【Android UI设计与开发】第04期:引导界面(四)仿人人网V5.9.2最新版引导界面
转载请注明出处:http://blog.csdn.net/yangyu20121224/article/details/8988147
这一篇我将会以人人网的引导界面为实例来展开详细的讲解,人人网的引导界面比较的新颖,不同于其他应用程序千篇一律的靠滑动来引导用户,而是以一个一个比较生动形象的动画效果展示在用户们的面前,有一种给人眼前一亮的感觉,话不多说,进入正题。
一、实现的效果图
欢迎界面:
引导界面1
引导界面 2
引导界面 3
二 、项目的目录结构
三、具体的编码实现
1、欢迎界面的xml布局,activity_welcome:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/v5_6_2_welcome" android:orientation="vertical" />
2、引导界面的xml布局,activity_guide.xml:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <ImageView android:id="@+id/iv_guide_picture" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1.0" android:scaleType="fitXY" /> <LinearLayout android:id="@+id/ll_bottom_action_bar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:orientation="horizontal" android:padding="7dip" > <Button android:id="@+id/btn_register" android:layout_width="fill_parent" android:layout_height="45dip" android:layout_weight="1.5" android:background="@drawable/guide_btn_blue" android:gravity="center" android:singleLine="true" android:text="注 册" android:textColor="#FFFFFF" android:textSize="15.0sp" /> <Button android:id="@+id/btn_look_at_the_people_i_know" android:layout_width="fill_parent" android:layout_height="45dip" android:layout_marginLeft="8dip" android:layout_marginRight="8dip" android:layout_weight="1.0" android:background="@drawable/guide_btn_white" android:gravity="center" android:singleLine="true" android:text="看看我认识的人" android:textColor="#000000" android:textSize="15.0sp" /> <Button android:id="@+id/btn_login" android:layout_width="fill_parent" android:layout_height="45dip" android:layout_weight="1.5" android:background="@drawable/guide_btn_blue" android:gravity="center" android:singleLine="true" android:text="登 录" android:textColor="#FFFFFF" android:textSize="15.0sp" /> </LinearLayout> </RelativeLayout>
3、在这里还要创建两个xml资源文件文件来实现自定义按钮的效果,关于自定义按钮的效果实现我会在后面的UI专题详细介绍,这里就不在赘述,guide_btn_blue.xml:
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/v5_0_1_guide_blue_default" android:state_focused="true" android:state_pressed="false"/> <item android:drawable="@drawable/v5_0_1_guide_blue_press" android:state_pressed="true"/> <item android:drawable="@drawable/v5_0_1_guide_blue_default"/> </selector>
guide_btn_white:
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/v5_0_1_guide_black_default" android:state_focused="true" android:state_pressed="false"/> <item android:drawable="@drawable/v5_0_1_guide_black_press" android:state_pressed="true"/> <item android:drawable="@drawable/v5_0_1_guide_black_default"/> </selector>
4、然后是动画效果的xml资源文件,关于自定义动画效果的实现我也会在后面的UI专题中详细介绍,这里也就不再赘述渐入动画资源文件,guide_fade_in.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<alpha android:fromAlpha="0.0"
android:toAlpha="1.0" />
</set>
渐隐动画资源文件,guide_fade_out.xml:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" > <scale android:fillAfter="false" android:fromXScale="1.1" android:fromYScale="1.1" android:interpolator="@android:anim/decelerate_interpolator" android:pivotX="50.0%" android:pivotY="50.0%" android:toXScale="1.1" android:toYScale="1.1" /> <alpha xmlns:android="http://schemas.android.com/apk/res/android" android:fromAlpha="1.0" android:toAlpha="0.0" /> </set>
放大动画资源文件,guide_fade_in_scale:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" > <scale android:fillAfter="false" android:fromXScale="1.0" android:fromYScale="1.0" android:interpolator="@android:anim/decelerate_interpolator" android:pivotX="50.0%" android:pivotY="50.0%" android:toXScale="1.1" android:toYScale="1.1"/> </set>
5、开始启动的欢迎界WelcomeActivity.java:
