Android launcher3 -- launcher3源码1
Android launcher3 – launcher3源码1
Launcher3(J 泡在网上的日子)
launcher3源码
Launcher3源码分析系列
下载launcher3源码
使用Android Studio运行
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默认布局读取
Android launcher – launcher源码修改 2简单提及
xml布局文件
一般该文件命中都包含default_workspace字符串，只需要查一下
default_workspace_XxY.xml 桌面默认布局文件，
dw_phone_hotseat.xml 手机hotseat布局（即底部DOCK区）
dw_tablet_hotseat.xml 平板hotseat布局
dw_phone_hotseat.xml
<favorites xmlns:launcher="http://schemas.android.com/apk/res-auto/com.android.launcher3"> <resolve launcher:container="-101" launcher:screen="0" launcher:x="0" launcher:y="0" > <favorite launcher:uri="#Intent;action=android.intent.action.DIAL;end" /> <favorite launcher:uri="tel:123" /> <favorite launcher:uri="#Intent;action=android.intent.action.CALL_BUTTON;end" /> resolve> <resolve launcher:container="-101" launcher:screen="1" launcher:x="1" launcher:y="0" > <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MESSAGING;end" /> <favorite launcher:uri="sms:" /> <favorite launcher:uri="smsto:" /> <favorite launcher:uri="mms:" /> <favorite launcher:uri="mmsto:" /> resolve> <resolve launcher:container="-101" launcher:screen="3" launcher:x="3" launcher:y="0" > <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_BROWSER;end" /> <favorite launcher:uri="http://www.example.com/" /> resolve> <resolve launcher:container="-101" launcher:screen="4" launcher:x="4" launcher:y="0" > <favorite launcher:uri="#Intent;action=android.media.action.STILL_IMAGE_CAMERA;end" /> <favorite launcher:uri="#Intent;action=android.intent.action.CAMERA_BUTTON;end" /> resolve>favorites>default_workspace_4x4.xml
<favorites xmlns:launcher="http://schemas.android.com/apk/res-auto/com.android.launcher3"> <include launcher:workspace="@xml/dw_phone_hotseat" /> <resolve launcher:screen="0" launcher:x="0" launcher:y="3" > <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_EMAIL;end" /> <favorite launcher:uri="mailto:" /> resolve> <resolve launcher:screen="0" launcher:x="1" launcher:y="3" > <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_GALLERY;end" /> <favorite launcher:uri="#Intent;type=images/*;end" /> resolve> <resolve launcher:screen="0" launcher:x="3" launcher:y="3" > <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MARKET;end" /> <favorite launcher:uri="market://details?id=com.android.launcher" /> resolve>favorites>favorites中可用添加自定义：添加第一个相机，可重复创建；第二个日历
<resolve launcher:screen="0" launcher:x="2" launcher:y="3"> <favorite launcher:uri="#Intent;action=android.media.action.STILL_IMAGE_CAMERA;end" /> <favorite launcher:uri="#Intent;action=android.intent.action.CAMERA_BUTTON;end" />resolve><resolve launcher:screen="0" launcher:x="0" launcher:y="0"> <favorite launcher:className="com.android.calendar.AllInOneActivity" launcher:packageName="com.android.calendar" />resolve>xml布局文件读取
从Find in Path搜索的中代码中调用
InvariantDeviceProfile.java中
ArrayList getPredefinedDeviceProfiles() { ArrayList predefinedDeviceProfiles = new ArrayList<>(); // width, height, #rows, #columns, #folder rows, #folder columns, // iconSize, iconTextSize, #hotseat, #hotseatIconSize, defaultLayoutId. predefinedDeviceProfiles.add(new InvariantDeviceProfile("Super Short Stubby", 255, 300, 2, 3, 2, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Shorter Stubby", 255, 400, 3, 3, 3, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Short Stubby", 275, 420, 3, 4, 3, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Stubby", 255, 450, 3, 4, 3, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus S", 296, 491.33f, 4, 4, 4, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 4", 335, 567, 4, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 5", 359, 567, 4, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("Large Phone", 406, 694, 5, 5, 4, 4, 4, 64, 14.4f, 5, 56, R.xml.default_workspace_5x5)); // The tablet profile is odd in that the landscape orientation // also includes the nav bar on the side predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 7", 575, 904, 5, 6, 4, 5, 4, 72, 14.4f, 7, 60, R.xml.default_workspace_5x6)); // Larger tablet profiles always have system bars on the top & bottom predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 10", 727, 1207, 5, 6, 4, 5, 4, 76, 14.4f, 7, 64, R.xml.default_workspace_5x6)); predefinedDeviceProfiles.add(new InvariantDeviceProfile("20-inch Tablet", 1527, 2527, 7, 7, 6, 6, 4, 100, 20, 7, 72, R.xml.default_workspace_4x4)); return predefinedDeviceProfiles;} 从getPredefinedDeviceProfiles()逆向索冀
Launcher.java：
@Override
protected void onCreate(Bundle savedInstanceState)
LauncherAppState.setApplicationContext(getApplicationContext());
LauncherAppState app = LauncherAppState.getInstance();
mModel.startLoader(mWorkspace.getRestorePage());
LauncherModel.java：异步线程LoaderTas加载图标
public void startLoader(int synchronousBindPage, int loadFlags)
mLoaderTask = new LoaderTask(mApp.getContext(), loadFlags);
mLoaderTask.runBindSynchronousPage(synchronousBindPage);
sWorker.post(mLoaderTask);private class LoaderTask implements Runnable
public void run()
loadAndBindWorkspace()
loadAndBindAllApps();loadAndBindWorkspace()
loadWorkspace()
bindWorkspace(-1);loadAndBindAllApps()
loadAllApps();
updateIconCache();
LauncherProvider.java：
@Override
public boolean onCreate()
LauncherAppState.setLauncherProvider(this);/**
* Loads the default workspace based on the following priority scheme:
* 1) From the app restrictions
* 2) From a package provided by play store
* 3) From a partner configuration APK, already in the system image
* 4) The default configuration for the particular device
*/
synchronized public void loadDefaultFavoritesIfNecessary()
AutoInstallsLayout loader = createWorkspaceLoaderFromAppRestriction();
loader = getDefaultLayoutParser();
if ((mOpenHelper.loadFavorites(mOpenHelper.getWritableDatabase(), loader) <= 0) && usingExternallyProvidedLayout)
mOpenHelper.loadFavorites(mOpenHelper.getWritableDatabase(), getDefaultLayoutParser());@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
private AutoInstallsLayout createWorkspaceLoaderFromAppRestriction()
return AutoInstallsLayout.get(ctx, packageName, targetResources, mOpenHelper.mAppWidgetHost, mOpenHelper);private DefaultLayoutParser getDefaultLayoutParser()
private DefaultLayoutParser getDefaultLayoutParser() { int defaultLayout = LauncherAppState.getInstance() .getInvariantDeviceProfile().defaultLayoutId; return new DefaultLayoutParser(getContext(), mOpenHelper.mAppWidgetHost, mOpenHelper, getContext().getResources(), defaultLayout);}
LauncherAppState.java：
private LauncherAppState() //单例模式
mInvariantDeviceProfile = new InvariantDeviceProfile(sContext);public InvariantDeviceProfile getInvariantDeviceProfile()
return mInvariantDeviceProfile;
InvariantDeviceProfile.java：
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
InvariantDeviceProfile(Context context)
ArrayList closestProfiles = findClosestDeviceProfiles(minWidthDps, minHeightDps, getPredefinedDeviceProfiles());getPredefinedDeviceProfiles()
predefinedDeviceProfiles.add(new InvariantDeviceProfile(“Super Short Stubby”, 255, 300, 2, 3, 2, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4));InvariantDeviceProfile(String n, float w, float h, int r, int c, int fr, int fc, int maapc, float is, float its, float hs, float his, int dlId)
defaultLayoutId = dlId;
Launcher3基本结构图
相关布局参数
defaultLayoutId ：默认布局ID
numRows \numColumns ：workspace行列
numHotseatIcons ：DOCK区个数
hotseatAllAppsRank ：DOCK区中间AllApps图标位置
numFolderRows \numFolderColumns ：文件夹行列数
iconSize ：图标大小
iconTextSize ：workspace图标下文字大小
hotseatIconSize ：DOCK区图标大小config_workspaceDefaultScreen：默认主屏在launcher.xml布局中
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)InvariantDeviceProfile(Context context) { //。。。。。。省略 ArrayList closestProfiles = findClosestDeviceProfiles(minWidthDps, minHeightDps, getPredefinedDeviceProfiles()); InvariantDeviceProfile interpolatedDeviceProfileOut = invDistWeightedInterpolate(minWidthDps, minHeightDps, closestProfiles); InvariantDeviceProfile closestProfile = closestProfiles.get(0); numRows = closestProfile.numRows; numColumns = closestProfile.numColumns; numHotseatIcons = closestProfile.numHotseatIcons; hotseatAllAppsRank = (int) (numHotseatIcons / 2); defaultLayoutId = closestProfile.defaultLayoutId; numFolderRows = closestProfile.numFolderRows; numFolderColumns = closestProfile.numFolderColumns; minAllAppsPredictionColumns = closestProfile.minAllAppsPredictionColumns; iconSize = interpolatedDeviceProfileOut.iconSize; iconBitmapSize = Utilities.pxFromDp(iconSize, dm); iconTextSize = interpolatedDeviceProfileOut.iconTextSize; hotseatIconSize = interpolatedDeviceProfileOut.hotseatIconSize; fillResIconDpi = getLauncherIconDensity(iconBitmapSize); //。。。。。。省略} 更多相关文章
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