启动活动里面的onReceive的BroadcastReceiv

启动活动里面的onReceive的BroadcastReceiv

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启动活动里面的onReceive的BroadcastReceiver

本文介绍了启动活动里面的onReceive的BroadcastReceiver的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我要开始一个活动在我的的onReceive（）方法。

 包com.splashscreenactivity;

进口android.content.BroadcastReceiver;
进口android.content.Context;
进口android.content.Intent;
进口android.os.Bundle;
进口android.telephony.SmsMessage;
进口android.widget.Toast;

公共类SMSReceiver扩展的BroadcastReceiver {

    公共静态字符串trigger_message =;

    @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）{
        // ---得到通过短信---
        捆绑包= intent.getExtras（）;
        SmsMessage []封邮件= NULL;
        字符串str =;
        如果（捆绑！= NULL）{
            // ---检索收到的短信---
            [对象]的PDU =（对象[]）bundle.get（的PDU）;
            封邮件=新SmsMessage [pdus.length]
            的for（int i = 0; I＆LT; msgs.length;我++）{
                封邮件[I] = SmsMessage.createFromPdu（（字节[]）的PDU [I]）;
                STR + =短信来自+封邮件[I] .getOriginatingAddress（）;
                STR + =;
                。trigger_message =封邮件[I] .getMessageBody（）的toString（）;
                STR + = trigger_message;
                STR + =\ N的;
            }
            // ---显示新短信---
            Toast.makeText（背景下，海峡，Toast.LENGTH_SHORT）.show（）;
            如果（trigger_message.equals（DX））{
                Toast.makeText（背景下，我引发的，Toast.LENGTH_LONG）
                        。显示（）;
                // /////////////////////////
                //我想从这里开始
                // ////////////////////////
                // MainScreenActivity.trigger =现在;
                //意图I =新的意图（背景下，GPS.class）;
                // i.addFlags（Intent.FLAG_ACTIVITY_NEW_TASK）;
                // context.startActivity（ⅰ）;
            } 其他 {
                Toast.makeText（背景下，我没有触发，Bbyz！，
                        Toast.LENGTH_LONG）.show（）;
            }
        }
    }
}

下面是GPS.class 

 包com.splashscreenactivity;

进口android.app.Activity;
进口android.content.BroadcastReceiver;
进口android.content.Context;
进口android.content.Intent;
进口android.location.Location;
进口android.location.LocationListener;
进口android.location.LocationManager;
进口android.os.Bundle;
进口android.telephony.SmsManager;
进口android.telephony.SmsMessage;
进口android.widget.TextView;
进口android.widget.Toast;

公共类GPS扩展活动实现LocationListener的{

    TextView的纬度，logitude;

    / **第一次创建活动时调用。 * /
    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.gps）;
        LocationManager LM =（LocationManager）getSystemService（Context.LOCATION_SERVICE）;
        lm.requestLocationUpdates（LocationManager.GPS_PROVIDER，1000L，500.0f，
                本）;
        Toast.makeText（这一点，我现在开始，Toast.LENGTH_LONG）;
        //纬度=（TextView中）findViewById（R.id.txtLat）;
        // logitude =（TextView中）findViewById（R.id.txtLongi）;
        // latitude.setText（载入中...）;
        // logitude.setText（载入中...）;
    }

    字符串LATTITUDE;
    字符串LOGITUDE;

    @覆盖
    公共无效onLocationChanged（位置定位）{
        双纬度= location.getLatitude（）;
        双滞后= location.getLongitude（）;
        LATTITUDE = Double.toString（LAT）;
        LOGITUDE = Double.toString（滞后）;
        // latitude.setText（LATTITUDE）;
        // logitude.setText（LOGITUDE）;
        // SmsManager的SM = SmsManager.getDefault（）;
        // //此处就是文本的目的应该去
        //串号=5556;
        // sm.sendTextMessage（数字，空，
        //纬度=+ latitude.getText（）+\ nlongitude =+ logitude.getText（），
        // NULL，NULL）;
    }

