一 效果
由于有错误 无法运行
二 核心代码
- 1.HealthActivity.java
- package com.example.walkersimulate;
- import java.util.ArrayList;
- import java.util.List;
- import android.os.Bundle;
- import android.annotation.SuppressLint;
- import android.app.ActionBar.LayoutParams;
- import android.app.Activity;
- import android.support.v4.view.ViewPager;
- import android.support.v4.view.ViewPager.OnPageChangeListener;
- import android.util.DisplayMetrics;
- import android.view.Display;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.ImageView;
- import android.widget.LinearLayout;
- import android.widget.TextView;
- @SuppressLint("NewApi")
- public class HealthActivity extends Activity
- {
- private int currIndex;// 当前页卡编号
- private TextView tvCursor;
- private TextView tvHealthNews;
- private TextView tvIllnessDefense;
- private ViewPager vpHealth;
- private ImageView ivHealthBack;
- @Override
- protected void onCreate(Bundle savedInstanceState)
- {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_health);
- initViews();
- initCursor();
- initViewPager();
- setListeners();
- }
- private void initViews()
- {
- ivHealthBack = (ImageView) findViewById(R.id.icons_health_back);
- tvCursor = (TextView) findViewById(R.id.cursor);
- tvHealthNews = (TextView) findViewById(R.id.tv_healthnews);
- tvIllnessDefense = (TextView) findViewById(R.id.tv_healthill);
- vpHealth = (ViewPager) findViewById(R.id.viewpager);
- }
- private void initCursor()
- {
- Display display = getWindow().getWindowManager().getDefaultDisplay();
- DisplayMetrics metrics = new DisplayMetrics();
- display.getMetrics(metrics);
- // 取得手机屏幕宽度的一半
- int tabLineLength = metrics.widthPixels / 2;
- // 设置游标的宽度为屏幕宽度的一半
- LayoutParams lp = (LayoutParams) tvCursor.getLayoutParams();
- lp.width = tabLineLength;
- tvCursor.setLayoutParams(lp);
- }
- private void initViewPager()
- {
- vpHealth = (ViewPager) findViewById(R.id.viewpager);
- List<View> views = new ArrayList<View>();
- views.add(new HealthWebView(this)
- .getView("http://cms.hxky.cn/wap/jkxz/"));
- views.add(new HealthWebView(this)
- .getView("http://cms.hxky.cn/wap/jbfz/"));
- vpHealth.setAdapter(new HealthViewPagerAdapter(views));
- // 给 ViewPager 设置适配器
- vpHealth.setCurrentItem(0);// 设置当前显示标签页为第一页
- }
- private void setListeners()
- {
- // 返回按钮
- ivHealthBack.setOnClickListener(new OnClickListener()
- {
- public void onClick(View arg0)
- {
- finish();
- }
- });
- // 点击健康须知
- tvHealthNews.setOnClickListener(new OnClickListener()
- {
- public void onClick(View view)
- {
- vpHealth.setCurrentItem(0);
- }
- });
- // 点击疾病防治
- tvIllnessDefense.setOnClickListener(new OnClickListener()
- {
- public void onClick(View view)
- {
- vpHealth.setCurrentItem(1);
- }
- });
- vpHealth.setOnPageChangeListener(new OnPageChangeListener()
- {
- public void onPageSelected(int position)
- {
- currIndex = position;
- }
- public void onPageScrolled(int position, float percent, int ag2)
- {
- LinearLayout.LayoutParams ll = (android.widget.LinearLayout.LayoutParams) tvCursor
- .getLayoutParams();
- if (currIndex == position)
- {
- ll.leftMargin = (int) (currIndex * tvCursor.getWidth() + percent
- * tvCursor.getWidth());
- } else if (currIndex > position)
- {
- ll.leftMargin = (int) (currIndex * tvCursor.getWidth() - (1 - percent)
- * tvCursor.getWidth());
- }
- tvCursor.setLayoutParams(ll);
- }
- public void onPageScrollStateChanged(int position)
- {
- }
- });
- }
- }
- 2.HealthViewPagerAdapter.java
- package com.example.walkersimulate;
- import java.util.List;
- import android.view.View;
- import android.view.ViewGroup;
- public class HealthViewPagerAdapter
- {
- <span style="white-space:pre"> </span>private List<View> viewList;
- <span style="white-space:pre"> </span>public HealthViewPagerAdapter(List<View> viewList)
- <span style="white-space:pre"> </span>{
- <span style="white-space:pre"> </span>this.viewList = viewList;
- <span style="white-space:pre"> </span>}
- <span style="white-space:pre"> </span>public int getCount()
- <span style="white-space:pre"> </span>{
- <span style="white-space:pre"> </span>return viewList.size();
- <span style="white-space:pre"> </span>}
- <span style="white-space:pre"> </span>public boolean isViewFromObject(View view, Object object)
- <span style="white-space:pre"> </span>{
- <span style="white-space:pre"> </span>return view == object;
- <span style="white-space:pre"> </span>}
