【济南中心】Android课程同步笔记Day2：智慧北京-项目实现

【济南中心】Android课程同步笔记Day2：智慧北京-项目实现Splash界面动画效果分析：全屏显示执行旋转、缩放、透明度改变动画动画执行完成后，进入引导界面文件AndroidManifest.xml：<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="/apk/res/android"package="com.itheima.zhbj"><applicationandroid:allowBackup="true"android:icon="@drawable/icon_150"android:label="@string/app_name"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".activity.SplashActivity"android:theme="@android:style/Theme.NoTitleBar.Fullscreen"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="UNCHER" /> </intent-filter></activity><activity android:name=".activity.GuideActivity"/><activity android:name=".activity.MainActivity"android:theme="@android:style/Theme.NoTitleBar"/></application></manifest>执行动画package com.itheima.zhbj.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.view.animation.AlphaAnimation; import android.view.animation.Animation; import android.view.animation.AnimationSet; import android.view.animation.RotateAnimation; import android.view.animation.ScaleAnimation; import android.widget.RelativeLayout;import com.itheima.zhbj.R;import com.itheima.zhbj.utils.Constant;import com.itheima.zhbj.utils.SPUtils;import butterknife.BindView;import butterknife.ButterKnife;public class SplashActivity extends Activity implements Animation.AnimationListener {@BindView(R.id.rl)RelativeLayout rl;private Handler mHandler = new Handler();@Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);setContentView(yout.activity_splash);ButterKnife.bind(this);Animation animation = createAnimation();rl.startAnimation(animation);//监听动画animation.setAnimationListener(this);}//创建动画private Animation createAnimation(){AnimationSet set = new AnimationSet(false);//旋转RotateAnimation rotate = newRotateAnimation(0,360,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO _SELF,0.5f);rotate.setDuration(2000);//缩放ScaleAnimation scale = newScaleAnimation(0,1,0,1,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_ SELF,0.5f);scale.setDuration(2000);//透明度AlphaAnimation alpha = new AlphaAnimation(0,1);alpha.setDuration(1000);set.addAnimation(rotate);set.addAnimation(scale);set.addAnimation(alpha);return set;}@Overridepublic void onAnimationStart(Animation animation) {}//动画执行后调用@Overridepublic void onAnimationEnd(Animation animation) {//延时2s进入向导界面GuideActivity 该方法在主线程发送一个延时的消息 mHandler.postDelayed(new MyTask(),2000);}@Overridepublic void onAnimationRepeat(Animation animation) {}private class MyTask implements Runnable{@Overridepublic void run() {boolean has_guide = SPUtils.getBoolean(getApplicationContext(), Constant.KEY_HAS_GUIDE,false);if(has_guide){//进入主界面Intent intent = new Intent(getApplicationContext(),MainActivity.class);startActivity(intent);}else{//进入向导界面Intent intent = new Intent(getApplicationContext(),GuideActivity.class);startActivity(intent);}finish();}}}添加动画监听，执行跳转package com.itheima.zhbj.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.view.animation.AnimationSet;import android.view.animation.RotateAnimation; import android.view.animation.ScaleAnimation;import android.widget.RelativeLayout;import com.itheima.zhbj.R;import com.itheima.zhbj.utils.Constant;import com.itheima.zhbj.utils.SPUtils;import butterknife.BindView;import butterknife.ButterKnife;public class SplashActivity extends Activity implements Animation.AnimationListener {@BindView(R.id.rl)RelativeLayout rl;private Handler mHandler = new Handler();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(yout.activity_splash);ButterKnife.bind(this);Animation animation = createAnimation();rl.startAnimation(animation);//监听动画animation.setAnimationListener(this);}//创建动画private Animation createAnimation(){AnimationSet set = new AnimationSet(false);//旋转RotateAnimation rotate = newRotateAnimation(0,360,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO _SELF,0.5f);rotate.setDuration(2000);//缩放ScaleAnimation scale = newScaleAnimation(0,1,0,1,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_ SELF,0.5f);scale.setDuration(2000);//透明度AlphaAnimation alpha = new AlphaAnimation(0,1);alpha.setDuration(1000);set.addAnimation(rotate);set.addAnimation(scale);set.addAnimation(alpha);return set;}@Overridepublic void onAnimationStart(Animation animation) {}//动画执行后调用@Overridepublic void onAnimationEnd(Animation animation) {//延时2s进入向导界面GuideActivity 该方法在主线程发送一个延时的消息 mHandler.postDelayed(new MyTask(),2000);}@Overridepublic void onAnimationRepeat(Animation animation) {}private class MyTask implements