Android 静默安装

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.util.Log;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.InputStreamReader;

import static android.os.Process.killProcess;
import static android.os.Process.myPid;

/**
 * Created by maple on 2018/12/13 10:09
 * E-Mail Address：740917401@qq.com
 */
public class AppUpdate {
    private static String TAG = "AppUpdate";

    /**
     * 普通安装
     *
     * @author maple
     * @time 2018/12/13 10:13
     */
    public static void installApk(Context context, File file) {
        Intent intent = new Intent();
        //执行动作
        intent.setAction(Intent.ACTION_VIEW);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        //执行的数据类型
        intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
        context.startActivity(intent);
        killProcess(myPid());
    }

    /**
     * 静默安装
     * 需要root权限
     *
     * @author maple
     * @time 2018/12/13 10:13
     */
    public static void installSlient(Context context, File apk) {

        String cmd = "pm install -r " + apk.getPath();
        Process process = null;
        DataOutputStream os = null;
        BufferedReader successResult = null;
        BufferedReader errorResult = null;
        StringBuilder successMsg = null;
        StringBuilder errorMsg = null;
        try {
            //静默安装需要root权限

            process = Runtime.getRuntime().exec("su");
            os = new DataOutputStream(process.getOutputStream());
            os.write(cmd.getBytes());
            os.writeBytes("\n");
            os.writeBytes("exit\n");
            os.flush();

            //启动第三方应用重启app
            execLinuxCommand(context);

            //执行命令 - app kill
            process.waitFor();

            installApk(context, apk);

            //获取返回结果
            successMsg = new StringBuilder();
            errorMsg = new StringBuilder();

            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 (Exception e) {
            e.printStackTrace();
            Log.e(TAG, "============= installSlient: Exception" + e.toString());

        } finally {
            try {
                if (os != null) {
                    os.close();
                }
                if (process != null) {
                    process.destroy();
                }
                if (successResult != null) {
                    successResult.close();
                }
                if (errorResult != null) {
                    errorResult.close();
                }
            } catch (Exception e) {
                e.printStackTrace();

                Log.e(TAG, "============= installSlient: finally" + e.toString());
            }
        }

        Log.e(TAG, "=================== successMsg: " + successMsg.toString() + ", errorMsg: " + errorMsg.toString());

        if ("Success".equals(successMsg.toString())) {

            Log.e(TAG, "======= apk install success");

        }

        installApk(context, apk);
    }

    /**
     * 重启app
     *
     * @author maple
     * @time 2018/12/13 10:13
     */
    private static void execLinuxCommand(Context context) {
        Log.e(TAG, "========== RTC");

        Intent intent = context.getPackageManager().getLaunchIntentForPackage(context.getPackageName());
        PendingIntent restartIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_ONE_SHOT);
        AlarmManager mgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

        if (Build.VERSION.SDK_INT >= 23) {// 6.0及以上
            Log.e(TAG, "=================== android 6.0");
            mgr.setExactAndAllowWhileIdle(AlarmManager.RTC, System.currentTimeMillis() + 20000, restartIntent);
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {// 4.4及以上

            Log.e(TAG, "=================== android 4.4.0");
            mgr.setExact(AlarmManager.RTC, System.currentTimeMillis() + 20000, restartIntent);
        }
    }
}