十八、Android引导界面

2021-10-29 07:18:33

一、所需素材

      很有必要整理一下,里面附带友盟的社会化分享组件，我就不去掉了。

十八、Android引导界面十八、Android引导界面

十八、Android引导界面十八、Android引导界面十八、Android引导界面十八、Android引导界面十八、Android引导界面十八、Android引导界面十八、Android引导界面

二、代码



import com.umeng.update.UmengUpdateAgent;





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 SplashActivity extends Activity {



	



	private final int SPLASH_DISPLAY_LENGHT = 3000; // 延迟3秒  



	boolean isFirstIn = false;



    private static final int GO_HOME = 1000;



    private static final int GO_GUIDE = 1001;



    private static final String SHAREDPREFERENCES_NAME = "first_pref"; 



    



    @Override  



    protected void onCreate(Bundle savedInstanceState) {  



        super.onCreate(savedInstanceState);  



        setContentView(R.layout.activity_splash);  



        UmengUpdateAgent.update(this);



        init(); 



  



    }



    



    private Handler mHandler = new Handler() {





        @Override



        public void handleMessage(Message msg) {



            switch (msg.what) {



            case GO_HOME:



                goHome();



                break;



            case GO_GUIDE:



                goGuide();



                break;



            }



            super.handleMessage(msg);



        }



    };



    



    private void init() {



        // 读取SharedPreferences中需要的数据



        // 使用SharedPreferences来记录程序的使用次数



        SharedPreferences preferences = getSharedPreferences(



                SHAREDPREFERENCES_NAME, MODE_PRIVATE);





        // 取得相应的值，如果没有该值，说明还未写入，用true作为默认值



        isFirstIn = preferences.getBoolean("isFirstIn", true);





        // 判断程序与第几次运行，如果是第一次运行则跳转到引导界面，否则跳转到主界面



        if (!isFirstIn) {



            // 使用Handler的postDelayed方法，3秒后执行跳转到MainActivity



            mHandler.sendEmptyMessageDelayed(GO_HOME, SPLASH_DISPLAY_LENGHT);



        } else {



            mHandler.sendEmptyMessageDelayed(GO_GUIDE, SPLASH_DISPLAY_LENGHT);



           // preferences.edit().putBoolean("isFirstIn",false).commit();



        }





    }



    



    private void goGuide() {



        Intent intent = new Intent(SplashActivity.this, GuideActivity.class);



        SplashActivity.this.startActivity(intent);



        SplashActivity.this.finish();



    }



    private void goHome() {



        Intent intent = new Intent(SplashActivity.this, MainActivity.class);



        SplashActivity.this.startActivity(intent);



        SplashActivity.this.finish();



    }





}





<?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:background="@drawable/weather_bg"



    android:orientation="vertical" >



    





</LinearLayout>





import java.util.ArrayList;



import java.util.List;





import android.app.Activity;



import android.os.Bundle;



import android.support.v4.view.ViewPager;



import android.support.v4.view.ViewPager.OnPageChangeListener;



import android.view.LayoutInflater;



import android.view.View;



import android.widget.ImageView;



import android.widget.LinearLayout;





public class GuideActivity extends Activity implements OnPageChangeListener {





    private ViewPager vp;



    private ViewPagerAdapter vpAdapter;



    private List<View> views;





    // 底部小点图片



    private ImageView[] dots;





    // 记录当前选中位置



    private int currentIndex;





    @Override



    protected void onCreate(Bundle savedInstanceState) {



        super.onCreate(savedInstanceState);



        setContentView(R.layout.guide);





        // 初始化页面



        initViews();





        // 初始化底部小点



        initDots();



    }





    private void initViews() {



    	/*



    	 * LayoutInflater inflater = getLayoutInflater();  //调用Activity的getLayoutInflater() 



    	 * LayoutInflater localinflater =  (LayoutInflater)context.getSystemService  



  



                                                 (Context.LAYOUT_INFLATER_SERVICE);  //最快



    	 */



        LayoutInflater inflater = LayoutInflater.from(this);





        views = new ArrayList<View>();



        // 初始化引导图片列表



        views.add(inflater.inflate(R.layout.what_new_one, null));



        views.add(inflater.inflate(R.layout.what_new_two, null));



        views.add(inflater.inflate(R.layout.what_new_three, null));



        views.add(inflater.inflate(R.layout.what_new_four, null));





        // 初始化Adapter



        vpAdapter = new ViewPagerAdapter(views, this);





        vp = (ViewPager) findViewById(R.id.viewpager);



        vp.setAdapter(vpAdapter);



        // 绑定回调



        vp.setOnPageChangeListener(this);



    }





    private void initDots() {



        LinearLayout ll = (LinearLayout) findViewById(R.id.ll);





        dots = new ImageView[views.size()];





        // 循环取得小点图片



        for (int i = 0; i < views.size(); i++) {



            dots[i] = (ImageView) ll.getChildAt(i);



            dots[i].setEnabled(true);// 都设为灰色



        }





        currentIndex = 0;



        dots[currentIndex].setEnabled(false);// 设置为白色，即选中状态



    }





    private void setCurrentDot(int position) {



        if (position < 0 || position > views.size() - 1



                || currentIndex == position) {



            return;



        }





        dots[position].setEnabled(false);



        dots[currentIndex].setEnabled(true);





        currentIndex = position;



    }





    // 当滑动状态改变时调用



    @Override



    public void onPageScrollStateChanged(int arg0) {



    }





    // 当当前页面被滑动时调用



    @Override



    public void onPageScrolled(int arg0, float arg1, int arg2) {



    }





    // 当新的页面被选中时调用



    @Override



    public void onPageSelected(int arg0) {



        // 设置底部小点选中状态



        setCurrentDot(arg0);



