如何将BroadcastReceiver活动的值传递到主活动

Question

我希望在我的MainActivity中获取安装引荐值。为此，我使用了两个类：

1）MainActivity

2）ReferrerReceiver

我成功地在ReferrerReceiver类中接收到了安装引荐值，在使用Toast控件进行测试后，但我无法将该值从ReferrerReceiver传递到MainActivity。

下面是我尝试过的代码，请有人帮助我。

提前感谢您。

---

1）MainActivity.java

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TextView tv1 = (TextView) findViewById(R.id.tv1);
        Intent in1= getIntent();
        String ldString = in1.getStringExtra("number");
        tv1.setText(ldString);

    }
}

---

2) ReferrerReceiver.java

public class ReferrerReceiver extends BroadcastReceiver {           
    @Override
    public void onReceive(Context context, Intent intent) {

        if (!intent.getAction().equals("com.android.vending.INSTALL_REFERRER")) {
            return;
        }

          Bundle bundle = intent.getExtras();        
          String phoneNumber = bundle.getString("referrer");
          Intent i = new Intent(context, MainActivity.class);
          i.putExtra("number", phoneNumber);
          context.startActivity(i);
  }
}

---

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.myreferrer.in"
      android:versionCode="7"
    android:versionName="1.0.6" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme"                
         >

        <receiver android:name="com.myreferrer.in.ReferrerReceiver"
            android:enabled="true">               
                <action android:name="com.android.vending.INSTALL_REFERRER" />
                </intent-filter>
        </receiver>

        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" 
            android:launchMode="singleTask"
            >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

- Premkumar Manipillai

Answer 1

这是我在项目中实现的代码，对我很有效。请使用以下代码：

(1) MainActivity.java

public class MainActivity extends Activity {

    TextView tv1;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv1 = (TextView) findViewById(R.id.tv1);
    }

    public static void log(Context context, String string) {
        if(string!=null) {
            Toast.makeText(conte, "Referrer value is."+string, Toast.LENGTH_LONG).show();
       tv1.setText(string);
    }

}

(2) ReferrerReceiver.java

public class ReferrerReceiver extends BroadcastReceiver {
    String referrer,rawReferrer;
    public static String getReferrer(Context context) {
        // Return any persisted referrer value or null if we don't have a referrer.
        return context.getSharedPreferences("referrer", Context.MODE_PRIVATE).getString("referrer", null);
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        try {
        // Make sure this is the intent we expect - it always should be.
        if ((null != intent) && (intent.getAction().equals("com.android.vending.INSTALL_REFERRER"))) {
            // This intent should have a referrer string attached to it.
            rawReferrer = intent.getStringExtra("referrer");
            if (null != rawReferrer) {
                // The string is usually URL Encoded, so we need to decode it.
                referrer = URLDecoder.decode(rawReferrer, "UTF-8");                           
                Toast.makeText(context, "ReferrerReceiver." + referrer, Toast.LENGTH_LONG).show();
                MainActivity.log(context,"\nRaw referrer: " + rawReferrer +"\nReferrer: " + referrer);
                MainActivity.log(context,referrer);

                // Persist the referrer string.
                    context.getSharedPreferences("referrer", Context.MODE_PRIVATE).
                    edit().putString("referrer", referrer).commit();
                } else {
                    Toast.makeText(context, "ReferrerReceiver." + referrer, Toast.LENGTH_LONG).show();
                    MainActivity.log(context,referrer);
                    context.getSharedPreferences("referrer", Context.MODE_PRIVATE).
                    edit().putString("referrer", referrer).commit();
                }
            } else {
                Toast.makeText(context, "ReferrerReceiver intent value is null.", Toast.LENGTH_LONG).show();
                MainActivity.log(context,referrer);
                MainActivity.log(context,"intent value is nulll");
                context.getSharedPreferences("referrer", Context.MODE_PRIVATE).
                edit().putString("referrer", "intent value is nulll").commit();
            }
        }
        catch (Exception e) {
            //Toast.makeText(context, "ReferrerReceiver catch"+e, Toast.LENGTH_LONG).show();
            MainActivity.log(context, e.toString());
        }
    }
}

(3) AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.myreferrer.in"
      android:versionCode="7"
    android:versionName="1.0.6" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme"                
         >

        <receiver android:name="com.myreferrer.ReferrerReceiver" android:exported="true">
            <intent-filter>
                <action android:name="com.android.vending.INSTALL_REFERRER"></action>
            </intent-filter>
        </receiver> 

        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" 
            android:launchMode="singleTask"
            >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

(4) 示例链接:

https://play.google.com/store/apps/details?id=your_package_name&referrer=Welcome

- Premkumar Manipillai

Answer 2

你在清单文件中将你的活动声明为“single Task”，因此如果你的活动实例已经启动，系统会创建（NewIntent）来重新启动你的活动。尝试在onCreate()之前放置以下代码：

@Override

 protected void onNewIntent(Intent intent) {

     super.onNewIntent(intent);

     // NOW getIntent() should always return the recent

     setIntent(intent);
 }

获取带有新附加项的最新意图。

- said

Answer 3

您正在使用

Intent in1 = new Intent();
String ldString = in1.getStringExtra("KEY");

你正在声明一个错误的新意图，而且你放置的键也是错误的，应该是number。请将其替换为：

Intent intent= getIntent();
String ldString = intent.getStringExtra("number");

- Straw Hat

---

我尝试过这个。这个也不起作用。Intent intent = getIntent(); String ldString = intent.getStringExtra("number"); - Premkumar Manipillai

安装引荐只在Play Store应用程序中有效，所以我将其上传到Play Store，并在发布此应用程序后从Play Store安装和启动应用程序。MainActivity类意图接收的值为“null”。 - Premkumar Manipillai