Java android.view.InflateException:无法膨胀碎片
我正在Fragment类中编写一个asyncTask代码,但我无法让它工作。相反,应用程序抛出了InflateException 以下是矿山代码:Java android.view.InflateException:无法膨胀碎片,java,android,android-fragments,android-asynctask,Java,Android,Android Fragments,Android Asynctask,我正在Fragment类中编写一个asyncTask代码,但我无法让它工作。相反,应用程序抛出了InflateException 以下是矿山代码: public class MainActivity extends FragmentActivity{ @Override protected void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); setCon
public class MainActivity extends FragmentActivity{
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
MainHandlerFragment firstFragment = new MainHandlerFragment();
firstFragment.new MyTask().execute(query);
}
MainHandlerFragment.java
public class MainHandlerFragment extends Fragment{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.home_detail, container, false);
return view;
}
class MyTask extends AsyncTask<String, Void, String> {
@Override
protected Organization doInBackground(String... urls) {
// AN Api call i am making here
}
}
原因:java.lang.ClassCastException:
com.stata.mobile.android.ui.MainHandlerFragment无法强制转换为
android.support.v4.app.Fragment E/AndroidRuntime(1347):
您必须导入support
fragment库并使用它,然后删除importandroid.fragment
库
删除
导入android.app.Fragment
并添加导入android.support.v4.app.Fragment
在您的MainHandlerFragment
类中,您也可以发布stacktrace吗?
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true">
<fragment
android:id="@+id/home_detail"
android:name="com.stata.mobile.android.ui.MainHandlerFragment"
android:layout_height="wrap_content"
android:layout_width="match_parent"/>
</FrameLayout>
<Linearlayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/home_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
*java.lang.RuntimeException:* Unable to start activity ComponentInfo{com.stata.mobile.android/com.stata.mobile.android.ui.MainActivity}: *android.view.InflateException*: Binary XML file line #9: Error inflating class fragment
E/AndroidRuntime( 1292): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
E/AndroidRuntime( 1292): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
E/AndroidRuntime( 1292): at android.app.ActivityThread.access$800(ActivityThread.java:135)
E/AndroidRuntime( 1292): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
E/AndroidRuntime( 1292): at android.os.Handler.dispatchMessage(Handler.java:102)
E/AndroidRuntime( 1292): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
E/AndroidRuntime( 1292): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
*Caused by: java.lang.ClassCastException:* com.stata.mobile.android.ui.MainHandlerFragment cannot be cast to android.support.v4.app.Fragment
E/AndroidRuntime( 1347): at android.support.v4.app.Fragment.instantiate(Fragment.java:394)
E/AndroidRuntime( 1347): at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
E/AndroidRuntime( 1347): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)