.getProgress()) {
// If we are already animating from a previous state, we can intercept as long as
// the touch is below the current all apps progress (to allow for double swipe).
return true;
}
// Otherwise, make sure everything is settled and don't intercept so they can scroll
// recents, dismiss a task, etc.
if (mAtomicAnim != null) {
mAtomicAnim.end();
}
return false;
}
if (mLauncher.isInState(ALL_APPS)) {
// In all-apps only listen if the container cannot scroll itself
if (!mLauncher.getAppsView().shouldContainerScroll(ev)) {
return false;
}
} else if (mLauncher.isInState(OVERVIEW)) {
if (!mOverviewPortraitStateTouchHelper.canInterceptTouch(ev)) {
return false;
}
} else {
// If we are swiping to all apps instead of overview, allow it from anywhere.
boolean interceptAnywhere = mLauncher.isInState(NORMAL) && !mAllowDragToOverview;
// For all other states, only listen if the event originated below the hotseat height
if (!interceptAnywhere && !isTouchOverHotseat(mLauncher, ev)) {
return false;
}
}
if (AbstractFloatingView.getTopOpenViewWithType(mLauncher, TYPE_ACCESSIBLE) != null) {
return false;
}
return true;
}
8、修改页面指示线为圆点
packages\apps\Launcher3\res\layout\launcher.xml
WorkspacePageIndicator 改为 PageIndicatorDots
<com.android.launcher3.pageindicators.PageIndicatorDots
android:id="@+id/page_indicator"
android:layout_width="match_parent"
android:layout_height="4dp"
android:layout_gravity="bottom|center_horizontal"
android:theme="@style/HomeScreenElementTheme" />
packages\apps\Launcher3\src\com\android\launcher3\Workspace.java
import com.android.launcher3.pageindicators.PageIndicatorDots;
// public class Workspace extends PagedView<WorkspacePageIndicator>
public class Workspace extends PagedView<PageIndicatorDots>
implements DropTarget, DragSource, View.OnTouchListener,
DragController.DragListener, Insettable, LauncherStateManager.StateHandler,
WorkspaceLayoutManager {
packages\apps\Launcher3\src\com\android\launcher3\pageindicators\PageIndicatorDots.java
增加 PageIndicatorDots 继承 Insettable，复写setInsets(), 调整圆点的位置
public class PageIndicatorDots extends View implements PageIndicator, Insettable {
// add for change WorkspacePageIndicator line to dot
@Override
public void setInsets(Rect insets) {
DeviceProfile grid = mLauncher.getDeviceProfile();
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
if (grid.isVerticalBarLayout()) {
Rect padding = grid.workspacePadding;
lp.leftMargin = padding.left + grid.workspaceCellPaddingXPx;
lp.rightMargin = padding.right + grid.workspaceCellPaddingXPx;
lp.bottomMargin = padding.bottom;
} else {
lp.leftMargin = lp.rightMargin = 0;
lp.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
lp.bottomMargin = grid.hotseatBarSizePx + insets.bottom;
}
setLayoutParams(lp);
}
/**
* Pauses all currently running animations.
*/
public void pauseAnimations() {
stopAllAnimations();
}
/**
* Force-ends all currently running or paused animations.
*/
public void skipAnimationsToEnd() {
stopAllAnimations();
}
@Override
public void setScroll(int currentScroll, int totalScroll) {
if (mNumPages > 1) {
if (mIsRtl) {
currentScroll = totalScroll - currentScroll;
}
int scrollPerPage = totalScroll / (mNumPages - 1);
// add for change WorkspacePageIndicator line to dot
if (scrollPerPage == 0) {
return;
}
int pageToLeft = currentScroll / scrollPerPage;
int pageToLeftScroll = pageToLeft * scrollPerPage;
int pageToRightScroll = pageToLeftScroll + scrollPerPage;
...
}
packages\apps\Launcher3\src\com\android\launcher3\states\SpringLoadedState.java
注释 setShouldAutoHide()，避免长按 workSpace 时发生崩溃
@Override
public void onStateEnabled(Launcher launcher) {
Workspace ws = launcher.getWorkspace();
ws.showPageIndicatorAtCurrentScroll();
//annotaion for WorkspacePageIndicator line to dot
// ws.getPageIndicator().setShouldAutoHide(false);
// Prevent any Un/InstallShortcutReceivers from updating the db while we are
// in spring loaded mode
InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_DRAG_AND_DROP);
launcher.getRotationHelper().setCurrentStateRequest(REQUEST_LOCK);
}
@Override
public void onStateDisabled(final Launcher launcher) {
//annotaion for WorkspacePageIndicator line to dot
// launcher.getWorkspace().getPageIndicator().setShouldAutoHide(true);
// Re-enable any Un/InstallShortcutReceiver and now process any queued items
InstallShortcutReceiver.disableAndFlushInstallQueue(
InstallShortcutReceiver.FLAG_DRAG_AND_DROP, launcher);
}
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