Android静默安装和静默卸载

静默顾名思义就是静静的默默地，静默安装和静默卸载的意思也就是说在后台默默地安装和卸载。

最近的一个app应用分发的项目中app下载的模块，下载完成之后，用户可以通过这个app进行安装，为了提高用户的体验，我就加入了静默安装和卸载功能，然后还加入了使用am命令启动某个Activity。

这个项目中静默的方式实现代码如下：

首先判断是否有root权限，如果有利用静默方式，否则利用意图实现app安装和卸载操作。

packagecom.example.test;

 

importjava.io.File;

importjava.io.IOException;

importjava.io.PrintWriter;

 

importandroid.content.Context;

importandroid.content.Intent;

importandroid.net.Uri;

 

/**

 * 描述: app安装操作             

 * @author 吴传龙                 

 * Email:[e-mail] 

 * QQ: 3026862225              

 * @version 创建时间: 2015年3月6日 下午3:51:14               

 * @version 最后修改时间:2015年3月6日 下午3:51:14     修改人:吴传龙     

 */

publicclass ApkController {

    /**

     * 描述: 安装

     * 修改人: 吴传龙                                             

     * 最后修改时间:2015年3月8日 下午9:07:50

     */

    publicstatic boolean install(String apkPath,Context context){

        // 先判断手机是否有root权限

        if(hasRootPerssion()){

            // 有root权限，利用静默安装实现

            returnclientInstall(apkPath);

        }else{

            // 没有root权限，利用意图进行安装

            File file = newFile(apkPath);

            if(!file.exists())

                returnfalse;

            Intent intent = newIntent();

            intent.setAction("android.intent.action.VIEW");

            intent.addCategory("android.intent.category.DEFAULT");

            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");

            context.startActivity(intent);

            returntrue;

        }

    }

     

    /**

     * 描述: 卸载

     * 修改人: 吴传龙                                             

     * 最后修改时间:2015年3月8日 下午9:07:50

     */

    publicstatic boolean uninstall(String packageName,Context context){

        if(hasRootPerssion()){

            // 有root权限，利用静默卸载实现

            returnclientUninstall(packageName);

        }else{

            Uri packageURI = Uri.parse("package:"+ packageName);

            Intent uninstallIntent = newIntent(Intent.ACTION_DELETE,packageURI);

            uninstallIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            context.startActivity(uninstallIntent);

            returntrue;

        }

    }

     

    /**

     * 判断手机是否有root权限

     */

    privatestatic boolean hasRootPerssion(){

        PrintWriter PrintWriter = null;

        Process process = null;

        try{

            process = Runtime.getRuntime().exec("su");

            PrintWriter = newPrintWriter(process.getOutputStream());

            PrintWriter.flush();

            PrintWriter.close();

            intvalue = process.waitFor(); 

            returnreturnResult(value);

        }catch(Exception e) {

            e.printStackTrace();

        }finally{

            if(process!=null){

                process.destroy();

            }

        }

        returnfalse;

    }

     

    /**

     * 静默安装

     */

    privatestatic boolean clientInstall(String apkPath){

        PrintWriter PrintWriter = null;

        Process process = null;

        try{

            process = Runtime.getRuntime().exec("su");

            PrintWriter = newPrintWriter(process.getOutputStream());

            PrintWriter.println("chmod 777 "+apkPath);

            PrintWriter.println("export LD_LIBRARY_PATH=/vendor/lib:/system/lib");

            PrintWriter.println("pm install -r "+apkPath);

//          PrintWriter.println("exit");

            PrintWriter.flush();

            PrintWriter.close();

            intvalue = process.waitFor(); 

            returnreturnResult(value);

        }catch(Exception e) {

            e.printStackTrace();

        }finally{

            if(process!=null){

                process.destroy();

            }

        }

        returnfalse;

    }

     

    /**

     * 静默卸载

     */

    privatestatic boolean clientUninstall(String packageName){

        PrintWriter PrintWriter = null;

