Question

我已经使用viewpager实现了ActionBar.TabListener。现在我想在某些条件下禁用Tab键我已经停止使用TouchListner进行滑动，但希望对Tab Click执行相同操作。这是我的代码。

MainActivity.java

public class MainActivity extends FragmentActivity implements ActionBar.TabListener {

    ActionBar actionBar;
    ViewPager viewPager;
    String check ="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        viewPager = (ViewPager) findViewById(R.id.pager);

        FragmentManager fragmentManager = getSupportFragmentManager();
        viewPager.setAdapter(new MyAdpter(fragmentManager));
        viewPager.setOnTouchListener(new View.OnTouchListener() {

            @Override
            public boolean onTouch(View arg0, MotionEvent arg1) {
                // TODO Auto-generated method stub

                if ("".equals(check)) {
                    return true;
                }
                return false;
            }
        });
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }

            @Override
            public void onPageSelected(int position) {
                actionBar.setSelectedNavigationItem(position);
            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
       actionBar =  getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);


        ActionBar.Tab tab1 = actionBar.newTab();
        tab1.setText("Tab 1");
        tab1.setTabListener(this);

        ActionBar.Tab tab2 = actionBar.newTab();
        tab2.setText("Tab 2");
        tab2.setTabListener(this);

        ActionBar.Tab tab3 = actionBar.newTab();
        tab3.setText("Tab 3");
        tab3.setTabListener(this);

        actionBar.addTab(tab1);
        actionBar.addTab(tab2);
        actionBar.addTab(tab3);

        viewPager.setCurrentItem(2, false);
    }


    @Override
    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
            viewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {

    }

    @Override
    public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {

    }
}

MyAdpter.java

class MyAdpter extends FragmentPagerAdapter{

    public MyAdpter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        Fragment fragment = null;
        if(position==0){
            fragment = new FragmentA();
        }
        if(position==1){
            fragment = new FragmentB();
        }
        if(position==2){
            fragment = new FragmentC();
        }
        return fragment;
    }

    @Override
    public int getCount() {
        return 3;
    }
}

FragmentA.java

public class FragmentA extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_a , container,false);
    }
}

FragmentB / FragmentC类似于FragmentA

activity_main.xml中

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

</android.support.v4.view.ViewPager>

截图

Answer 1

你可以做这样的事情......

在OnCheckedChanged listener for复选框中，您可以指定启用哪些选项卡..

只是做

// to enable
tabLayout.getChildAt(position).setEnabled(true);

// or to disable
tabLayout.getChildAt(position).setClickable(false);.

使用此属性启用或禁用标签上的点击。

如何在某些条件下禁用/启用ActionBar.TabListener

1 个答案: