转载请注明出处：http://blog.csdn.net/droyon/article/details/39892619

一、应用标题描写叙述。

1、应用程序版本号。

mAppVersion.setText(getActivity().getString(R.string.version_text,//版本号 
    
     %1$s
                        String.valueOf(pkgInfo.versionName))

二、强制停止、停用/启用/卸载。

1、强制停止。

不可点击情况：1、应用含有设备文件、2、当前应用已停止。

点击操作逻辑：

ActivityManager am = (ActivityManager)getActivity().getSystemService(                Context.ACTIVITY_SERVICE);        am.forceStopPackage(pkgName);        mState.invalidatePackage(pkgName);        ApplicationsState.AppEntry newEnt = mState.getEntry(pkgName);        if (newEnt != null) {            mAppEntry = newEnt;        }        checkForceStop();

2、停用/启用/卸载。

private void initUninstallButtons() {        mUpdatedSysApp = (mAppEntry.info.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;// 有些系统应用是能够更新的，假设用户自己下载了一个系统的应用来更新了原来的，          // 它就不是系统应用啦，这个就是推断这样的情况的//FLAG_UPDATED_SYSTEM_APP就是一个可升级的系统应用啦，但假设用户把它升级了。那么。就应该把它当成是用户的应用        boolean enabled = true;        if (mUpdatedSysApp) {//表示是系统程序，但用户更新过，也算是用户安装的程序            mUninstallButton.setText(R.string.app_factory_reset);//卸载更新            boolean specialDisable = false;            if ((mAppEntry.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {                specialDisable = handleDisableable(mSpecialDisableButton);                mSpecialDisableButton.setOnClickListener(this);            }            mMoreControlButtons.setVisibility(specialDisable ? View.VISIBLE : View.GONE);        } else {            mMoreControlButtons.setVisibility(View.GONE);            if ((mAppEntry.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {                enabled = handleDisableable(mUninstallButton);            } else if ((mPackageInfo.applicationInfo.flags                    & ApplicationInfo.FLAG_INSTALLED) == 0                    && mUserManager.getUsers().size() >= 2) {                // When we have multiple users, there is a separate menu                // to uninstall for all users.                mUninstallButton.setText(R.string.uninstall_text);                enabled = false;            } else {                mUninstallButton.setText(R.string.uninstall_text);            }        }        // If this is a device admin, it can't be uninstall or disabled.        // We do this here so the text of the button is still set correctly.        if (mDpm.packageHasActiveAdmins(mPackageInfo.packageName)) {            enabled = false;        }        mUninstallButton.setEnabled(enabled);        if (enabled) {            // Register listener            mUninstallButton.setOnClickListener(this);        }    }

1、是否是用户更新的系统程序

2、假设是。显示三个button。第一行“强制停止”，“卸载更新”。第二行“null”。“停用/启用”。

假设否，显示两个button。第一行“强制停止”。“停用/启用”

假设是用户更新的系统程序。则：

否则：

显示停用、启用还是卸载？

假设是系统应用。则    在【mAppEntry.info.enabled  || mHomePackages.contains(mAppEntry.info.packageName) || isThisASystemPackage()】时显示“停用”    否则显示“启用”假设是非系统应用显示卸载。

button是否可点击？

不可可点击的情况：应用含有系统签名 或者 应用中含有设备文件。

点击逻辑

return new AlertDialog.Builder(getActivity())                    .setTitle(getActivity().getText(R.string.app_factory_reset_dlg_title))//要卸载更新吗？                    .setIconAttribute(android.R.attr.alertDialogIcon)                    .setMessage(getActivity().getText(R.string.app_factory_reset_dlg_text))//系统将会卸载此 Android 系统应用的全部相关更新。                    .setPositiveButton(R.string.dlg_ok,                            new DialogInterface.OnClickListener() {                        public void onClick(DialogInterface dialog, int which) {                            // Clear user data here                            getOwner().uninstallPkg(getOwner().mAppEntry.info.packageName,                                    false, false);                        }                    })                    .setNegativeButton(R.string.dlg_cancel, null)                    .create();点击处理逻辑               if ((mAppEntry.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {                    if (mAppEntry.info.enabled) {                        showDialogInner(DLG_DISABLE, 0);//停用                    } else {                        new DisableChanger(this, mAppEntry.info,                                PackageManager.COMPONENT_ENABLED_STATE_DEFAULT)                        .execute((Object)null);//启用                    }                } else if ((mAppEntry.info.flags & ApplicationInfo.FLAG_INSTALLED) == 0) {                    uninstallPkg(packageName, true, false);//卸载                } else {                    uninstallPkg(packageName, false, false);                }

3、显示通知。

String packageName = mAppEntry.info.packageName;        INotificationManager nm = INotificationManager.Stub.asInterface(                ServiceManager.getService(Context.NOTIFICATION_SERVICE));        try {            final boolean enable = mNotificationSwitch.isChecked();            nm.setNotificationsEnabledForPackage(packageName, mAppEntry.info.uid, enabled);        } catch (android.os.RemoteException ex) {            mNotificationSwitch.setChecked(!enabled); // revert        }

