Question

我有一个带滑动标签的工具栏。现在，当用户更改选项卡时，如何更改工具栏上的数据。使用SlidingTabLayout和SlidingTabStrip。在SlidingTabLayout中覆盖了onPageSelected。

toolbar_search.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/ColorPrimary"
android:elevation="2dp"
android:theme="@style/Base.ThemeOverlay.AppCompat.Dark" >

<AutoCompleteTextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/autocomplete"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:drawableLeft="@drawable/ic_action_search"
    android:hint=" Bus Service Number"
    android:textColor="#000" />
</android.support.v7.widget.Toolbar>

SearchByBusInfo.java（主要活动）

public class SearchByBusInfo extends AppCompatActivity  {

// Declaring Your View and Variables

Toolbar toolbar;
ViewPager pager;
ViewPagerAdapter adapter;
SlidingTabLayout tabs;
CharSequence Titles[] = { "tab1", "tab2" };
int Numboftabs = 2;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search_by_bus_info);

    // Creating The Toolbar and setting it as the Toolbar for the activity
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    // Creating The ViewPagerAdapter and Passing Fragment Manager, Titles
    // fot the Tabs and Number Of Tabs.
    adapter = new ViewPagerAdapter(getSupportFragmentManager(), Titles,
            Numboftabs);

    // Assigning ViewPager View and setting the adapter
    pager = (ViewPager) findViewById(R.id.pager);
    pager.setAdapter(adapter);

    // Assiging the Sliding Tab Layout View
    tabs = (SlidingTabLayout) findViewById(R.id.tabs);
    tabs.setDistributeEvenly(true); // To make the Tabs Fixed set this true,
                                    // This makes the tabs Space Evenly in
                                    // Available width

    // Setting Custom Color for the Scroll bar indicator of the Tab View
    tabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
        @Override
        public int getIndicatorColor(int position) {
            return getResources().getColor(R.color.tabsScrollColor);
        }
    });

    // Setting the ViewPager For the SlidingTabsLayout
    tabs.setViewPager(pager);

}



@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main_menu, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    // noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}


}

ViewPageAdapter.java

public class ViewPagerAdapter extends FragmentStatePagerAdapter {

CharSequence Titles[]; // This will Store the Titles of the Tabs which are
                        // Going to be passed when ViewPagerAdapter is
                        // created
int NumbOfTabs; // Store the number of tabs, this will also be passed when
                // the ViewPagerAdapter is created

// Build a Constructor and assign the passed Values to appropriate values in
// the class
public ViewPagerAdapter(FragmentManager fm, CharSequence mTitles[],
        int mNumbOfTabsumb) {
    super(fm);

    this.Titles = mTitles;
    this.NumbOfTabs = mNumbOfTabsumb;

}

// This method return the fragment for the every position in the View Pager
@Override
public Fragment getItem(int position) {

    if (position == 0) // if the position is 0 we are returning the First
                        // tab
    {

        Tab1 tab1 = new Tab1();

        return tab1;
    } else // As we are having 2 tabs if the position is now 0 it must be 1
            // so we are returning second tab
    {

        Tab2 tab2 = new Tab2();
        return tab2;
    }

}

// This method return the titles for the Tabs in the Tab Strip

@Override
public CharSequence getPageTitle(int position) {
    return Titles[position];
}

// This method return the Number of tabs for the tabs Strip

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

}

Answer 1

您可以在加载的每个片段中为其他菜单充气。

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.menu_main,menu);
}

其中menu_main.xml可以是这样的：

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<item
    android:id="@+id/myAction"
    android:orderInCategory="100"
    android:icon="@drawable/a_drawable"
    app:showAsAction="always" />

要收听Action事件，您必须覆盖OnCreateOptionsMenu

Answer 2

如果您使用txtConvertir = new JTextField(); ValidarPrecio validarprecio = new ValidarPrecio(); txtConvertir.addKeyListener(validarprecio);：

，可以随时尝试使用此功能

ViewPager

Android：我有一个带滑动标签的工具栏。现在，当用户更改标签

2 个答案: