android开发实现静默安装（root权限）

方式是将应用设置为内置的系统应用，注意事system/app目录下面，采用copy2SystemApp()方法就可以，注意chmod 777的权限，若是直接将apk拷贝到system/app目录，没有这个权限还是不能静默安装的。

直接贴出工具类：

public class ApkController {
    /**
     * 描述: 安装
     */
    public static 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
            return clientInstall(apkPath);
        }else{
            // 没有root权限，利用意图进行安装
            File file = new File(apkPath);
            if(!file.exists())
                return false;
            Intent intent = new Intent();
            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);
            return true;
        }
    }

    /**
     * 描述: 卸载
     */
    public static boolean uninstall(String packageName,Context context){
        if(hasRootPerssion()){
            // 有root权限，利用静默卸载实现
            return clientUninstall(packageName);
        }else{
            Uri packageURI = Uri.parse("package:" + packageName);
            Intent uninstallIntent = new Intent(Intent.ACTION_DELETE,packageURI);
            uninstallIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(uninstallIntent);
            return true;
        }
    }

    /**
     * 判断手机是否有root权限
     */
    public static boolean hasRootPerssion(){
        PrintWriter PrintWriter = null;
        Process process = null;
        try {
            process = Runtime.getRuntime().exec("su");
            PrintWriter = new PrintWriter(process.getOutputStream());
            PrintWriter.flush();
            PrintWriter.close();
            int value = process.waitFor();
            return returnResult(value);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(process!=null){
                process.destroy();
            }
        }
        return false;
    }

    /**
     * 静默安装
     */
    public static boolean clientInstall(String apkPath){
        PrintWriter PrintWriter = null;
        Process process = null;
        try {
            process = Runtime.getRuntime().exec("su");
            PrintWriter = new PrintWriter(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();
            int value = process.waitFor();
            return returnResult(value);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(process!=null){
                process.destroy();
            }
        }
        return false;
    }

    /**
     * 静默卸载
     */
    public static boolean clientUninstall(String packageName){
        PrintWriter PrintWriter = null;
        Process process = null;
        try {
            process = Runtime.getRuntime().exec("su");
            PrintWriter = new PrintWriter(process.getOutputStream());
            PrintWriter.println("LD_LIBRARY_PATH=/vendor/lib:/system/lib ");
            PrintWriter.println("pm uninstall "+packageName);
            PrintWriter.flush();
            PrintWriter.close();
            int value = process.waitFor();
            return returnResult(value);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(process!=null){
                process.destroy();
            }
        }
        return false;
    }

    /**
     * 启动app
     * com.exmaple.client/.MainActivity
     * com.exmaple.client/com.exmaple.client.MainActivity
     */
    public static boolean startApp(String packageName,String activityName){
        boolean isSuccess = false;
        String cmd = "am start -n " + packageName + "/" + activityName + " \n";
        Process process = null;
        try {
           process = Runtime.getRuntime().exec(cmd);
           int value = process.waitFor();
           return returnResult(value);
        } catch (Exception e) {
          e.printStackTrace();
        } finally{
            if(process!=null){
                process.destroy();
            }
        }
        return isSuccess;
    }
    /**
     * 将文件复制到system/app 目录
     * @param apkPath 特别注意格式：该路径不能是：/storage/emulated/0/app/QDemoTest4.apk 需要是：/sdcard/app/QDemoTest4.apk
     * @return
     */
    public static boolean copy2SystemApp(String apkPath){
        PrintWriter PrintWriter = null;
        Process process = null;
        String appName = "chetou.apk",cmd;

        try {
            process = Runtime.getRuntime().exec("su");
            PrintWriter = new PrintWriter(process.getOutputStream());
            cmd = "mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system";
            Log.e("copy2SystemApp", cmd);
            PrintWriter.println(cmd);

            cmd = "cat "+apkPath+" > /system/app/"+appName;
            Log.e("copy2SystemApp", cmd);
            PrintWriter.println(cmd);

            cmd = "chmod 777 /system/app/"+appName +" -R";
            Log.e("copy2SystemApp", cmd);
            PrintWriter.println(cmd);

            cmd = "mount -o remount,ro -t yaffs2 /dev/block/mtdblock3 /system";
            Log.e("copy2SystemApp", cmd);
            PrintWriter.println(cmd);
            PrintWriter.println("reboot");  //重启
            PrintWriter.println("exit");
            PrintWriter.flush();
            PrintWriter.close();
            int value = process.waitFor();
            return returnResult(value);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(process!=null){
                process.destroy();
            }
        }
        return false;
    }
    private static boolean returnResult(int value){
        // 代表成功
        if (value == 0) {
            return true;
        } else if (value == 1) { // 失败
            return false;
        } else { // 未知情况
            return false;
        }
    }
}