- <span style="white-space:pre"> </span>public Object instantiateItem(ViewGroup container, int position)
- <span style="white-space:pre"> </span>{
- <span style="white-space:pre"> </span>container.addView(viewList.get(position));
- <span style="white-space:pre"> </span>return viewList.get(position);
- <span style="white-space:pre"> </span>}
- <span style="white-space:pre"> </span>public void destroyItem(ViewGroup container, int position, Object object)
- <span style="white-space:pre"> </span>{
- <span style="white-space:pre"> </span>container.removeView(viewList.get(position));
- <span style="white-space:pre"> </span>}
- }
- 3.HealthWebView.java
- package com.example.walkersimulate;
- import android.annotation.SuppressLint;
- import android.content.Context;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.webkit.WebView;
- import android.webkit.WebViewClient;
- public class HealthWebView{
- <span style="white-space:pre"> </span>private Context context;
- <span style="white-space:pre"> </span>public HealthWebView(Context context) {
- <span style="white-space:pre"> </span>this.context = context;
- <span style="white-space:pre"> </span>}
- <span style="white-space:pre"> </span>@SuppressLint("SetJavaScriptEnabled")
- <span style="white-space:pre"> </span>public View getView(String url) {
- <span style="white-space:pre"> </span>View view = LayoutInflater.from(context).inflate(
- <span style="white-space:pre"> </span>R.layout.pagerofhealth, null);
- <span style="white-space:pre"> </span>WebView webView = (WebView) view.findViewById(R.id.wvHealth);
- <span style="white-space:pre"> </span>webView.loadUrl(url);
- <span style="white-space:pre"> </span>// 设置支持 JavaScript 脚本
- <span style="white-space:pre"> </span>webView.getSettings().setJavaScriptEnabled(true);
- <span style="white-space:pre"> </span>/**
- <span style="white-space:pre"> </span>* 禁止系统浏览器打开页面
- <span style="white-space:pre"> </span>*/
- <span style="white-space:pre"> </span>webView.setWebViewClient(new WebViewClient() {
- <span style="white-space:pre"> </span>public boolean shouldOverrideUrlLoading(WebView view, String url) {
- <span style="white-space:pre"> </span>view.loadUrl(url);
- <span style="white-space:pre"> </span>return true;
- <span style="white-space:pre"> </span>}
- <span style="white-space:pre"> </span>});
- <span style="white-space:pre"> </span>return view;
- <span style="white-space:pre"> </span>}
- }
- 4.activity_health.xml
- <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=".HealthActivity" >
- <include layout="@layout/health_layout_titlebar" />
- <LinearLayout
- android:layout_width="match_parent"
- android:layout_height="wrap_content" >
- <!-- 健康新知 -->
- <TextView
- android:id="@+id/tv_healthnews"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_gravity="center"
- android:layout_weight="1"
- android:gravity="center"
- android:padding="6dp"
- android:text="@string/healthnews"
- android:textSize="18sp" />
- <!-- 疾病防治 -->
- <TextView
- android:id="@+id/tv_healthill"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_gravity="center"
- android:layout_weight="1"
- android:gravity="center"
- android:padding="6dp"
- android:text="@string/illdefense"
- android:textSize="18sp" />
- </LinearLayout>
- <TextView
- android:id="@+id/cursor"
- android:layout_width="125dp"
- android:layout_height="5dp"
- android:layout_marginLeft="20dp"
- android:background="#990033" />
- <android.support.v4.view.ViewPager
- android:id="@+id/viewpager"
- android:layout_width="match_parent"
- android:layout_height="match_parent" />
- </LinearLayout>
- 5.health_layout_titlebar.xml
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:background="@drawable/titlebar_bg" >
- <ImageView
- android:id="@+id/icons_health_back"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_gravity="center"
- android:gravity="center"
- android:paddingLeft="6dp"
- android:src="@drawable/icons_health_back" />
- <TextView
- android:id="@+id/title"
- android:layout_width="0dp"
- android:layout_height="wrap_content"
- android:layout_gravity="center"
- android:layout_weight="1"
- android:gravity="center"
- android:text="健康"
- android:textColor="#ffffff"
- android:textSize="15sp" />
- </LinearLayout>
三 总结
通过这次练习,学会了一些UI布局的应用,让UI页面更加的多彩 ,虽然没能成功达到实验预想的效果,但也学到了一些方法和流程。
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