我在AndroidManifest.xml中声明了以下Receiver
<receiver android:name="com.xxx.ReferralReceiver"
android:exported="true">
<intent-filter>
<action android:name="com.android.vending.INSTALL_REFERRER" />
</intent-filter>
</receiver>
ReferralReceiver将引用值(utm_ *)存储到SharedPreferences对象
public void onReceive(Context context, Intent intent) {
SharedPreferences storage = context.getSharedPreferences("ReferralParamsFile", 0);
Editor editor = storage.edit();
editor.putString("test", "test");
editor.commit();
}
但是,在创建主活动时,SharedPreferences对象是emtpy。
public class MainActivity extends Activity {
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
SharedPreferences storage = context.getSharedPreferences(ReferralReceiver.PREFS_FILE_NAME, Context.MODE_PRIVATE);
Map<String,String> referralParams = new HashMap<String,String>();
for(String key : ReferralReceiver.EXPECTED_PARAMETERS)
{
String value = storage.getString(key, null);
if(value != null)
{
params.put(key, value);
}
}
}
我创建了一个在创建活动后手动检索SharedPreferences对象的方法,这似乎工作正常。这里可能有什么问题的线索以及对SharedPreferences对象的初始调用是空的吗?
答案 0 :(得分:0)
通过&#34; onCreate&#34;中的代码验证设备日志在广播接收器更新SharedPreferences对象之前调用方法。