fragment快捷键

Posted 2020-10-17 沈晖然

 

在res下面新建drawable文件夹》新建radio_select.xml文件》

-<selector xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_checked="true" android:drawable="@color/red"/>

<item android:state_checked="false" android:drawable="@color/white"/>

</selector>

 colors.xml下面的：

<resources>

<color name="red">#f00</color>

<color name="white">#ffffff</color>

</resources>

 

 布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >
    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="9" />
    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:id="@+id/radio_group"
        android:layout_weight="1"
        android:orientation="horizontal" >
        <RadioButton
            android:id="@+id/rb_01"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="@drawable/radio_select"
            android:button="@null"
            android:checked="true"
            android:gravity="center"
            android:text="xml"
            android:textSize="18sp" />
        <RadioButton
            android:id="@+id/rb_02"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="@drawable/radio_select"
            android:button="@null"
            android:gravity="center"
            android:text="json"
            android:textSize="18sp" />
    </RadioGroup>
</LinearLayout>

==========================================================

主要方法

  //FragmentActivity 找控件
  view_pager = (ViewPager) findViewById(R.id.view_pager);
  radio_group = (RadioGroup) findViewById(R.id.radio_group);
  // 通过viewPager展示Fragment
  list = new ArrayList<Fragment>();
list.add(new Fragment_xml());
list.add(new Fragment_json());
  // 适配到ViewPager上
view_pager.setAdapter(new MyPagerAdapter(getSupportFragmentManager(),list));
  // 滑动页面,,,,radiobutton切换
view_pager.setOnPageChangeListener(new OnPageChangeListener() {
      @Override
      public void onPageSelected(int arg0) {
          radio_group.check(radio_group.getChildAt(arg0).getId());
      }
      @Override
      public void onPageScrolled(int arg0, float arg1, int arg2) {
      }
      @Override
      public void onPageScrollStateChanged(int arg0) {
      }
  });
  // 切换radiobutton,,,页面切换
radio_group.setOnCheckedChangeListener(new OnCheckedChangeListener() {
      @Override
      public void onCheckedChanged(RadioGroup group, int checkedId) {
          switch (checkedId) {
              case R.id.rb_01:
                  view_pager.setCurrentItem(0, false);
                  break;
              case R.id.rb_02:
                  view_pager.setCurrentItem(1, false);
                  break;
              default:
                  break;
          }
      }
  });

============================================

FragmentPagerAdapter类

import java.util.List;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class MyPagerAdapter extends FragmentPagerAdapter {
    private List<Fragment> list;
    public MyPagerAdapter(FragmentManager fm, List<Fragment> list) {
        super(fm);
        this.list = list;
    }
    @Override
    public Fragment getItem(int arg0) {
        // TODO Auto-generated method stub
        return list.get(arg0);
    }
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return list.size();
    }
}