Tablayout与Viewpager编程创建不工作

活动类别:Tablayout与Viewpager编程创建不工作

public class DynamicActivity extends AppCompatActivity{ 

private LinearLayout mLinearLayout;

private View mView;

@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

mLinearLayout = new LinearLayout(DynamicActivity.this);

mLinearLayout.setOrientation(LinearLayout.VERTICAL);

mLinearLayout.setLayoutParams(new LinearLayout.LayoutParams(

ViewGroup.LayoutParams.MATCH_PARENT,

ViewGroup.LayoutParams.MATCH_PARENT));

TabLayout tabLayout = new TabLayout(DynamicActivity.this);

tabLayout.setLayoutParams(new ViewGroup.LayoutParams(

ViewGroup.LayoutParams.MATCH_PARENT,

ViewGroup.LayoutParams.WRAP_CONTENT));

tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);

tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

tabLayout.setBackgroundColor(Color.CYAN);

mLinearLayout.addView(tabLayout);

ViewPager viewPager = new ViewPager(DynamicActivity.this);

viewPager.setLayoutParams(new ViewGroup.LayoutParams(

ViewGroup.LayoutParams.MATCH_PARENT,

ViewGroup.LayoutParams.WRAP_CONTENT));

viewPager.setBackgroundColor(Color.BLUE);

mLinearLayout.addView(viewPager);

ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());

viewPager.setAdapter(viewPagerAdapter);

tabLayout.addTab(tabLayout.newTab());

tabLayout.addTab(tabLayout.newTab());

tabLayout.addTab(tabLayout.newTab());

tabLayout.setupWithViewPager(viewPager);

setContentView(mLinearLayout);

}

}

**Adapter Class :**

public class ViewPagerAdapter extends FragmentStatePagerAdapter{

public ViewPagerAdapter(FragmentManager fm) {

super(fm);

}

@Override

public CharSequence getPageTitle(int position) {

return "Test";

}

@Override

public Fragment getItem(int position) {

return new TestFagment();

}

@Override

public int getCount() {

return 3;

}

}

例外:

致命异常:主

E/AndroidRuntime:致命异常:主 过程: com.example.locale.tablayoutdynamicsample,PID:27084 JAV a.lang.IllegalStateException:具有适配器的ViewPager [email protected]0d6需要在android.support上的android.support.v4.app.FragmentStatePagerAdapter.startUpdate(FragmentStatePagerAdapter.java:87) 处的视图ID为 。 v4.view.ViewPager.populate(ViewPager.java:1148) 在android.support.v4.view.ViewPager.populate(ViewPager.java:1116) 在android.support.v4.view.ViewPager.onMeasure(ViewPager。 java:1642) at android.view.View.measure(View.java:18580) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5827) at android.widget.LinearLayout.measureChildBeforeLayout(L inearLayout.java:1435) 在android.widget.LinearLayout.measureVertical(LinearLayout.java:721) 在android.widget.LinearLayout.onMeasure(LinearLayout.java:612) 在android.view.View.measure(查看。 java:18580) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5827) at android.widget.FrameLayout.onMeasure(FrameLayout.java:430) at android.support.v7.widget.ContentFrameLayout.onMeasure( ContentFrameLayout.java:139) 在android.view.View.measure(View.java:18580) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5827) at android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:393) at android.view.View.measure(View.java:18580) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java: 5827) 在android.widget.FrameLayout.onMeasure(FrameLayout.java:430) 在android.view.View.measure(View.java:18580) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5827) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435) at android.widget.LinearLayout.measureVertical(LinearLayout.java:721) 在android.widget.LinearLayout.onMeasure(LinearLayout.java:612) 在android.view.View.measure(View.java:18580) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5827) 在机器人.widget.FrameLayout.onMeasure(FrameLayout.java:430) at com.android.internal.policy.impl.PhoneWindow $ DecorView.onMeasure(PhoneWindow.java:2897) at android.view.View.measure(View.java :18580) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2248) at android.view.View.RootImpl.measureHierarchy(ViewRootImpl.java:1306) at android.view。ViewRootImpl.performTraversals(ViewRootImpl.java:1548) 在android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1191) 在android.view.ViewRootImpl $ TraversalRunnable.run(ViewRootImpl.java:6642) 在android.view。编排$ CallbackRecord.run(Choreographer.java:777) at android.view.Choreographer.doCallbacks(Choreographer.java:590) at android.view.Choreographer.doFrame(Choreographer.java:560) at android.view。编排$ FrameDisplayEventReceiver.run(Choreographer.java:763) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dis patch.Message(Handler.java:95) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:5951) at java.lang.reflect.Method。调用(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1388) at com.android .internal.os.ZygoteInit.main(ZygoteInit.java:1183)

回答:

它说: “VewPager with Adapter [email protected] requires a view id” 这样试试这个:

viewPager.setId(anyInteger); 

以上是 Tablayout与Viewpager编程创建不工作 的全部内容, 来源链接: utcz.com/qa/262478.html

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