    @覆盖
    公共无效onProviderDisabled（字符串为arg0）{
    }

    @覆盖
    公共无效onProviderEnabled（字符串为arg0）{
    }

    @覆盖
    公共无效onStatusChanged（字符串为arg0，INT ARG1，捆绑ARG2）{
    }
    // / **注册为更新时，活动是在前台* /
    // @覆盖
    //保护无效onResume（）
    // {
    // super.onResume（）;
    // lm.requestLocationUpdates（LocationManager.GPS_PROVIDER，1000L，500.0f，
    // 本）;
    //}
    //
    // / **停止更新活动时暂停* /
    // @覆盖
    //保护无效的onPause（）{
    // super.onPause（）;
    // lm.removeUpdates（本）;
    //}
}

解决方案

您有上下文作为参数传递给onRecieve（）方法，因此就使用：

  @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）{
        //启动活动
        意图I =新意图（）;
        i.setClassName（com.test，com.test.MainActivity）;
        i.setFlags（Intent.FLAG_ACTIVITY_NEW_TASK）;
        context.startActivity（ⅰ）;
    }

它的工作原理，当然你必须改变包装和活动类名到您自己的。

I want to start an activity in my onReceive() method.

package com.splashscreenactivity;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.widget.Toast;

public class SMSReceiver extends BroadcastReceiver {

    public static String trigger_message = "";

    @Override
    public void onReceive(Context context, Intent intent) {
        // ---get the SMS message passed in---
        Bundle bundle = intent.getExtras();
        SmsMessage[] msgs = null;
        String str = "";
        if (bundle != null) {
            // ---retrieve the SMS message received---
            Object[] pdus = (Object[]) bundle.get("pdus");
            msgs = new SmsMessage[pdus.length];
            for (int i = 0; i < msgs.length; i++) {
                msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
                str += "SMS from " + msgs[i].getOriginatingAddress();
                str += " :";
                trigger_message = msgs[i].getMessageBody().toString();
                str += trigger_message;
                str += "\n";
            }
            // ---display the new SMS message---
            Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
            if (trigger_message.equals("dx")) {
                Toast.makeText(context, "I am triggered", Toast.LENGTH_LONG)
                        .show();
                // /////////////////////////
                // i want to start here
                // ////////////////////////
                // MainScreenActivity.trigger="Now";
                // Intent i = new Intent(context,GPS.class);
                // i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                // context.startActivity(i);
            } else {
                Toast.makeText(context, "I am not triggered,  Bbyz!!!",
                        Toast.LENGTH_LONG).show();
            }
        }
    }
}

here is GPS.class

package com.splashscreenactivity;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.widget.TextView;
import android.widget.Toast;

public class GPS extends Activity implements LocationListener {

    TextView latitude, logitude;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.gps);
        LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f,
                this);
        Toast.makeText(this, "i m started", Toast.LENGTH_LONG);
        // latitude = (TextView)findViewById(R.id.txtLat);
        // logitude = (TextView)findViewById(R.id.txtLongi);
        // latitude.setText("Loading...");
        // logitude.setText("Loading...");
    }

    String LATTITUDE;
    String LOGITUDE;

    @Override
    public void onLocationChanged(Location location) {
        double lat = location.getLatitude();
        double lag = location.getLongitude();
        LATTITUDE = Double.toString(lat);
        LOGITUDE = Double.toString(lag);
        // latitude.setText(LATTITUDE);
        // logitude.setText(LOGITUDE);
        // SmsManager sm = SmsManager.getDefault();
        // // here is where the destination of the text should go
        // String number = "5556";
        // sm.sendTextMessage(number, null,
        // "latitude="+latitude.getText()+"\nlongitude="+logitude.getText(),
        // null, null);
    }

    @Override
    public void onProviderDisabled(String arg0) {
    }

    @Override
    public void onProviderEnabled(String arg0) {
    }

    @Override
    public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
    }
    // /** Register for the updates when Activity is in foreground */
    // @Override
    // protected void onResume()
    // {
    // super.onResume();
    // lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f,
    // this);
    // }
    //
    // /** Stop the updates when Activity is paused */
    // @Override
    // protected void onPause() {
    // super.onPause();
    // lm.removeUpdates(this);
    // }
}
解决方案

You have context passed as parameter to onRecieve() method, so just use:

 @Override
    public void onReceive(Context context, Intent intent) {
        //start activity
        Intent i = new Intent();
        i.setClassName("com.test", "com.test.MainActivity");
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
    }

It works, of course you have to change package and activity class name to your own.

这篇关于启动活动里面的onReceive的BroadcastReceiver的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

09-01 18:20
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