Android开发之滑动效果+页面分支跳转

来源：互联网发布：台湾图解gv新域名2017 编辑：程序博客网时间：2024/05/23 01:12

package com.example.dazhong_client;import com.lidroid.xutils.ViewUtils;import com.lidroid.xutils.view.annotation.ViewInject;import com.lidroid.xutils.view.annotation.event.OnClick;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity {    @ViewInject(R.id.btn)    private Button btn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ViewUtils.inject(this);    }    @OnClick(R.id.btn)    public void click(View view){        Toast.makeText(MainActivity.this,"实现了点击控件", Toast.LENGTH_SHORT).show();    }}

package com.example.dazhong_client;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.ImageView;import com.lidroid.xutils.ViewUtils;import com.lidroid.xutils.view.annotation.ViewInject;import com.lidroid.xutils.view.annotation.event.OnClick;public class WelcomeGuideAct extends Activity{    @ViewInject(R.id.welcome_guide_btn)    private Button btn;    @ViewInject(R.id.welcome_pager)    private ViewPager pager;    private List<View> list;    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.welcome_guide);        ViewUtils.inject(this);        initViewPager();    }    @OnClick(R.id.welcome_guide_btn)    public void click(View view){        //页面跳转        startActivity(new Intent(getBaseContext(),MainActivity.class));        finish();    }    //初始化ViewPager的方法    public void initViewPager(){        list=new ArrayList<View>();        ImageView iv=new ImageView(this);        iv.setImageResource(R.drawable.welcome_2);        list.add(iv);        ImageView iv1=new ImageView(this);        iv1.setImageResource(R.drawable.welcome_3);        list.add(iv1);        ImageView iv2=new ImageView(this);        iv2.setImageResource(R.drawable.welcome_4);        list.add(iv2);        pager.setAdapter(new MyPagerAdapter());        //监听ViewPager滑动效果        pager.setOnPageChangeListener(new OnPageChangeListener() {            //选中页面            @Override            public void onPageSelected(int arg0) {                //当选中第三个页面的时候                if(arg0==2){                    btn.setVisibility(View.VISIBLE);                }else{                    btn.setVisibility(View.GONE);                }            }            //滑动页面            @Override            public void onPageScrolled(int arg0, float arg1, int arg2) {            }            //页面滑动状态改变            @Override            public void onPageScrollStateChanged(int arg0) {            }        });    }    //定义ViewPager的适配器    class MyPagerAdapter extends PagerAdapter{        //计算需要多少item显示        @Override        public int getCount() {            // TODO Auto-generated method stub            return  list.size();        }        @Override        public boolean isViewFromObject(View arg0, Object arg1) {            // TODO Auto-generated method stub            return arg0==arg1;        }        //初始化ITEM实例的方法        public Object instantiateItem(ViewGroup container,int position){            container.addView(list.get(position));            return list.get(position);        }//      销毁ITEM实例的方法        @Override        public void destroyItem(ViewGroup container, int position, Object object) {            // TODO Auto-generated method stub            //super.destroyItem(container, position, object);            container.removeView(list.get(position));        }    }}

package com.example.dazhong_client;

import com.example.dazhong_client.utils.SharedUtils;import android.app.Activity;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.os.Handler;import android.os.Message;public class WelcomStartAct extends Activity{    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.welcome);        new Handler(new Handler.Callback() {            //处理接收到的消息的方法            @Override            public boolean handleMessage(Message arg0) {                //实现页面跳转                if(SharedUtils.getWelcomeBoolean(getBaseContext()))//不是第一次启动                {                    startActivity(new Intent(getApplicationContext(),MainActivity.class));                }                else{                    startActivity(new Intent(getApplicationContext(),WelcomeGuideAct.class));                    //保持访问记录                    SharedUtils.putWelcomeBoolean(getBaseContext(), true);                }                finish();                return false;            }        }).sendEmptyMessageDelayed(0, 3000); //表示延时三秒进行任务的执行        //使用JAVA中的定时器进行处理//      Timer timer=new Timer();//      timer.schedule(new Task(), 3000); // 定时器延时执行任务方法    }//  class Task extends TimerTask{//      @Override//      public void run() {//          //实现页面跳转//          startActivity(new Intent(getApplicationContext(),MainActivity.class));//          //      }//  }}

 package com.example.dazhong_client.utils;import android.content.Context;import android.content.SharedPreferences.Editor;// 实现标记的写入预读取public class SharedUtils {    private static final String FILE_NAME="dianping";    private static final String MODE_NAME="welcome";    //获取boolean类型的值    public static boolean getWelcomeBoolean(Context context){        return context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE).getBoolean(MODE_NAME, false);    }    //写入boolean类型的值    public static void putWelcomeBoolean(Context context,boolean isFirst){        Editor editor=context.getSharedPreferences(FILE_NAME, Context.MODE_APPEND).edit();        editor.putBoolean(MODE_NAME,isFirst);        editor.commit();    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"     android:background="@drawable/welcome_1"></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <android.support.v4.view.ViewPager        android:id="@+id/welcome_pager"        android:layout_width="match_parent"        android:layout_height="match_parent"/>    <Button        android:id="@+id/welcome_guide_btn"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_marginBottom="46dp"        android:paddingLeft="30dp"        android:paddingRight="30dp"        android:visibility="gone"        android:text="点击立即进入"         /></RelativeLayout>

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <Button        android:id="@+id/btn"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/textView1"        android:layout_centerHorizontal="true"        android:layout_marginTop="107dp"        android:text="点击实现效果" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.dazhong_client"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="16"        android:targetSdkVersion="16" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.dazhong_client.WelcomStartAct"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name="com.example.dazhong_client.MainActivity"></activity>        <activity android:name="com.example.dazhong_client.WelcomeGuideAct">        </activity>    </application></manifest>

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