首先增加权限 ：

      <!– 以下是静默安装apk所需要到权限 –>          <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.CLEAR_APP_USER_DATA” />            <uses-permission android:name=“android.permission.READ_PHONE_STATE” />    

主要实现代码如下 ：

      /**            * 软件静默安装            * @param apkAbsolutePath apk文件所在路径            * @return 安装结果:获取到的result值<br>            *             * 如果安装成功的话是“            * pkg: /data/local/tmp/Calculator.apk  /nSuccess”，<br>            * 如果是失败的话，则没有结尾的“Success”。            */            public String silentInstall(String apkAbsolutePath) {                String[] args = { “pm”, “install”, “-r”, apkAbsolutePath };                String result = “”;                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”.getBytes());                    inIs = process.getInputStream();                  while ((read = inIs.read()) != -1) {                        baos.write(read);                  }                  byte[] data = baos.toByteArray();                    result = new String(data);                } catch (IOException e) {                    e.printStackTrace();              } catch (Exception e) {                    e.printStackTrace();              } finally {                    try {                        if (errIs != null) {                            errIs.close();                      }                      if (inIs != null) {                            inIs.close();                      }                  } catch (IOException e) {                        e.printStackTrace();                  }                  if (process != null) {                        process.destroy();                  }              }              return result;            }