Runnable{@Overridepublic void run() {boolean has_guide = SPUtils.getBoolean(getApplicationContext(), Constant.KEY_HAS_GUIDE,false);if(has_guide){//进入主界面Intent intent = new Intent(getApplicationContext(),MainActivity.class);startActivity(intent);}else{//进入向导界面Intent intent = new Intent(getApplicationContext(),GuideActivity.class);startActivity(intent);}finish();}}}向导界面的ViewPager打开【文件activity_guide.xml】，引入Viewpager控件<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><android.support.v4.view.ViewPagerandroid:id="@+id/vp"android:layout_width="match_parent"android:layout_height="match_parent"></android.support.v4.view.ViewPag er></RelativeLayout>去除标题和状态栏public class GuideActivity extends Activity implementsViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2, R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);}}初始化ViewPager和数据，动态创建图片public class GuideActivity extends Activity implementsViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2,R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();}//初始化ViewPager的数据private void initViewPager() {views = new ArrayList<>();for (int resId : imgs) {ImageView iv = new ImageView(this);iv.setBackgroundResource(resId);views.add(iv);}}}创建适配器，加载图片public class GuideVPAdapter extends PagerAdapter { private List<ImageView> views;public GuideVPAdapter(List<ImageView> views) { this.views = views;}@Overridepublic int getCount() {return views.size();}@Overridepublic boolean isViewFromObject(View view, Object object) {return view == object;}@Overridepublic Object instantiateItem(ViewGroup container, int position) {View view = views.get(position);container.addView(view);return view;}@Overridepublic void destroyItem(ViewGroup container, int position, Object object) { container.removeView((View) object);}}绑定Viewpagerpackage com.itheima.zhbj.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.support.v4.view.ViewPager;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;public class GuideActivity extends Activity implements ViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2,R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();initGrayPoint();}//动态的创建灰色的点private void initGrayPoint() {for (int resId : imgs) {View view = new View(this);view.setBackgroundResource(R.drawable.point_gray_bg);youtParams params = new youtParams(10,10);params.rightMargin = 20;//设置右边距containerGrayPoint.addView(view,params);}}//初始化ViewPager的数据private void initViewPager() {views = new ArrayList<>();for (int resId : imgs) {ImageView iv = new ImageView(this);iv.setBackgroundResource(resId);views.add(iv);}vp.setAdapter(new GuideVPAdapter(views));}}开始体验按钮在布局中添加开始体验按钮<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><android.support.v4.view.ViewPagerandroid:id="@+id/vp"android:layout_width="match_parent"android:layout_height="match_parent"></android.support.v4.view.ViewPag er><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="开始体验"android:id="@+id/bt_start"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:layout_marginBottom="60dp"android:visibility="gone"android:padding="15dp"android:textColor="@color/btn_text_selector"android:background="@drawable/btn_selector"/><RelativeLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_alignParentBottom="true"android:layout_marginBottom="20dp"><LinearLayoutandroid:id="@+id/container_gray_point"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><!--在代码中动态的添加灰色的点--></LinearLayout><!--红色的点--><Viewandroid:id="@+id/red_point"android:layout_width="10dp"android:layout_height="10dp"android:background="@drawable/point_red_bg"/> </RelativeLayout></RelativeLayout>给ViewPager添加滑动监听public class GuideActivity extends Activity implements ViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2,R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();}//初始化ViewPager的数据private void initViewPager() {views = new ArrayList<>();for (int resId : imgs) {ImageView iv = new ImageView(this);iv.setBackgroundResource(resId);views.add(iv);}vp.setAdapter(new GuideVPAdapter(views));//设置页面的滑动监听vp.addOnPageChangeListener(this);}//position:当前滑动页面的下标positionOffset：页面的滑动比率positionOffsetPixels：页面滑动的实际像素@Overridepublic void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}//页面选中的时候调用@Overridepublic void onPageSelected(int position) {if (position == imgs.length - 1) {//显示按钮btStart.setVisibility(View.VISIBLE);} else {//隐藏按钮btStart.setVisibility(View.GONE);}}@Overridepublic void onPageScrollStateChanged(int state) {}}处理ViewPager监听事件/*** Created by Apple on 2016/9/23.