Question

活动类：

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：

致命的例外：主要

E / AndroidRuntime：致命异常：主要处理：com.example.locale.tablayoutdynamicsample，PID：27084 java.lang.IllegalStateException：带适配器的ViewPager com.example.locale.tablayoutdynamicsample.ViewPagerAdapter@3b0e90d6需要一个视图id 在android.support.v4.app.FragmentStatePagerAdapter.startUpdate（FragmentStatePagerAdapter.java:87）在android.support.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）在android.view.View.measure（View.java:18580）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5827）在android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java:1435）在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android.widget.FrameLayout.onMeasure（FrameLayout.java:430）在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）在android.support.v7.widget.ActionBarOverlayLayout.onMeasure（ActionBarOverlayLayout.java:393）在android.view.View.measure（View.java:18580）在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）在android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java:1435）在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android.widget.FrameLayout.onMeasure（FrameLayout.java:430）在com.android.internal.policy.impl.PhoneWindow $ DecorView.onMeasure（PhoneWindow.java:2897）在android.view.View.measure（View.java:18580）在android.view.ViewRootImpl.performMeasure（ViewRootImpl.java:2248）在android.view.ViewRootImpl.measureHierarchy（ViewRootImpl.java:1306）在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.Choreographer $ CallbackRecord.run（Choreographer.java:777）在android.view.Choreographer.doCallbacks（Choreographer.java:590）在android.view.Choreographer.doFrame（Choreographer.java:560）在android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:763）在android.os.Handler.handleCallback（Handler.java:739）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:145）在android.app.ActivityThread.main（ActivityThread.java:5951） at java.lang.reflect.Method.invoke（Native Method）在java.lang.reflect.Method.invoke（Method.java:372）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:1388）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1183）

Answer 1

它说＆＃34; VewPager with Adapter ViewPagerAdapter@3b0e90d6 requires a view id＆＃34;所以试试这个：

viewPager.setId(anyInteger);

以编程方式创建Viewpager的Tablayout无效

1 个答案: