第六单元pager(寻呼器)

第六单元pager(寻呼器)pagerjava 代码 packagecom example month7day11 Evening1 importandroi support v4 app Fragment importandroi support v4 app FragmentStat importandroi support v4 view ViewPager import app 控制寻呼器开发

pager java代码

package com.example.month7day11.Evening1;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;

import com.example.month7day11.R;

public class Evening1_ViewPager extends AppCompatActivity {
//存放布局的list集合
private List<E1_Fragment> list;

private TextView E1ViewPagerTextView; private RadioGroup E1ViewPagerRadioGroup; private RadioButton E1ViewPagerRadioButton1; private RadioButton E1ViewPagerRadioButton2; private RadioButton E1ViewPagerRadioButton3; private RadioButton E1ViewPagerRadioButton4; private ViewPager E1ViewPagerViewPager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_evening1__view_pager); //初始化控件 E1ViewPagerTextView = (TextView) findViewById(R.id.E1_ViewPager_TextView); E1ViewPagerRadioGroup = (RadioGroup) findViewById(R.id.E1_ViewPager_RadioGroup); E1ViewPagerRadioButton1 = (RadioButton) findViewById(R.id.E1_ViewPager_RadioButton1); E1ViewPagerRadioButton2 = (RadioButton) findViewById(R.id.E1_ViewPager_RadioButton2); E1ViewPagerRadioButton3 = (RadioButton) findViewById(R.id.E1_ViewPager_RadioButton3); E1ViewPagerRadioButton4 = (RadioButton) findViewById(R.id.E1_ViewPager_RadioButton4); E1ViewPagerViewPager = (ViewPager) findViewById(R.id.E1_ViewPager_ViewPager); //存放图片的id int[] arr={R.mipmap.image1,R.mipmap.image2,R.mipmap.image3,R.mipmap.image4}; //初始化 list=new ArrayList<>( ); for (int i = 0; i < arr.length; i++) { //新建布局。 E1_Fragment e1_fragment = new E1_Fragment(); //新建bundle传递数据 Bundle bun = new Bundle(); //添加数据 bun.putString("text","这是第"+(i+1)+"个布局。"); bun.putInt("image",arr[i]); //数据添加到视图。 e1_fragment.setArguments(bun); //添加到集合 list.add(e1_fragment); } //添加适配器,通过匿名类部类。 E1ViewPagerViewPager.setAdapter(new FragmentStatePagerAdapter(getSupportFragmentManager()) { //获取对应的布局。 @Override public Fragment getItem(int i) { return list.get(i); } //循环的次数。 @Override public int getCount() { return list.size(); } }); //添加寻呼机(pager)滑动事件 E1ViewPagerViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { //滑动的距离。 @Override public void onPageScrolled(int i, float v, int i1) { } //滑动到的布局。 @Override public void onPageSelected(int i) { //设置默认选中的按钮。 E1ViewPagerRadioButton1.setChecked(true); switch(i){ case 0: //滑动到哪里就选中哪个按钮。 E1ViewPagerRadioButton1.setChecked(true); break; case 1: //滑动到哪里就选中哪个按钮。 E1ViewPagerRadioButton2.setChecked(true); break; case 2: //滑动到哪里就选中哪个按钮。 E1ViewPagerRadioButton3.setChecked(true); break; case 3: //滑动到哪里就选中哪个按钮。 E1ViewPagerRadioButton4.setChecked(true); break; } } //滑动状态的改变。 @Override public void onPageScrollStateChanged(int i) { } }); //按钮组添加事件。 E1ViewPagerRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { //按钮切换到对应的布局。 switch(checkedId){ case R.id.E1_ViewPager_RadioButton1: E1ViewPagerViewPager.setCurrentItem(0); break; case R.id.E1_ViewPager_RadioButton2: E1ViewPagerViewPager.setCurrentItem(1); break; case R.id.E1_ViewPager_RadioButton3: E1ViewPagerViewPager.setCurrentItem(2); break; case R.id.E1_ViewPager_RadioButton4: E1ViewPagerViewPager.setCurrentItem(3); break; } } }); } 