        Process process = null;

        try{

            process = Runtime.getRuntime().exec("su");

            PrintWriter = newPrintWriter(process.getOutputStream());

            PrintWriter.println("LD_LIBRARY_PATH=/vendor/lib:/system/lib ");

            PrintWriter.println("pm uninstall "+packageName);

            PrintWriter.flush();

            PrintWriter.close();

            intvalue = process.waitFor(); 

            returnreturnResult(value);

        }catch(Exception e) {

            e.printStackTrace();

        }finally{

            if(process!=null){

                process.destroy();

            }

        }

        returnfalse;

    }

     

    /**

     * 启动app

     * com.exmaple.client/.MainActivity

     * com.exmaple.client/com.exmaple.client.MainActivity

     */

    publicstatic boolean startApp(String packageName,String activityName){

        booleanisSuccess = false;

        String cmd = "am start -n " + packageName + "/"+ activityName + " \n";

        Process process = null;

        try{

           process = Runtime.getRuntime().exec(cmd);

           intvalue = process.waitFor(); 

           returnreturnResult(value);

        }catch(Exception e) {

          e.printStackTrace();

        }finally{

            if(process!=null){

                process.destroy();

            }

        }

        returnisSuccess;

    }

     

     

    privatestatic boolean returnResult(intvalue){

        // 代表成功 

        if(value == 0) {

            returntrue;

        }elseif (value == 1) { // 失败

            returnfalse;

        }else{ // 未知情况

            returnfalse;

        } 

    }

}

packagecom.example.test;

 

importjava.io.File;

 

importandroid.support.v4.app.Fragment;

importandroid.app.Activity;

importandroid.os.Bundle;

importandroid.os.Environment;

importandroid.view.LayoutInflater;

importandroid.view.Menu;

importandroid.view.MenuItem;

importandroid.view.View;

importandroid.view.ViewGroup;

importandroid.widget.Toast;

importandroid.os.Build;

/**

 * 描述: MainActivity            

 * @author 吴传龙                 

 * Email:[e-mail] 

 * QQ: 3026862225              

 * @version 创建时间: 2015年3月9日 上午8:19:19               

 * @version 最后修改时间:2015年3月9日 上午8:19:19     修改人:吴传龙

 */

publicclass MainActivity extendsActivity {

 

    @Override

    protectedvoid onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }

 

    /**

     * 描述: 安装

     * @param          

     * 修改人: 吴传龙                                             

     * 最后修改时间:2015年3月9日 上午8:19:30

     */

    publicvoid click1(View view){

        newThread(){

            publicvoid run() {

                String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/jniTest.apk";

                if(ApkController.install(path, getApplicationContext())){

                    toast("安裝成功");

                }else{

                    toast("安裝失败");

                }

            };

        }.start();

    }

     

    /**

     * 描述: 卸载

     * @param          

     * 修改人: 吴传龙                                             

     * 最后修改时间:2015年3月9日 上午8:19:30

     */

    publicvoid click2(View view){

        newThread(){

            publicvoid run() {

                if(ApkController.uninstall("com.example.jnitest", getApplicationContext())){

                    toast("卸載成功");

                }else{

                    toast("卸載失败");

                }

            };

        }.start();

    }

     

    /**

     * 描述: 启动

     * @param          

     * 修改人: 吴传龙                                             

     * 最后修改时间:2015年3月9日 上午8:19:30

     */

    publicvoid click3(View view){

        if(ApkController.startApp("com.example.jnitest","com.example.jnitest.MainActivity")) {

            toast("啟動成功");

        }

    }

     

     

    publicvoid toast(finalString text){

        runOnUiThread(newRunnable() {

            @Override

            publicvoid run() {

                Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();;

            }

        });

    }

 

}

?

要用其他的方式实现静默方式，可以通过伪装成系统应用，这就要给app打上系统应用的签名，但是这些签名在小米等手机上是没用的，所以这里不做介绍。还有就是通过把应用放在system/app的目录下也可以实现。