Android 在广播接收器之间传递数据答案

【问题标题】：Android pass data between Broadcast ReceiversAndroid 在广播接收器之间传递数据
【发布时间】：2018-04-02 19:51:12
【问题描述】：

我正在创建一个记录通话的应用程序。我创建了 2 个接收器，一个用于监听电话状态，另一个用于获取拨出电话号码。我可以检测到来自第一个接收器的拨出电话。但我无法从第一个接收者那里获得拨出电话号码。所以我必须创建一个第二个接收器来处理拨出电话，从那里我可以获得电话号码。但我想将拨出电话号码从第二个接收器发送到第一个接收器。我怎么做？我尝试通过 Intent 发送广播，但出现异常。我可以通过其他方式将数据从一个接收器发送到另一个接收器吗？

清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.js.globemaster.autocallrecorder">

    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></uses-permission>
    <uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver android:name=".IncomingCallReceiver">
            <intent-filter>
                <action android:name="android.intent.action.PHONE_STATE"></action>
            </intent-filter>
        </receiver>

        <receiver android:name=".OutgoingCallReceiver">
            <intent-filter>
                <action android:name="android.intent.action.NEW_OUTGOING_CALL"></action>
            </intent-filter>
        </receiver>
    </application>
</manifest>

OutgoingCallReceiver.java

public class OutgoingCallReceiver extends BroadcastReceiver {
    String phonenumber;
    private SaveObject saveObject;

    @Override
    public void onReceive(Context context, Intent intent) {
        phonenumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
        saveObject = SaveObject.getInstance();
        saveObject.setOutgoingnumber(phonenumber);
        Log.e("Outgoing", phonenumber);

    }
}

IncomingReceiver.java:

public class IncomingCallReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
        if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {

        } else if (state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {

        } else if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {

        }
    }
}

【问题讨论】：

标签： android broadcastreceiver

【解决方案1】：

只需创建一个CallReceiver 和下一个intent-filter：

<receiver
        android:name=".CallReceiver"
        android:enabled="true"
        android:exported="true">

        <intent-filter>
            <action android:name="android.intent.action.PHONE_STATE" />
        </intent-filter>

        <intent-filter>
            <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
        </intent-filter>
</receiver>

在你的CallReceiver 中尝试这样做：

@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();

    if (ACTION_NEW_OUTGOING_CALL.equals(action)) {
        // It is outgoing call
        String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
        // You can save this phoneNumber in sharedPreferences for further using
    } else if (ACTION_PHONE_STATE_CHANGED.equals(action)) {
        String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
        // Get here your phoneNumber from sharedPreferences and use it

        if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {

        } else if (state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {

        } else if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {

        }
    }
}

【讨论】：