Android 静默安装和静默卸载实现

静默安装和卸载都是有PackageManager来处理的,我直接在CustomizedService.java类里实现这个方法,其他的文件我就不一一列出了.如下是静默卸载和安装接口silentUninstallPackage和silentInstallPackage,这两个接口都可以做成带有返回值的接口,静默卸载接口我觉得带有返回值意义不大,所以我就只做了一个带返回值的静默安装接口

import android.content.pm.PackageManager;
import android.content.pm.IPackageDeleteObserver;
import android.content.pm.PackageManager;
import android.content.pm.IPackageInstallObserver;
import android.app.PackageInstallObserver;
import android.content.pm.VerificationParams;
import android.content.pm.IPackageManager;   //import这些类
import android.widget.Toast;   

    private static final int INSTALL_SUCCEED = 8;
    private final Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case INSTALL_SUCCEED:
                     Toast.makeText(mContext,"应用已安装成功!",Toast.LENGTH_LONG).show();
            }

        }
    };

    class PackageDeleteObserver extends IPackageDeleteObserver.Stub {
        public void packageDeleted(String packageName, int returnCode) {}
    }

    /*
     *   静默卸载接口
     */
    public void silentUninstallPackage (String packageName) {
        long jh = Binder.clearCallingIdentity();
        Slog.d("lei","silentUninstallPackage start = "+ packageName);
        PackageDeleteObserver observer = new PackageDeleteObserver();
        mContext.getPackageManager().deletePackage(packageName, observer,PackageManager.DELETE_ALL_USERS);
        Binder.restoreCallingIdentity(jh);
    }

    /*
     *  静默安装接口
     */
    public int silentInstallPackage(String PackagePath) {
       Slog.d("lei","silentInstallPackage start = "+ PackagePath);
       long jh = Binder.clearCallingIdentity();
       final Uri apkURI = Uri.fromFile(new File(PackagePath));
       final int installFlags = PackageManager.INSTALL_ALL_USERS | PackageManager.INSTALL_REPLACE_EXISTING;
        LocalPackageInstallObserver obs = new LocalPackageInstallObserver();
       try {
            VerificationParams verificationParams = new VerificationParams(apkURI,null, null,-1, null);
            IPackageManager mPm = IPackageManager.Stub.asInterface(ServiceManager.getService("package"));
            mPm.installPackageAsUser(PackagePath, obs.getBinder(), installFlags,null, verificationParams, null, 0);
            synchronized (obs) {
                while (!obs.finished) {
                    try {
                        obs.wait();
                    } catch (InterruptedException e) {
                    }
                }
                if (obs.result == PackageManager.INSTALL_SUCCEEDED) {
                    Slog.d("lei","success");
                    mHandler.sendEmptyMessage(INSTALL_SUCCEED);
                } else {
                    Slog.d("lei","failure");
                }
            }

        } catch (RemoteException e) {
        }finally{
            Binder.restoreCallingIdentity(jh);
        }
        return obs.result;
    }

   class LocalPackageInstallObserver extends PackageInstallObserver {
        boolean finished;
        int result;
        String extraPermission;
        String extraPackage;

        @Override
        public void onPackageInstalled(String name, int status, String msg, Bundle extras) {
           synchronized (this) {
                finished = true;
                result = status;
                if (status == PackageManager.INSTALL_FAILED_DUPLICATE_PERMISSION) {
                    extraPermission = extras.getString(
                            PackageManager.EXTRA_FAILURE_EXISTING_PERMISSION);
                    extraPackage = extras.getString(
                            PackageManager.EXTRA_FAILURE_EXISTING_PACKAGE);
                }
                notifyAll();
            }

         }
     }