    }





}




<?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/viewpager"



        android:layout_width="match_parent"



        android:layout_height="match_parent" />





    <LinearLayout



        android:id="@+id/ll"



        android:layout_width="wrap_content"



        android:layout_height="wrap_content"



        android:layout_alignParentBottom="true"



        android:layout_centerHorizontal="true"



        android:layout_marginBottom="24.0dp"



        android:orientation="horizontal" >





        <ImageView



            android:layout_width="wrap_content"



            android:layout_height="wrap_content"



            android:layout_gravity="center_vertical"



            android:clickable="true"



            android:padding="15.0dip"



            android:src="@drawable/dot" />





        <ImageView



            android:layout_width="wrap_content"



            android:layout_height="wrap_content"



            android:layout_gravity="center_vertical"



            android:clickable="true"



            android:padding="15.0dip"



            android:src="@drawable/dot" />





        <ImageView



            android:layout_width="wrap_content"



            android:layout_height="wrap_content"



            android:layout_gravity="center_vertical"



            android:clickable="true"



            android:padding="15.0dip"



            android:src="@drawable/dot" />





        <ImageView



            android:layout_width="wrap_content"



            android:layout_height="wrap_content"



            android:layout_gravity="center_vertical"



            android:clickable="true"



            android:padding="15.0dip"



            android:src="@drawable/dot" />



    </LinearLayout>





</RelativeLayout>




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



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





    <item android:drawable="@drawable/dark_dot" android:state_enabled="true"/>



    <item android:drawable="@drawable/white_dot" android:state_enabled="false"/>





</selector>


 




一二三一样，第四个多一个开始按钮，下面只列举第一第四个


 


<?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" >





    <ImageView



        android:layout_width="match_parent"



        android:layout_height="match_parent"



        android:layout_centerInParent="true"



        android:adjustViewBounds="false"



        android:focusable="true"



        android:scaleType="centerCrop"



        android:background="@drawable/guide1" />





</RelativeLayout>




<?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" >





    <ImageView



        android:layout_width="match_parent"



        android:layout_height="match_parent"



        android:layout_centerInParent="true"



        android:adjustViewBounds="false"



        android:background="@drawable/guide4"



        android:focusable="true"



        android:scaleType="centerCrop" />





    <ImageView



        android:id="@+id/iv_start"



        android:layout_width="wrap_content"



        android:layout_height="wrap_content"



        android:layout_alignParentBottom="true"



        android:layout_centerHorizontal="true"



        android:layout_marginBottom="108dp"



        android:background="@drawable/whats_new_start_btn"



        android:focusable="true" />





</RelativeLayout>




package com.example.helloworld;





import java.util.List;





import android.app.Activity;



import android.content.Context;



import android.content.Intent;



import android.content.SharedPreferences;



import android.content.SharedPreferences.Editor;



import android.os.Parcelable;



import android.support.v4.view.PagerAdapter;



import android.support.v4.view.ViewPager;



import android.view.View;



import android.view.View.OnClickListener;



import android.widget.ImageView;





public class ViewPagerAdapter extends PagerAdapter {





    // 界面列表



    private List<View> views;



    private Activity activity;





    private static final String SHAREDPREFERENCES_NAME = "first_pref";





    public ViewPagerAdapter(List<View> views, Activity activity) {



        this.views = views;



        this.activity = activity;



    }





    // 销毁arg1位置的界面



    @Override



    public void destroyItem(View arg0, int arg1, Object arg2) {



        ((ViewPager) arg0).removeView(views.get(arg1));



    }





    @Override



    public void finishUpdate(View arg0) {



    }





    // 获得当前界面数



    @Override



    public int getCount() {



        if (views != null) {



            return views.size();



        }



        return 0;



    }





    // 初始化arg1位置的界面



    @Override



    public Object instantiateItem(View arg0, int arg1) {



        ((ViewPager) arg0).addView(views.get(arg1), 0);



        if (arg1 == views.size() - 1) {



            ImageView mStartWeiboImageButton = (ImageView) arg0



                    .findViewById(R.id.iv_start);



            mStartWeiboImageButton.setOnClickListener(new OnClickListener() {





                @Override



                public void onClick(View v) {



                    // 设置已经引导



                    setGuided();



                    goHome();





                }





            });



        }



        return views.get(arg1);



    }





    private void goHome() {



        // 跳转



        Intent intent = new Intent(activity, MainActivity.class);



        activity.startActivity(intent);



        activity.finish();



    }





    /**



     * 



     * method desc：设置已经引导过了，下次启动不用再次引导



     */



    private void setGuided() {



        SharedPreferences preferences = activity.getSharedPreferences(



                SHAREDPREFERENCES_NAME, Context.MODE_PRIVATE);



        Editor editor = preferences.edit();



        // 存入数据



        editor.putBoolean("isFirstIn", false);



        // 提交修改



        editor.commit();



    }





    // 判断是否由对象生成界面



    @Override



    public boolean isViewFromObject(View arg0, Object arg1) {



        return (arg0 == arg1);



    }





    @Override



    public void restoreState(Parcelable arg0, ClassLoader arg1) {



    }





    @Override



    public Parcelable saveState() {



        return null;



    }





    @Override



    public void startUpdate(View arg0) {



    }





}





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



<selector



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



    <item android:state_pressed="true" android:drawable="@drawable/butten_pressed" />



    <item android:drawable="@drawable/butten_unpress" />



</selector>


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十八、Android引导界面
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