android如何静默方式来安装apk

     <p>通常情况下，android是没有提供静默方式的上层接口，我们需要在android源代码下来调用这个隐藏的接口来完成静默安装。<br /> 最重要的就是参考android系统目录下的packages/apps/PackageInstaller，<br /> 当中有两个文件 PackageInstallerActivity.java,InstallAppProgress.java ,前者就是我们通常看到的带有提示对话框的安装应用程序，后者是点确定安装后调用的intent。<br /> 现提供一个静默安装的关键类，该类在android2.2下成功编译, 其中通过循环调用接口instatllBatch则可实现批量安装<br /> 当然最后的应用程序别忘记添加权限<br /> </p>    <pre class="brush:xml; toolbar: true; auto-links: false;">    <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" /></pre>    <p></p>    <pre class="brush:java; toolbar: true; auto-links: false;">package com.android.util;  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.content.pm.ApplicationInfo;  import android.content.pm.PackageParser;  import android.net.Uri;    import android.util.Log;    import android.util.DisplayMetrics;  import android.content.pm.IPackageInstallObserver;    import android.content.pm.IPackageDeleteObserver;    import android.os.FileUtils;    import android.os.Handler;  import android.os.Message;     public class PackageInstaller {       private File mTmpFile;    private final int INSTALL_COMPLETE = 1;  final static int SUCCEEDED = 1;  final static int FAILED = 0;  private final static String TAG = "PackInstaller";    private Context mContext;    private ApplicationInfo mAppInfo;  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) {    Log.i(TAG, "path=" + path);    int installFlags = 0;    Uri mPackageURI  = Uri.fromFile(new File(path));  PackageParser.Package mPkgInfo = getPackageInfo(mPackageURI);  mAppInfo =  mPkgInfo.applicationInfo;  String packageName = mAppInfo.packageName;  Log.i(TAG, "====install packageName ="+packageName);  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);    }       PackageInstallObserver observer = new PackageInstallObserver();    pm.installPackage(mPackageURI, observer, installFlags,    packageName);    }    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);       }    /*    *  Utility method to get package information for a given packageURI             */  public  PackageParser.Package getPackageInfo(Uri packageURI) {  final String archiveFilePath = packageURI.getPath();  PackageParser packageParser = new PackageParser(archiveFilePath);  File sourceFile = new File(archiveFilePath);  DisplayMetrics metrics = new DisplayMetrics();  metrics.setToDefaults();  PackageParser.Package pkg =  packageParser.parsePackage(sourceFile,  archiveFilePath, metrics, 0);   // Nuke the parser reference.  packageParser = null;  return pkg;  }  /*  * Utility method to get application information for a given packageURI  */  public   ApplicationInfo getApplicationInfo(Uri packageURI) {  final String archiveFilePath = packageURI.getPath();  PackageParser packageParser = new PackageParser(archiveFilePath);  File sourceFile = new File(archiveFilePath);  DisplayMetrics metrics = new DisplayMetrics();  metrics.setToDefaults();  PackageParser.Package pkg = packageParser.parsePackage(sourceFile, archiveFilePath, metrics, 0);  if (pkg == null) {  return null;  }  return pkg.applicationInfo;  }  private Handler mHandler = new Handler() {  public void handleMessage(Message msg) {  switch (msg.what) {  case INSTALL_COMPLETE:  if(msg.arg1 == SUCCEEDED) {     } else {}  break;  default:  break;  }  }  };  }</pre>    <p></p>