*/public class GuideActivity extends Activity implementsViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2, R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();}//初始化ViewPager的数据private void initViewPager() {views = new ArrayList<>();for (int resId : imgs) {ImageView iv = new ImageView(this);iv.setBackgroundResource(resId);views.add(iv);}vp.setAdapter(new GuideVPAdapter(views));//设置页面的滑动监听vp.addOnPageChangeListener(this);}@OnClick(R.id.bt_start)public void onClick() {//进入主界面SPUtils.saveBoolean(this, Constant.KEY_HAS_GUIDE,true);Intent intent = new Intent(this,MainActivity.class);startActivity(intent);finish();}@Overridepublic void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}//页面选中的时候调用@Overridepublic void onPageSelected(int position) {if (position == imgs.length - 1) {//显示按钮btStart.setVisibility(View.VISIBLE);} else {//隐藏按钮btStart.setVisibility(View.GONE);}}@Overridepublic void onPageScrollStateChanged(int state) {}}给开始按钮添加点击事件public class GuideActivity extends Activity implements ViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2, R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();initGrayPoint();}//动态的创建灰色的点private void initGrayPoint() {for (int resId : imgs) {View view = new View(this);view.setBackgroundResource(R.drawable.point_gray_bg);youtParams params = newyoutParams(10,10);params.rightMargin = 20;//设置右边距containerGrayPoint.addView(view,params);}}//初始化ViewPager的数据private void initViewPager() {views = new ArrayList<>();for (int resId : imgs) {ImageView iv = new ImageView(this);iv.setBackgroundResource(resId);views.add(iv);}vp.setAdapter(new GuideVPAdapter(views));//设置页面的滑动监听vp.addOnPageChangeListener(this);}@OnClick(R.id.bt_start)public void onClick() {//进入主界面SPUtils.saveBoolean(this, Constant.KEY_HAS_GUIDE,true); Intent intent = new Intent(this,MainActivity.class);startActivity(intent);finish();}@Overridepublic void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}//页面选中的时候调用@Overridepublic void onPageSelected(int position) {if (position == imgs.length - 1) {//显示按钮btStart.setVisibility(View.VISIBLE);} else {//隐藏按钮btStart.setVisibility(View.GONE);}}@Overridepublic void onPageScrollStateChanged(int state) {}}开始按钮添加状态选择器<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="/apk/res/android"><item android:state_pressed="true"android:drawable="@drawable/button_red_pressed"/><item android:drawable="@drawable/button_red_normal"/></selector>给按钮添加文字颜色选择器<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="/apk/res/android"> <item android:state_pressed="true" android:color="#000"/><item android:color="#fff"/></selector>设置状态选择器<Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="开始体验"android:id="@+id/bt_start"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:layout_marginBottom="60dp"android:visibility="gone"android:padding="15dp"android:textColor="@color/btn_text_selector"android:background="@drawable/btn_selector"/> 创建红色和灰色的小圆点添加布局<RelativeLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_alignParentBottom="true"android:layout_marginBottom="20dp"><LinearLayoutandroid:id="@+id/container_gray_point"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><!--在代码中动态的添加灰色的点--></LinearLayout><!--红色的点--><Viewandroid:id="@+id/red_point"android:layout_width="10dp"android:layout_height="10dp"android:background="@drawable/point_red_bg"/></RelativeLayout>初始化小灰点protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();initGrayPoint();}//动态的创建灰色的点private void initGrayPoint() {for (int resId : imgs) {View view = new View(this);view.setBackgroundResource(R.drawable.point_gray_bg);youtParams params = new youtParams(10,10);params.rightMargin = 20;//设置右边距containerGrayPoint.addView(view,params);}}小红点的移动小红点移动原理：1. 获取第一个小灰点的左边距离containerGrayPoint.getChildAt(0).getLeft()2. 获取第二个小灰点的左边距离containerGrayPoint.getChildAt(1).getLeft()3.两点之间的距离= 第二点的左边距离- 第一个点的左边距离containerGrayPoint.getChildAt(1).getLeft()-llContainer.getChil dAt(0).getLeft();4. 