相关疑难解决方法(0)

我收到了Android 8用户的报告,我的应用(使用后端Feed)没有显示内容.经过调查,我发现在Android 8上发生以下异常:

08-29 12:03:11.246 11285-11285/ E/: [12:03:11.245, main]: Exception: IOException java.io.IOException: Cleartext HTTP traffic to * not permitted
at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:115)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:458)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.deiw.android.generic.tasks.AbstractHttpAsyncTask.doConnection(AbstractHttpAsyncTask.java:207)
at com.deiw.android.generic.tasks.AbstractHttpAsyncTask.extendedDoInBackground(AbstractHttpAsyncTask.java:102)
at com.deiw.android.generic.tasks.AbstractAsyncTask.doInBackground(AbstractAsyncTask.java:88)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)

(我删除了包名,URL和其他可能的标识符)

在Android 7及更低版本上一切正常,我没有设置android:usesCleartextTrafficManifest(并设置它true没有帮助,无论如何这是默认值),我也没有使用网络安全信息.如果我打电话NetworkSecurityPolicy.getInstance().isCleartextTrafficPermitted(),它会返回falseAndroid 8,true对于旧版本,使用相同的apk文件.我试图在关于Android O的Google信息上找到一些提及,但没有成功.

我在服务器中创建了一个XML文件.它包含title和link标签.我获取标签并将其显示为链接ListView.当用户点击链接时,我想.pls在Radio Station应用程序中播放该文件.

这是我的XML文件:

<item>
    <title> Kushi FM </title>
    <link>http://108.163.197.114:8071/listen.pls</link>
</item>

我不知道如何在下一个活动中播放链接.

MainActivity:

public class MainActivity extends AppCompatActivity {
    // All static variables
    static final String URL1 = "http://servernmae.com/stations";
    // XML node keys
    static final String KEY_ITEM = "item"; // parent node
    static final String KEY_TITLE = "title";
    static final String KEY_LINK = "link";
    URL url;

    URLConnection urlConnection;
    //Context context;
    ListView listview;
    int images=R.drawable.radio;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main); …

我按照这个创建了一个Android Radio Stream

它在那里工作正常所以我试图添加一个标签布局

所以我按照这个添加Tab布局

在那里我已经添加但是我有很多错误所以我改变了一些像

从

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.main_activity);

对此

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View viewRoot = inflater.inflate(R.layout.main_activity, container, false);

并且viewRoot.findViewById在一些地方添加on-create但是在On之后创造了我曾经拥有的东西getActivity().findViewById

因为我已经return viewRoot;在onCreate中给出 了它是不可能的

现在我收到了错误 play.setBackground(getResources().getDrawable(R.drawable.volume0));

喜欢

    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setBackground(android.graphics.drawable.Drawable)' on a null object reference
at star.yx.tabview.ProfileFragment.updatePlayStatus(ProfileFragment.java:370)
at star.yx.tabview.ProfileFragment.setIFace(ProfileFragment.java:205)
at star.yx.tabview.ProfileFragment.onCreateView(ProfileFragment.java:158)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2184)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1298)
at android.support.v4.app.FragmentManagerImpl.moveFragmentsToInvisible(FragmentManager.java:2323)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2136)
at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2092)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1969) …