静默安装和卸载第三方apk

1.实现静默安装和卸载需要两个权限

<uses-permission android:name="android.permission.INSTALL_PACKAGES" />

<uses-permission android:name="android.permission.DELETE_PACKAGES" />

2.你的app需要放置在System\app或者System\priv-app目录下，也就是说要有root权限或者是系统应用才行

3.我都是选择adb命令行的方式,我看见有的博客是用反射来做的，不过我是试过了，在API25的情况下我没跑通，可能是我自己的问题。废话不多说上代码：

 （1）静默安装：

   private boolean install()
   {
     String[] args = {"pm", "install", "-r", packageUri.getPath()};
 String result = null;
 ProcessBuilder processBuilder = new ProcessBuilder(args);;
 Process process = null;
 InputStream errIs = null;
 InputStream inIs = null;
 try{
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     int read = -1;
     process = processBuilder.start();
     errIs = process.getErrorStream();
     while((read = errIs.read()) != -1){
         baos.write(read);
     }
     baos.write('\n');
     inIs = process.getInputStream();
     while((read = inIs.read()) != -1){
         baos.write(read);
     }
     byte[] data = baos.toByteArray();
     result = new String(data);
 }catch(Exception e){
     e.printStackTrace();
 }finally{
     try{
         if(errIs != null){
             errIs.close();
         }
         if(inIs != null){
             inIs.close();
         }
     }catch(Exception e){
         e.printStackTrace();
     }
     if(process != null){
         process.destroy();
     }
 }

 if(result != null && (result.endsWith("Success")||result.endsWith("Success\n")))
 {
     return true;
 }
 return false;
   }

(2)静默卸载：

 private void uninstall2() {
         String[] args = { "pm", "uninstall", "com.popcap.pvzthird" };
         String result = null;
         ProcessBuilder processBuilder = new ProcessBuilder(args);
         ;
         Process process = null;
         InputStream errIs = null;
         InputStream inIs = null;
         try {
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             int read = -1;
             process = processBuilder.start();
             errIs = process.getErrorStream();
             while ((read = errIs.read()) != -1) {
                 baos.write(read);
             }
             baos.write('\n');
             inIs = process.getInputStream();
             while ((read = inIs.read()) != -1) {
                 baos.write(read);
             }
             byte[] data = baos.toByteArray();
             result = new String(data);
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             try {
                 if (errIs != null) {
                     errIs.close();
                 }
                 if (inIs != null) {
                     inIs.close();
                 }
             } catch (Exception e) {
                 e.printStackTrace();
             }
             if (process != null) {
                 process.destroy();
             }
         }
     }