无法实例活动ComponentInfo Android中接收短信应用 [英] Unable to instantiate activity ComponentInfo in Android Receive Sms App

问题描述

面对无法实例活动ComponentInfo问题，同时推出了手机短信接收器的应用。任何能告诉我什么我做错了????

<？pre> ＆LT; XML版本=1.0编码=UTF-8＆GT;＆LT;清单的xmlns：机器人=htt​​p://schemas.android.com/apk / RES / Android的
  包=com.raja.receivesms
  安卓版code =1
  机器人：=的versionName1.0.0＆GT;
＆lt;应用机器人：图标=@绘制/ ic_launcher机器人：标签=@字符串/ APP_NAME＆GT;
    ＆LT;活动机器人：名字=。ReceivesmsActivity
              机器人：标签=@字符串/ APP_NAME＆GT;
        ＆所述;意图滤光器＆gt;
            ＆lt;作用机器人：名字=android.intent.action.MAIN/＆GT;
            ＆LT;类机器人：名字=android.intent.category.LAUNCHER/＆GT;
        ＆所述; /意图滤光器＆gt;
    ＆LT; /活性GT;
    ＆lt;接收机器人：名字=。ReceivesmsActivity＆GT;
        ＆所述;意图滤光器＆gt;
            ＆lt;作用机器人：名字=android.provider.Telephony.SMS_RECEIVED/＆GT;
        ＆所述; /意图滤光器＆gt;
    ＆LT; /接收器＆GT;
＆LT; /用途＆gt;
＆LT;使用许可权的android：NAME =android.permission.RECEIVE_SMS＆GT;
＆LT; /使用许可权＆GT;
＆LT;采用-SDK安卓的minSdkVersion =8/＆GT;＆LT; /清单＆GT;


和类文件如下ReceivesmsActivity.java

 包com.raja.receivesms;
导入android.content *。
进口android.os.Bundle;
进口android.telephony.SmsMessage;
进口android.util.Log;
进口android.widget.Toast;
进口android.content.Intent;公共类ReceivesmsActivity扩展广播接收器{ 私有静态最后弦乐TAG =消息收到; @覆盖
 公共无效的onReceive（上下文的背景下，意图意图）{
     捆绑包= intent.getExtras（）;
     SmsMessage []封邮件= NULL;
     字符串str =;
     如果（捆绑！= NULL）
     {
         [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 + =;
             STR + =封邮件[I] .getMessageBody（）的toString（）。
             STR + =\\ n;
         }
         Toast.makeText（背景下，STR，Toast.LENGTH_SHORT）.show（）;
     }
 }
 }
 

解决方案

您广播接收器即ReceivesmsActivity和活动即ReceivesmsActivity是具有相同的名称可能会引起问题，所以只是改变以不同的名称注册您的短信接收器：

 ＆lt;接收机器人：名字=。ReceivesmsBroadcast＆GT;
        ＆所述;意图滤光器＆gt;
            ＆lt;作用机器人：名字=android.provider.Telephony.SMS_RECEIVED/＆GT;
        ＆所述; /意图滤光器＆gt;
    ＆LT; /接收器＆GT;
 

在code创建一个类ReceivesmsBroadcast.java：

 公共类ReceivesmsBroadcast扩展广播接收器{ 私有静态最后弦乐TAG =消息收到; @覆盖
 公共无效的onReceive（上下文的背景下，意图意图）{
///您的code去这里 }
 }
 

Facing the Unable to instantiate activity ComponentInfo problem while launching the SMS Receiver Application. Could any tell me what i am doing wrong????

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.raja.receivesms"
  android:versionCode="1"
  android:versionName="1.0.0">
<application android:icon="@drawable/ic_launcher" android:label="@string/app_name">
    <activity android:name=".ReceivesmsActivity"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <receiver android:name=".ReceivesmsActivity"> 
        <intent-filter> 
            <action android:name="android.provider.Telephony.SMS_RECEIVED" /> 
        </intent-filter> 
    </receiver>
</application>
<uses-permission android:name="android.permission.RECEIVE_SMS">
</uses-permission>
<uses-sdk android:minSdkVersion="8" /></manifest>

And class file as follows ReceivesmsActivity.java

    package com.raja.receivesms;
import android.content.*;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.util.Log;
import android.widget.Toast;
import android.content.Intent;

public class ReceivesmsActivity extends BroadcastReceiver {

 private static final String TAG = "Message recieved";

 @Override
 public void onReceive(Context context, Intent intent) {    
     Bundle bundle = intent.getExtras();        
     SmsMessage[] msgs = null;
     String str = "";            
     if (bundle != null)
     {
         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 += " :";
             str += msgs[i].getMessageBody().toString();
             str += "\n";        
         }
         Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
     }                         
 }
 }

解决方案

Your BroadcastReceiver i.e ReceivesmsActivity and Activity i.e ReceivesmsActivity is with same name may be causing problem so just change to different name register your sms receiver as:

<receiver android:name=".ReceivesmsBroadcast"> 
        <intent-filter> 
            <action android:name="android.provider.Telephony.SMS_RECEIVED" /> 
        </intent-filter> 
    </receiver>

and in code create a class ReceivesmsBroadcast.java:

public class ReceivesmsBroadcast extends BroadcastReceiver {

 private static final String TAG = "Message recieved";

 @Override
 public void onReceive(Context context, Intent intent) {    
///     your code go here      

 }
 }

这篇关于无法实例活动ComponentInfo Android中接收短信应用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IT屋！