经过几个小时的思考，我几乎放弃了如何将值从 BroadcastReceiver 传递到另一个 Activity。
这是我目前在 BroadcastReceiver 类中的代码：
package com.example.smsTest;
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 {
@Override
public void onReceive(Context context, Intent intent) {
Bundle extras = intent.getExtras();
if (extras == null)
return;
Object[] pdus = (Object[]) extras.get("pdus");
for (int i = 0; i < pdus.length; i++) {
SmsMessage SMessage = SmsMessage.createFromPdu((byte[]) pdus[i]);
String sender = SMessage.getOriginatingAddress();
String body = SMessage.getMessageBody().toString();
// A custom Intent that will used as another Broadcast
Intent in = new Intent("SmsMessage.intent.MAIN").
putExtra("get_msg", sender+":"+body);
// To display a Toast whenever there is an SMS.
Toast.makeText(context,body,Toast.LENGTH_LONG).show();
//You can place your check conditions here(on the SMS or the sender)
//and then send another broadcast
context.sendBroadcast(in);
// This is used to abort the broadcast and can be used to silently
// process incoming message and prevent it from further being
// broadcasted. Avoid this, as this is not the way to program an app.
this.abortBroadcast();
}
}
}
这是 SMSReceiverActivity 类的代码：
package com.example.smsTest;
import android.app.ListActivity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.TextView;
public class SMSReceiverActivity extends ListActivity {
private BroadcastReceiver mIntentReceiver;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_smsreceiver);
}
@Override
protected void onResume() {
super.onResume();
IntentFilter intentFilter = new IntentFilter("SmsMessage.intent.MAIN");
mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String msg = intent.getStringExtra("get_msg");
//Process the sms format and extract body & phoneNumber
msg = msg.replace("\n", "");
String body = msg.substring(msg.lastIndexOf(":")+1, msg.length());
String pNumber = msg.substring(0,msg.lastIndexOf(":"));
//Add it to the list or do whatever you wish to
TextView text = (TextView) findViewById(R.id.editText1);
text.setText(body);
}
};
this.registerReceiver(mIntentReceiver, intentFilter);
}
@Override
protected void onPause() {
super.onPause();
this.unregisterReceiver(this.mIntentReceiver);
}
}
我还在 AndroidManifest.xml 中定义了活动，如下所示：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.smsTest"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".SMSTest"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SMSReceiverActivity"></activity>
<receiver android:name=".SmsReceiver">
<intent-filter android:priority="2147483647">
<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
</intent-filter>
</receiver>
</application>
<uses-permission android:name="android.permission.SEND_SMS">
</uses-permission>
<uses-permission android:name="android.permission.RECEIVE_SMS">
</uses-permission>
</manifest>
我已密切关注在此链接上找到的教程。
它在那里说“我们在类本身中声明了一个 BroadcastReciever，而不是在 onResume() 方法中的清单，以便当应用程序返回前台时，它应该接收 SMS。”
我假设如果“SMSReceiverActivity”处于活动状态，它将接收来自 SmsReceiver（即 BroadcastReceiver）的消息。我尝试创建一个按钮来从我的 SMSTest.java 打开 SMSReceiverActivity，如下所示：
btnMsgRec.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), SMSReceiverActivity.class);
startActivityForResult(myIntent, 0);
}
});
但是当我单击按钮时，应用程序崩溃了。
如果有人可以帮助我，我将非常感激。如何将 BroadcastReceiver 中的值作为新 Activity 传递给 SMSReceiverActivity.java。
谢谢
更新：
这是我单击“打开短信接收器”按钮后的 logcat：
04-07 11:38:16.878: D/AndroidRuntime(5269): Shutting down VM
04-07 11:38:16.878: W/dalvikvm(5269): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
04-07 11:38:16.908: E/AndroidRuntime(5269): FATAL EXCEPTION: main
04-07 11:38:16.908: E/AndroidRuntime(5269): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.smsTest/com.example.smsTest.SMSReceiverActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.os.Handler.dispatchMessage(Handler.java:99)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.os.Looper.loop(Looper.java:137)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ActivityThread.main(ActivityThread.java:5041)
04-07 11:38:16.908: E/AndroidRuntime(5269): at java.lang.reflect.Method.invokeNative(Native Method)
04-07 11:38:16.908: E/AndroidRuntime(5269): at java.lang.reflect.Method.invoke(Method.java:511)
04-07 11:38:16.908: E/AndroidRuntime(5269): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-07 11:38:16.908: E/AndroidRuntime(5269): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-07 11:38:16.908: E/AndroidRuntime(5269): at dalvik.system.NativeStart.main(Native Method)
04-07 11:38:16.908: E/AndroidRuntime(5269): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ListActivity.onContentChanged(ListActivity.java:243)
04-07 11:38:16.908: E/AndroidRuntime(5269): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.Activity.setContentView(Activity.java:1881)
04-07 11:38:16.908: E/AndroidRuntime(5269): at com.example.smsTest.SMSReceiverActivity.onCreate(SMSReceiverActivity.java:17)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.Activity.performCreate(Activity.java:5104)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-07 11:38:16.908: E/AndroidRuntime(5269): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-07 11:38:16.908: E/AndroidRuntime(5269): ... 11 more