【Android應用開發】-（18）靜默方式實現大量安裝卸載應用程式

     前段時間做了一個大量安裝卸載應用程式的小應用，由於安裝卸載應用程式的部分API是隱藏的，所以必須在ubuntu下下載Android系統源碼，並編譯之後使用MM命令編譯產生APK檔案，其實也難。思路是這樣的，在XX/packages/apps目錄下有一個PackageInstaller的應用程式，Android機器中安裝卸載都是由這個應用程式完成的。但是它沒有大量安裝和卸載的功能，如果要在自己的應用程式中添加大量安裝和卸載的功能，其實很簡單，只需要參考PakcageInstaller裡面的安裝卸載代碼加個迴圈就可以了。但值得注意的是在編譯的過程中必須複製PackageInstaller裡面的Android.mk檔案，修改檔案為工程目錄名。好了，廢話不再多說，下面是關鍵代碼

   1、 Android.mk檔案

LOCAL_PATH:= $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(call all-subdir-java-files)LOCAL_PACKAGE_NAME := PackageInstallerLOCAL_CERTIFICATE := platforminclude $(BUILD_PACKAGE)

   2、PakcageInstaller.java檔案（關鍵代碼）

package cn.ceadic.apkmgr;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import android.content.Context;import android.content.Intent;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.content.pm.PackageManager.NameNotFoundException;import android.net.Uri;import android.util.Log;import android.content.pm.IPackageInstallObserver;import android.content.pm.IPackageDeleteObserver;import android.os.FileUtils;public class PackageInstaller {private File mTmpFile;private final String TMP_FILE_NAME = "tmpCopy.apk";private final static String TAG = "PackInstaller";private Context mContext;public PackageInstaller(Context context) {mContext = context;}public void install(String path,String packageName){ Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(new File(path)), "application/vnd.android.package-archive"); mContext.startActivity(intent);}public void instatllBatch(String path, String packageName) {Log.i(TAG, "path=" + path);int installFlags = 0;PackageManager pm = mContext.getPackageManager();try {PackageInfo pi = pm.getPackageInfo(packageName,PackageManager.GET_UNINSTALLED_PACKAGES);if (pi != null) {installFlags |= PackageManager.INSTALL_REPLACE_EXISTING;}} catch (NameNotFoundException e) {}if ((installFlags & PackageManager.INSTALL_REPLACE_EXISTING) != 0) {Log.w(TAG, "Replacing package:" + packageName);}// Create temp file before invoking install apimTmpFile = createTempPackageFile(path);if (mTmpFile == null) {// Message msg = mHandler.obtainMessage(INSTALL_COMPLETE);// msg.arg1 = PackageManager.INSTALL_FAILED_INSUFFICIENT_STORAGE;// mHandler.sendMessage(msg);return;}Uri mPackageURI = Uri.parse("file://" + mTmpFile.getPath());String installerPackageName = mContext.getIntent().getStringExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME);PackageInstallObserver observer = new PackageInstallObserver();pm.installPackage(mPackageURI, observer, installFlags,installerPackageName);}private File createTempPackageFile(String filePath) {File tmpPackageFile = mContext.getFileStreamPath(TMP_FILE_NAME);if (tmpPackageFile == null) {Log.w(TAG, "Failed to create temp file");return null;}if (tmpPackageFile.exists()) {tmpPackageFile.delete();}// Open file to make it world readableFileOutputStream fos;try {fos = openFileOutput(TMP_FILE_NAME, MODE_WORLD_READABLE);} catch (FileNotFoundException e1) {Log.e(TAG, "Error opening file " + TMP_FILE_NAME);return null;}try {fos.close();} catch (IOException e) {Log.e(TAG, "Error opening file " + TMP_FILE_NAME);return null;}File srcPackageFile = new File(filePath);if (!FileUtils.copyFile(srcPackageFile, tmpPackageFile)) {Log.w(TAG, "Failed to make copy of file: " + srcPackageFile);return null;}return tmpPackageFile;}private class PackageInstallObserver extends IPackageInstallObserver.Stub {public void packageInstalled(String packageName, int returnCode) {// Message msg = mHandler.obtainMessage(INSTALL_COMPLETE);// msg.arg1 = returnCode;// mHandler.sendMessage(msg);Log.i(TAG, "====INSTALL_COMPLETE");}}private class PackageDeleteObserver extends IPackageDeleteObserver.Stub {        public void packageDeleted(boolean succeeded) {//            Message msg = mHandler.obtainMessage(UNINSTALL_COMPLETE);//            msg.arg1 = succeeded?SUCCEEDED:FAILED;//            mHandler.sendMessage(msg);            Log.i(TAG, "====UNINSTALL_COMPLETE");        }    }        public void uninstall(String packageName){    Uri packageURI = Uri.parse("package:" + packageName);Intent uninstallIntent = new Intent(Intent.ACTION_DELETE,packageURI);mContext.startActivity(uninstallIntent);}public void uninstallBatch(String packageName) {    PackageDeleteObserver observer = new PackageDeleteObserver();        mContext.getPackageManager().deletePackage(packageName, observer, 0);}}

   3、別忘記添加許可權

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.INSTALL_PACKAGES" /><uses-permission android:name="android.permission.DELETE_PACKAGES" /><uses-permission android:name="android.permission.CLEAR_APP_CACHE" /><uses-permission android:name="android.permission.READ_PHONE_STATE" /><uses-permission android:name="android.permission.CLEAR_APP_USER_DATA" />

以上代碼在Android2.1的SDK中編譯通過，並正確大量安裝卸載應用程式