三、存储。

1、总计：mAppEntry.size2、应用：codeSize = mAppEntry.codeSize；if (Environment.isExternalStorageEmulated()) {     codeSize += mAppEntry.externalCodeSize;}3、USB存储（应用） = mAppEntry.externalCodeSize4、数据 =long dataSize = mAppEntry.dataSize;if (Environment.isExternalStorageEmulated()) {     dataSize +=  mAppEntry.externalDataSize;}5、SD卡；mAppEntry.externalDataSize5.1、移动sd卡。初始化private void initMoveButton() {        if (Environment.isExternalStorageEmulated()) {            mMoveAppButton.setVisibility(View.INVISIBLE);            return;        }        boolean dataOnly = false;        dataOnly = (mPackageInfo == null) && (mAppEntry != null);        boolean moveDisable = true;        if (dataOnly) {            mMoveAppButton.setText(R.string.move_app);        } else if ((mAppEntry.info.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) {            mMoveAppButton.setText(R.string.move_app_to_internal);            // Always let apps move to internal storage from sdcard.            moveDisable = false;        } else {            mMoveAppButton.setText(R.string.move_app_to_sdcard);            mCanBeOnSdCardChecker.init();            moveDisable = !mCanBeOnSdCardChecker.check(mAppEntry.info);        }        if (moveDisable) {            mMoveAppButton.setEnabled(false);        } else {            mMoveAppButton.setOnClickListener(this);            mMoveAppButton.setEnabled(true);        }    }点击逻辑if (mPackageMoveObserver == null) {                mPackageMoveObserver = new PackageMoveObserver();            }            int moveFlags = (mAppEntry.info.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0 ?

PackageManager.MOVE_INTERNAL : PackageManager.MOVE_EXTERNAL_MEDIA; mMoveInProgress = true; refreshButtons(); mPm.movePackage(mAppEntry.info.packageName, mPackageMoveObserver, moveFlags); 5.2、清楚数据。初始化： private void initDataButtons() { // If the app doesn't have its own space management UI // And it's a system app that doesn't allow clearing user data or is an active admin // Then disable the Clear Data button. if (mAppEntry.info.manageSpaceActivityName == null && ((mAppEntry.info.flags&(ApplicationInfo.FLAG_SYSTEM | ApplicationInfo.FLAG_ALLOW_CLEAR_USER_DATA)) == ApplicationInfo.FLAG_SYSTEM || mDpm.packageHasActiveAdmins(mPackageInfo.packageName))) { mClearDataButton.setText(R.string.clear_user_data_text); mClearDataButton.setEnabled(false); mCanClearData = false; } else { if (mAppEntry.info.manageSpaceActivityName != null) { mClearDataButton.setText(R.string.manage_space_text); } else { mClearDataButton.setText(R.string.clear_user_data_text); } mClearDataButton.setOnClickListener(this); } } 点击逻辑 private void initiateClearUserData() { mClearDataButton.setEnabled(false); // Invoke uninstall or clear user data based on sysPackage String packageName = mAppEntry.info.packageName; Log.i(TAG, "Clearing user data for package : " + packageName); if (mClearDataObserver == null) { mClearDataObserver = new ClearUserDataObserver(); } ActivityManager am = (ActivityManager) getActivity().getSystemService(Context.ACTIVITY_SERVICE); boolean res = am.clearApplicationUserData(packageName, mClearDataObserver); if (!res) { // Clearing data failed for some obscure reason. Just log error for now Log.i(TAG, "Couldnt clear application user data for package:"+packageName); showDialogInner(DLG_CANNOT_CLEAR_DATA, 0); } else { mClearDataButton.setText(R.string.recompute_size); } }

四、缓存。

1、缓存：mAppEntry.cacheSize + mAppEntry.externalCacheSize;2、点击清楚缓存if (mClearCacheObserver == null) {                mClearCacheObserver = new ClearCacheObserver();            }            mPm.deleteApplicationCacheFiles(packageName, mClearCacheObserver);

五、默认启动。

1、默认启动得到优先设置项mPm.getPreferredActivities(intentList, prefActList, packageName);是否含有usb默认项设置：hasUsbDefaults = mUsbManager.hasDefaults(packageName, UserHandle.myUserId());是否绑定权限：boolean hasBindAppWidgetPermission =                mAppWidgetManager.hasBindAppWidgetPermission(mAppEntry.info.packageName);2、清楚默认设置	    mPm.clearPackagePreferredActivities(packageName);            try {                mUsbManager.clearDefaults(packageName, UserHandle.myUserId());            } catch (RemoteException e) {                Log.e(TAG, "mUsbManager.clearDefaults", e);            }            mAppWidgetManager.setBindAppWidgetPermission(packageName, false);            TextView autoLaunchTitleView =                    (TextView) mRootView.findViewById(R.id.auto_launch_title);//无默认设置。            TextView autoLaunchView = (TextView) mRootView.findViewById(R.id.auto_launch);            resetLaunchDefaultsUi(autoLaunchTitleView, autoLaunchView);