Android 静默安装和卸载

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一. 条件

系统签名

需要放到 /system/app里作为系统app

二. 适用环境

机顶盒开发，系统开发，车机开发，智能设备开发。

三. 步骤

1. 在 AndroidManifest.xml 中

1.1. 在清单文件 AndroidManifest.xml 添加 android.uid.system 声明为系统应用。
1.2. 权限
java <uses-permission android:name="android.permission.INSTALL_PACKAGES" /> <uses-permission android:name="android.permission.DELETE_PACKAGES" /> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /> 再添加读写权限这个可以实现安装时读取路径 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
1.3 总配置步骤图

2. 代码部分 (两种方法都可以实现，现在项目选择了第二种)

方法一

之前公司开发时机器是api 17 ，获取了系统里pm的代码通过aidl实现加反射实现这个方法也是比较正规的做法
去你们系统的源码里找到android.content.pm把里面的代码拷拷出来看图这几个就够了。

代码段

 安装 public void installApp(final String path, final String packageNames){    File apkFile = new File(path);       /* 当前app无法访问外置sd卡文件，exists()会为false所以直接抛异常最好     if(!apkFile.exists()){           sendBroadcastMsg(packageNames,false,"路径错误");           return;      }*/       try {           Class<?> clazz = Class.forName("android.os.ServiceManager");           Method method_getService = clazz.getMethod("getService", String.class);          IBinder bind = (IBinder) method_getService.invoke(null, "package");           IPackageManager iPm = IPackageManager.Stub.asInterface(bind);           iPm.installPackage(Uri.fromFile(apkFile), new IPackageInstallObserver.Stub(){               @Override               public void packageInstalled(String packageName, int returnCode) throws RemoteException {               }           }, 2, apkFile.getName());       } catch (Exception e) {           sendBroadcastMsg(packageNames,false,"安装异常");           e.printStackTrace();       }   } 卸载 public void uninstallApp(String packageName){       try {           Class<?> clazz = Class.forName("android.os.ServiceManager");           Method method_getService = clazz.getMethod("getService",String.class);           IBinder bind = (IBinder) method_getService.invoke(null, "package");           IPackageManager iPm = IPackageManager.Stub.asInterface(bind);           iPm.deletePackageAsUser(packageName,null,0,2);           System.out.println("=================>>卸载成功");       } catch (Exception e) {           e.printStackTrace();           System.out.println("=================>>卸载失败");       }   }

方法二 (兼容到6.0，6.0以上没测过，现在用的是这种没一点问题兼容公司所以系统，无需AIDL)

1. rxjava版 安装如果不要rxjava可以new Thread但要记住线程里不要有刷新ui操作    private void install(final String packageName, final String filePath) {        Observable.create(new ObservableOnSubscribe<Integer>() {            @Override            public void subscribe(ObservableEmitter<Integer> e) throws Exception {                File file = new File(filePath);                if (filePath == null || filePath.length() == 0 || file == null) {                    e.onNext(0);                    return;                }                String[] args = { "pm", "install", "-r", filePath };                ProcessBuilder processBuilder = new ProcessBuilder(args);                Process process = null;                BufferedReader successResult = null;                BufferedReader errorResult = null;                StringBuilder successMsg = new StringBuilder();                StringBuilder errorMsg = new StringBuilder();                try {                    process = processBuilder.start();                    successResult = new BufferedReader(new InputStreamReader(process.getInputStream()));                    errorResult = new BufferedReader(new InputStreamReader(process.getErrorStream()));                    String s;                    while ((s = successResult.readLine()) != null) {                        successMsg.append(s);                    }                    while ((s = errorResult.readLine()) != null) {                        errorMsg.append(s);                    }                } catch (IOException e1) {                    e1.printStackTrace();                } finally {                    try {                        if (successResult != null) {                            successResult.close();                        }                        if (errorResult != null) {                            errorResult.close();                        }                    } catch (IOException e1) {                        e1.printStackTrace();                    }                    if (process != null) {                        process.destroy();                    }                }      if (successMsg.toString().contains("Success") || successMsg.toString().contains("success")) {                    e.onNext(2);                } else {                    e.onNext(1);                }            }        }).subscribeOn(Schedulers.newThread())                .observeOn(AndroidSchedulers.mainThread())                .subscribe(new Observer<Integer>() {                    @Override                    public void onSubscribe(Disposable d) {                    }                    @Override                    public void onNext(Integer value) {                        if (value==2) {                             //安装成功                        } else {                             //安装错误                        }                    }                    @Override                    public void onError(Throwable e) {                       //安装错误                    }                    @Override                    public void onComplete() {                    }                });}2.卸载    private void uninstall(String packageName) {        try {            PackageManager pm = context.getPackageManager();            Method[] methods = pm!=null?pm.getClass().getDeclaredMethods():null;            Method mDel = null;            if (methods != null && methods.length>0) {                for (Method method : methods) {                    if (method.getName().toString().equals("deletePackage")) {                        mDel = method;                        break;                    }                }            }            if (mDel != null) {                mDel.setAccessible(true);                mDel.invoke(pm,packageName,null,0);            }        } catch (Exception e) {            e.printStackTrace();        }    }