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android - 无法在 Android 接收短信应用程序中实例化 Activity ComponentInfo

转载 作者:行者123 更新时间:2023-11-30 04:11:39 26 4
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启动 SMS 接收器应用程序时遇到无法实例化 Activity ComponentInfo 问题。谁能告诉我我做错了什么????

<?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>

类文件如下 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();
}
}
}

最佳答案

您的 BroadcastReceiver 即 ReceivesmsActivity 和 Activity 即 ReceivesmsActivity 具有相同的名称可能会导致问题,因此只需更改为不同的名称即可将您的短信接收器注册为:

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

并在代码中创建一个类 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

}
}

关于android - 无法在 Android 接收短信应用程序中实例化 Activity ComponentInfo,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10769107/

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