筆者之前已經做過了一個使用viewpgaer輪播效果的博客,但是viewpager本身也是深受androider的喜愛,如今基本每個app都會用到相關的功能,本篇文章也是講一下用viewpager做主界面的用法。(筆者對viewpager的學習也是比較曲折,網上各種找不到符合自己功能的代碼)
筆者之後又學習了viewpager+fragment的使用,地址爲:http://blog.csdn.net/double2hao/article/details/50450377
主要功能:(源碼在文章最後)
1、滑動的同時改變標題欄
2、點擊標題欄的同時滑動
效果:
主要文件:
MainActivity:
- import android.app.Activity;
- import android.app.LocalActivityManager;
- import android.content.Intent;
- import android.os.Bundle;
- import android.support.v4.view.ViewPager;
- import android.support.v4.view.ViewPager.OnPageChangeListener;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.ImageView;
- import java.util.ArrayList;
- import java.util.List;
- public class MainActivity extends Activity {
- //控件
- private ImageView img1, img2, img3, img4;
- private ViewPager vp;
- //LocalActivityManager用來獲取每個activity的view,放於Adapter中
- //MyViewPageAdapter用來放viewpager的內容
- //OnClickListener設置底部圖片的點擊事件
- //OnPageChangeListener設置圖片的滑動事件
- private LocalActivityManager manager;
- private MyViewPageAdapter viewPageAdapter;
- private OnClickListener clickListener;
- private OnPageChangeListener pageChangeListener;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- manager = new LocalActivityManager(this, true);
- manager.dispatchCreate(savedInstanceState);
- vp = (ViewPager) findViewById(R.id.viewpager);
- InitView();
- }
- private void InitView() {
- // TODO Auto-generated method stub
- img1 = (ImageView) findViewById(R.id.main_img1);
- img2 = (ImageView) findViewById(R.id.main_img2);
- img3 = (ImageView) findViewById(R.id.main_img3);
- img4 = (ImageView) findViewById(R.id.main_img4);
- clickListener = new OnClickListener() {
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- switch (v.getId()) {
- case R.id.main_img1:
- vp.setCurrentItem(0);
- break;
- case R.id.main_img2:
- vp.setCurrentItem(1);
- break;
- case R.id.main_img3:
- vp.setCurrentItem(2);
- break;
- case R.id.main_img4:
- vp.setCurrentItem(3);
- break;
- }
- }
- };
- img1.setOnClickListener(clickListener);
- img2.setOnClickListener(clickListener);
- img3.setOnClickListener(clickListener);
- img4.setOnClickListener(clickListener);
- InitPager();
- }
- private void InitPager() {
- // TODO Auto-generated method stub
- pageChangeListener = new OnPageChangeListener() {
- @Override
- public void onPageSelected(int arg0) {
- // TODO Auto-generated method stub
- switch (arg0) {
- case 0:
- img1.setImageResource(R.drawable.main_icon1_1);
- img2.setImageResource(R.drawable.main_icon2_2);
- img3.setImageResource(R.drawable.main_icon3_2);
- img4.setImageResource(R.drawable.main_icon4_2);
- break;
- case 1:
- img1.setImageResource(R.drawable.main_icon1_2);
- img2.setImageResource(R.drawable.main_icon2_1);
- img3.setImageResource(R.drawable.main_icon3_2);
- img4.setImageResource(R.drawable.main_icon4_2);
- break;
- case 2:
- img1.setImageResource(R.drawable.main_icon1_2);
- img2.setImageResource(R.drawable.main_icon2_2);
- img3.setImageResource(R.drawable.main_icon3_1);
- img4.setImageResource(R.drawable.main_icon4_2);
- break;
- case 3:
- img1.setImageResource(R.drawable.main_icon1_2);
- img2.setImageResource(R.drawable.main_icon2_2);
- img3.setImageResource(R.drawable.main_icon3_2);
- img4.setImageResource(R.drawable.main_icon4_1);
- break;
- }
- }
- @Override
- public void onPageScrolled(int arg0, float arg1, int arg2) {
- // TODO Auto-generated method stub
- }
- @Override
- public void onPageScrollStateChanged(int arg0) {
- // TODO Auto-generated method stub
- }
- };
- AddActivitiesToViewPager();
- vp.setCurrentItem(0);
- vp.setOnPageChangeListener(pageChangeListener);
- }
- private void AddActivitiesToViewPager() {
- List<View> mViews = new ArrayList<View>();
- Intent intent = new Intent();
- intent.setClass(this, Activity_one.class);
- intent.putExtra("id", 1);
- mViews.add(getView("QualityActivity1", intent));
- intent.setClass(this, Activity_two.class);
- intent.putExtra("id", 2);
- mViews.add(getView("QualityActivity2", intent));
- intent.setClass(this, Activity_three.class);
- intent.putExtra("id", 3);
- mViews.add(getView("QualityActivity3", intent));
- intent.setClass(this, Activity_four.class);
- intent.putExtra("id", 4);
- mViews.add(getView("QualityActivity4", intent));
- viewPageAdapter = new MyViewPageAdapter(mViews);
- vp.setAdapter(viewPageAdapter);
- }
- private View getView(String id, Intent intent) {
- return manager.startActivity(id, intent).getDecorView();
- }
- }
MyViewPagerAdapter:
- import android.support.v4.view.PagerAdapter;
- import android.view.View;
- import android.view.ViewGroup;
- import java.io.Serializable;
- import java.util.List;
- public class MyViewPageAdapter extends PagerAdapter implements Serializable {
- private List<View> views;
- public MyViewPageAdapter(List<View> views) {
- this.views = views;
- }
- @Override
- public int getCount() {
- return views.size();
- }
- @Override
- public boolean isViewFromObject(View arg0, Object arg1) {
- return arg0 == arg1;
- }
- @Override
- public void destroyItem(ViewGroup container, int position, Object object) {
- container.removeView(views.get(position));
- }
- @Override
- public Object instantiateItem(ViewGroup container, int position) {
- container.addView(views.get(position), 0);
- return views.get(position);
- }
- }
Activity_one:
- import android.app.Activity;
- import android.os.Bundle;
- public class Activity_one extends Activity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.layout1);
- }
- }
activity_main:
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:background="#F5F3F2">
- <android.support.v4.view.ViewPager
- android:id="@+id/viewpager"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:layout_above="@+id/titile" />
- <LinearLayout
- android:id="@+id/titile"
- android:layout_width="match_parent"
- android:layout_height="70dp"
- android:layout_alignParentBottom="true"
- android:background="@drawable/tabbar_bg"
- android:orientation="horizontal">
- <ImageView
- android:id="@+id/main_img1"
- android:layout_width="0dp"
- android:layout_height="match_parent"
- android:layout_weight="1"
- android:src="@drawable/main_icon1_1" />
- <ImageView
- android:id="@+id/main_img2"
- android:layout_width="0dp"
- android:layout_height="match_parent"
- android:layout_weight="1"
- android:src="@drawable/main_icon2_2" />
- <ImageView
- android:id="@+id/main_img3"
- android:layout_width="0dp"
- android:layout_height="match_parent"
- android:layout_weight="1"
- android:src="@drawable/main_icon3_2" />
- <ImageView
- android:id="@+id/main_img4"
- android:layout_width="0dp"
- android:layout_height="match_parent"
- android:layout_weight="1"
- android:src="@drawable/main_icon4_2" />
- </LinearLayout>
- </RelativeLayout>
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical" android:layout_width="match_parent"
- android:layout_height="match_parent">
- <Button
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="pager1"
- android:textSize="30sp"/>
- </LinearLayout>