}

pager 对应的xml布局

<?xml version="1.0" encoding="utf-8"?>










<android.support.v4.view.ViewPager
android:layout_width=“match_parent”
android:layout_height=“match_parent”
android:layout_below="@id/E1_ViewPager_TextView"
android:layout_above="@id/E1_ViewPager_RadioGroup"
android:id="@+id/E1_ViewPager_ViewPager"
>

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

fragment对应的Java代码

package com.example.month7day11.Evening1;

import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.month7day11.R;

/

  • A simple {@link Fragment} subclass.
  • Activities that contain this fragment must implement the
  • {@link E1_Fragment.OnFragmentInteractionListener} interface
  • to handle interaction events.
  • Use the {@link E1_Fragment#newInstance} factory method to
  • create an instance of this fragment.
  • 布局中的fragment
    */
    public class E1_Fragment extends Fragment {
    //初始化控件。
    private ImageView E1FragmentImageView;
    private TextView E1FragmentTextView;

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = “param1”;
    private static final String ARG_PARAM2 = “param2”;

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    private OnFragmentInteractionListener mListener;

    public E1_Fragment() {
    // Required empty public constructor
    }

    /

    • Use this factory method to create a new instance of
    • this fragment using the provided parameters.
    • @param param1 Parameter 1.
    • @param param2 Parameter 2.
    • @return A new instance of fragment E1_Fragment.
      */
      // TODO: Rename and change types and number of parameters
      public static E1_Fragment newInstance(String param1, String param2) {
      E1_Fragment fragment = new E1_Fragment();
      Bundle args = new Bundle();
      args.putString(ARG_PARAM1, param1);
      args.putString(ARG_PARAM2, param2);
      fragment.setArguments(args);
      return fragment;
      }

    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

     if (getArguments() != null) { mParam1 = getArguments().getString(ARG_PARAM1); mParam2 = getArguments().getString(ARG_PARAM2); } 

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    //填充器获取视图对象。
    View fragment = inflater.inflate(R.layout.fragment_e1_, container, false);
    E1FragmentImageView = fragment.findViewById(R.id.E1_fragment_imageView);
    E1FragmentTextView = fragment.findViewById(R.id.E1_fragment_textView);
    //获取传过来的数据。
    Bundle bun = getArguments();
    String text = bun.getString(“text”);
    int image = bun.getInt(“image”);
    //设置数据。
    E1FragmentImageView.setImageResource(image);
    E1FragmentTextView.setText(text);
    return fragment;
    }

    // TODO: Rename method, update argument and hook method into UI event
    public void onButtonPressed(Uri uri) {
    if (mListener != null) {
    mListener.onFragmentInteraction(uri);
    }
    }

    @Override
    public void onAttach(Context context) {
    super.onAttach(context);
    // if (context instanceof OnFragmentInteractionListener) {
    // mListener = (OnFragmentInteractionListener) context;
    // } else {
    // throw new RuntimeException(context.toString()
    // + " must implement OnFragmentInteractionListener");
    // }

    }

    @Override
    public void onDetach() {
    super.onDetach();
    mListener = null;
    }

    /

    • This interface must be implemented by activities that contain this
    • fragment to allow an interaction in this fragment to be communicated
    • to the activity and potentially other fragments contained in that
    • activity.
    • See the Android Training lesson <a href=
    • “http://developer.android.com/training/basics/fragments/communicating.html”
    • Communicating with Other Fragments for more information.
      */
      public interface OnFragmentInteractionListener {
      // TODO: Update argument type and name
      void onFragmentInteraction(Uri uri);
      }
      }

fragment对应的布局

<?xml version="1.0" encoding="utf-8"?>

<!-- TODO: Update blank fragment layout --> <!--显示图片--> <ImageView android:layout_width="match_parent" android:layout_height="wrap_content" android:adjustViewBounds="true" android:id="@+id/E1_fragment_imageView" /> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:textColor="#9C27B0" android:textSize="50sp" android:gravity="center" android:layout_below="@id/E1_fragment_imageView" android:id="@+id/E1_fragment_textView" /> 
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