根据移动的百分百，计算小红点当前移动之后的左边距根据当前的ViewPager移动的索引*小红点移动的距离+ 小红点移动距离* 滑动百分比设置ViewPager的滑动监听public class GuideActivity extends Activity implementsViewPager.OnPageChangeListener {private static final String TAG = "GuideActivity";@BindView(R.id.vp)ViewPager vp;@BindView(R.id.bt_start)Button btStart;@BindView(R.id.red_point)View redPoint;@BindView(R.id.container_gray_point)LinearLayout containerGrayPoint;//向导图片private int[] imgs = new int[]{R.drawable.guide_1, R.drawable.guide_2,R.drawable.guide_3};private List<ImageView> views;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去除标题requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(yout.activity_guide);ButterKnife.bind(this);//去除状态栏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);initViewPager();initGrayPoint();}//动态的创建灰色的点private void initGrayPoint() {for (int resId : imgs) {View view = new View(this);view.setBackgroundResource(R.drawable.point_gray_bg);youtParams params = newyoutParams(10,10);params.rightMargin = 20;//设置右边距containerGrayPoint.addView(view,params);}}//初始化ViewPager的数据private void initViewPager() {views = new ArrayList<>();for (int resId : imgs) {ImageView iv = new ImageView(this);iv.setBackgroundResource(resId);views.add(iv);}vp.setAdapter(new GuideVPAdapter(views));//设置页面的滑动监听vp.addOnPageChangeListener(this);}@OnClick(R.id.bt_start)public void onClick() {//进入主界面SPUtils.saveBoolean(this, Constant.KEY_HAS_GUIDE,true);Intent intent = new Intent(this,MainActivity.class);startActivity(intent);finish();}//小灰点之间的宽度private int width;//position:当前滑动页面的下标positionOffset：页面的滑动比率positionOffsetPixels：页面滑动的实际像素@Overridepublic void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {MyLogger.i(TAG,"position:"+position+",positionOffset:"+positionOffset+",po sitionOffsetPixels:"+positionOffsetPixels);if(width == 0){width = containerGrayPoint.getChildAt(1).getLeft() - containerGrayPoint.getChildAt(0).getLeft();MyLogger.i(TAG,"width:"+width);}//修改小红点与相对布局的左边距youtParams params = (youtParams) redPoint.getLayoutParams();params.leftMargin = (int)(position*width + width*positionOffset);redPoint.setLayoutParams(params);}//页面选中的时候调用@Overridepublic void onPageSelected(int position) {if (position == imgs.length - 1) {//显示按钮btStart.setVisibility(View.VISIBLE);} else {//隐藏按钮btStart.setVisibility(View.GONE);}}@Overridepublic void onPageScrollStateChanged(int state) {}}监听onPageScrolled方法，移动小圆点//position:当前滑动页面的下标positionOffset：页面的滑动比率positionOffsetPixels：页面滑动的实际像素@Overridepublic void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {MyLogger.i(TAG,"position:"+position+",positionOffset:"+positionOffset+",posit ionOffsetPixels:"+positionOffsetPixels);if(width == 0){width = containerGrayPoint.getChildAt(1).getLeft() - containerGrayPoint.getChildAt(0).getLeft();MyLogger.i(TAG,"width:"+width);}//修改小红点与相对布局的左边距youtParams params = (youtParams) redPoint.getLayoutParams();params.leftMargin = (int)(position*width + width*positionOffset);redPoint.setLayoutParams(params);}通过首选项记录是否体验过向导、进入主界面封装sp工具public final class SPUtils {private final static String name = "config";private final static int mode = Context.MODE_PRIVATE;/*** 保存首选项* @param context* @param key* @param value*/public static void saveBoolean(Context context,String key,boolean value){ SharedPreferences sp = context.getSharedPreferences(name, mode);Editor edit = sp.edit();edit.putBoolean(key, value);mit();}public static void saveInt(Context context,String key,int value){SharedPreferences sp = context.getSharedPreferences(name, mode);Editor edit = sp.edit();edit.putInt(key, value);mit();}public static void saveString(Context context,String key,String value){SharedPreferences sp = context.getSharedPreferences(name, mode);Editor edit = sp.edit();edit.putString(key, value);mit();}/*** 获取首选项* @param context* @param key* @param defValue* @return*/public static boolean getBoolean(Context context,String key,boolean defValue){SharedPreferences sp = context.getSharedPreferences(name, mode);return sp.getBoolean(key, defValue);}public static int getInt(Context context,String key,int defValue){SharedPreferences sp = context.getSharedPreferences(name, mode);return sp.getInt(key, defValue);}public static String getString(Context context,String key,String defValue){ SharedPreferences sp = context.getSharedPreferences(name, mode);return sp.getString(key, defValue);}}记录开启向导界面@onClick(R.id.btn_start)public void onClick() {SPUtil.saveBoolean(this,Constant.KEY_HAS_GUIDE,true);Intent intent =new Intent(this ,MainActivity.class);startActivity(intent);finish();}在闪屏界面，动画结束之后，根据记录的首选项，跳转界面底部tab的实现布局文件<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><com.itheima.zhbj.view.NoScrollViewPagerandroid:id="@+id/tab_vp"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"/><RadioGroupandroid:id="@+id/rg_tab"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@drawable/bottom_tab_bg"android:gravity="center_vertical"android:orientation="horizontal"><RadioButtonandroid:id="@+id/rb_home"。