Question

MainActivity.Java

这是我的代码导致启动应用程序时出现崩溃..只有在我评论OnCreate()

的代码时才运行

OnCreate方法

final TabLayout tb = (TabLayout) findViewById(R.id.tabs);
final ViewPager pager = (ViewPager) findViewById(R.id.pager);
pager.setAdapter(new FragmentManagerAdapter(getSupportFragmentManager(),MainActivity.this));
tb.setupWithViewPager(pager);

记录我的项目

12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime: FATAL EXCEPTION: main
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.TextView
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime:     at pk.com.messenger.rabta.tablayout.FragmentManager.onCreateView(FragmentManager.java:38)
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime:     at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1248)
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime:     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
12-12 13:15:42.800 30536-30536/pk.com.messenger.rabta.tablayout E/AndroidRuntime:     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1613)

FragmentLayout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent">

    <TextView android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:textAppearance="?android:attr/textAppearanceLarge"
              android:text="Large Text"
              android:id="@+id/textView1"
              android:layout_gravity="center" />
</LinearLayout>

谢谢！

Answer 1

在你的片段中这样做，

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view= inflater.inflate(R.layout.yourFragment, container, false);
    TextView tv = (TextView) view.findViewById(R.id.textView1);
    tv.setText("Success");
    return view;
}

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