最近公司需要为终端设备定制一款APP，除了展示的功能，还需要开机自动启动、静默安装后自动启动的功能。终端设备在出场之前就已经Root了，网上也还是有很多Root的代码，今天就不说Root了。话不多说，直接为小伙伴们一一揭开面纱吧。
1.开机自启（较为简单）
首先写一个广播类

public class BootBroadcastReceiver extends BroadcastReceiver {
    static final String action_boot="android.intent.action.BOOT_COMPLETED";

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(action_boot)){
            Intent ootStartIntent=new Intent(context,MainActivity.class);
            ootStartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//这句话一定要加上
            context.startActivity(ootStartIntent);
        }
    }

}

在manifest注册好后，就OK了

//开机自启动广播
        <receiver android:name=".widget.BootBroadcastReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
                <category android:name="android.intent.category.HOME" />
            </intent-filter>
        </receiver>

2.静默安装后自动启动,这里使用命令安装(需要Root)

    /**
     *  静默安装apk
     */
    private boolean installUseRoot(String filePath) {
        if (TextUtils.isEmpty(filePath))
            throw new IllegalArgumentException("Please check apk file path!");
        boolean result = false;
        Process process = null;
        OutputStream outputStream = null;
        BufferedReader errorStream = null;
        try {
            process = Runtime.getRuntime().exec("su");
            outputStream = process.getOutputStream();

            String command = "pm install -r " + filePath + "\n";
            outputStream.write(command.getBytes());
            outputStream.flush();
            outputStream.write("exit\n".getBytes());
            outputStream.flush();
            process.waitFor();
            errorStream = new BufferedReader(new InputStreamReader(process.getErrorStream()));
            StringBuilder msg = new StringBuilder();
            String line;
            while ((line = errorStream.readLine()) != null) {
                msg.append(line);
            }
            if (!msg.toString().contains("Failure")) {
                result = true;
            }
        } catch (Exception e) {
            Log.e("------>", e.getMessage(), e);
        } finally {
            try {
                if (outputStream != null) {
                    outputStream.close();
                }
                if (errorStream != null) {
                    errorStream.close();
                }
            } catch (IOException e) {
                outputStream = null;
                errorStream = null;
                process.destroy();
            }
        }
        return result;
    }

安装完成后使用AlarmManager发送广播，达到自动启动的目的
AlarmManager的详细介绍 http://blog.csdn.net/wangxingwu_314/article/details/8060312

Intent intent= new Intent(mContext, MyBroadcastReceiver.class);
intent.setAction("INSTALL_AND_START");
PendingIntent sender = PendingIntent.getBroadcast(mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager ALARM = (AlarmManager) mContext.getSystemService(mContext.ALARM_SERVICE);
ALARM.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 10*1000, sender);

public class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals("INSTALL_AND_START")) {
            start(context);
        }
    }

    private void start(Context context){
        if (!isRunningForeground(context)){
            startAPP("com.example.newtownterminal", context);//字符串中输入自己app的包名
        }
    }

    /**
     * 启动一个app
     */
    public void startAPP(String appPackageName, Context context){
        try{
            Intent intent = context.getPackageManager().getLaunchIntentForPackage(appPackageName);
            context.startActivity(intent);
        }catch(Exception e){
            Toast.makeText(context, "尚未安装", Toast.LENGTH_LONG).show();
        }
    }

    /**
     * 判断app是否在前台运行
     * @param context
     * @return
     */
    private boolean isRunningForeground (Context context) {
        ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
        ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
        String currentPackageName = cn.getPackageName();
        if(!TextUtils.isEmpty(currentPackageName) && currentPackageName.equals(context.getPackageName())) {
            return true ;
        }
        return false ;
    }

}

 <receiver
     android:name=".receiver.MyBroadcastReceiver"
     android:exported="false" >
        <intent-filter>
             <action android:name="INSTALL_AND_START"/>
        </intent-filter>
  </receiver>