package com.yangyu.myguideview03; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.CountDownTimer; /** * @author yangyu * 功能描述:欢迎界面Activity(Logo) */ public class WelcomeActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_welcome); /** * millisInFuture:从开始调用start()到倒计时完成并onFinish()方法被调用的毫秒数 * countDownInterval:接收onTick(long)回调的间隔时间 */ new CountDownTimer(5000, 1000) { @Override public void onTick(long millisUntilFinished) { } @Override public void onFinish() { Intent intent = new Intent(WelcomeActivity.this, GuideActivity.class); startActivity(intent); WelcomeActivity.this.finish(); } }.start(); } }
6、引导界面,GuideActivity.java:
package com.yangyu.myguideview03; import android.app.Activity; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.animation.Animation; import android.view.animation.Animation.AnimationListener; import android.view.animation.AnimationUtils; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; /** * @author yangyu * 功能描述:导引界面(每张图片都执行的动画顺序,渐现、放大和渐隐,结束后切换图片和文字 * 又开始执行 渐现、放大和渐隐,当最后一张执行完渐隐,切换到第一张,从而达到循环效果) */ public class GuideActivity extends Activity implements OnClickListener{ //定义注册、登录和看看我认识的人按钮 private Button btnRegister,btnLogin,btnIKnowPeople; //显示图片的ImageView组件 private ImageView ivGuidePicture; //要展示的一组图片资源 private Drawable[] pictures; //每张展示图片要执行的一组动画效果 private Animation[] animations; //当前执行的是第几张图片(资源索引) private int currentItem = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_guide); initView(); initData(); } /** * 初始化组件 */ private void initView(){ //实例化ImageView引导图片 ivGuidePicture = (ImageView) findViewById(R.id.iv_guide_picture); //实例化按钮 btnRegister = (Button) findViewById(R.id.btn_register); btnIKnowPeople = (Button) findViewById(R.id.btn_look_at_the_people_i_know); btnLogin = (Button) findViewById(R.id.btn_login); //实例化引导图片数组 pictures = new Drawable[] { getResources().getDrawable(R.drawable.v5_3_0_guide_pic1),getResources().getDrawable(R.drawable.v5_3_0_guide_pic2), getResources().getDrawable(R.drawable.v5_3_0_guide_pic3)}; //实例化动画效果数组 animations = new Animation[] { AnimationUtils.loadAnimation(this, R.anim.guide_fade_in), AnimationUtils.loadAnimation(this, R.anim.guide_fade_in_scale), AnimationUtils.loadAnimation(this, R.anim.guide_fade_out) }; } /** * 初始化数据 */ private void initData(){ //给按钮设置监听 btnRegister.setOnClickListener(this); btnIKnowPeople.setOnClickListener(this); btnLogin.setOnClickListener(this); //给每个动画效果设置播放时间 animations[0].setDuration(1500); animations[1].setDuration(3000); animations[2].setDuration(1500); //给每个动画效果设置监听事件 animations[0].setAnimationListener(new GuideAnimationListener(0)); animations[1].setAnimationListener(new GuideAnimationListener(1)); animations[2].setAnimationListener(new GuideAnimationListener(2)); //设置图片动画初始化默认值为0 ivGuidePicture.setImageDrawable(pictures[currentItem]); ivGuidePicture.startAnimation(animations[0]); } /** * 实现了动画监听接口,重写里面的方法 */ class GuideAnimationListener implements AnimationListener { private int index; public GuideAnimationListener(int index) { this.index = index; } @Override public void onAnimationStart(Animation animation) { } //重写动画结束时的监听事件,实现了动画循环播放的效果 @Override public void onAnimationEnd(Animation animation) { if (index < (animations.length - 1)) { ivGuidePicture.startAnimation(animations[index + 1]); } else { currentItem++; if (currentItem > (pictures.length - 1)) { currentItem = 0; } ivGuidePicture.setImageDrawable(pictures[currentItem]); ivGuidePicture.startAnimation(animations[0]); } } @Override public void onAnimationRepeat(Animation animation) { } } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_register: Toast.makeText(this, "点击了注册按钮", Toast.LENGTH_SHORT).show(); break; case R.id.btn_look_at_the_people_i_know: Toast.makeText(this, "点击了我认识的人按钮", Toast.LENGTH_SHORT).show(); break; case R.id.btn_login: Toast.makeText(this, "点击了登录按钮", Toast.LENGTH_SHORT).show(); break; default: break; } } }
下一篇将会对整个引导界面的开发专题做一个完结篇,敬请期待。