本文主要是介绍仿微信首次启动滑动界面效果,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
用过微信的都知道,第一次启动时会出现一系列操作说明或功能说明的画面,滑到底然后就进入正式界面,今天我也参考网络资源模仿着做了一个。
首先看下工程结构图:
首先看布局文件main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/mainRLayout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="#000000" ><!-- 自定义滑动控件 --><com.ericssonlabs.ScrollLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/ScrollLayout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:visibility="visible" ><!-- 每一页的布局均以一个RelativeLayout来控制,后面类似,这里一共四个 --><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/w01" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:layout_marginBottom="90dp"android:text="微信,不只是个聊天工具"android:textColor="#FFFFFF"android:textSize="18sp" /></RelativeLayout><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/w02" ><TextViewandroid:id="@+id/t1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:layout_centerHorizontal="true"android:layout_marginTop="96dp"android:gravity="center_horizontal"android:text="第一次,你可以使用透明背景的动画表情,来表达你此刻的心情"android:textColor="#FFFFFF"android:textSize="18sp" /></RelativeLayout><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/w03" /><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/w01" ><!-- 点击该按钮后就进入OtherActivit了 --><Buttonandroid:id="@+id/startBtn"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:layout_gravity="center_vertical"android:layout_marginBottom="90dp"android:layout_marginLeft="8dp"android:layout_marginRight="8dp"android:background="@drawable/button_bg"android:text="开始我的微信生活"android:textColor="#FFFFFF"android:textSize="18sp" /></RelativeLayout></com.ericssonlabs.ScrollLayout><!-- 这个布局是下面显示的小圆点的布局,其中ImageView的数量要与上面RelativeLayout的数量对应 --><LinearLayoutandroid:id="@+id/llayout"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:layout_marginBottom="25dp"android:orientation="horizontal"android:visibility="visible" ><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:clickable="true"android:padding="5dp"android:src="@drawable/page_indicator_bg" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:clickable="true"android:padding="5dp"android:src="@drawable/page_indicator_bg" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:clickable="true"android:padding="5dp"android:src="@drawable/page_indicator_bg" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:clickable="true"android:padding="5dp"android:src="@drawable/page_indicator_bg" /></LinearLayout><!-- 这个布局是最后点击按钮后启动新界面的一个动画效果 --><LinearLayoutandroid:id="@+id/animLayout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:visibility="gone" ><LinearLayoutandroid:id="@+id/leftLayout"android:layout_width="wrap_content"android:layout_height="fill_parent" ><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/whatsnew_left" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/whatsnew_left_m" /></LinearLayout><LinearLayoutandroid:id="@+id/rightLayout"android:layout_width="fill_parent"android:layout_height="fill_parent" ><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/whatsnew_right_m" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/whatsnew_right" /></LinearLayout></LinearLayout></RelativeLayout>
接下来是自定义控件ScrollLayout.java,这个是继承了ViewGroup的一个自定义控件,主要实现了左右滑动以及展示内容的功能,源码如下:
public class ScrollLayoutActivity extends Activity implements OnViewChangeListener{private ScrollLayout mScrollLayout;private ImageView[] imgs;private int count;private int currentItem;private Button startBtn;private RelativeLayout mainRLayout;private LinearLayout pointLLayout;private LinearLayout leftLayout;private LinearLayout rightLayout;private LinearLayout animLayout;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);initView();}private void initView() {mScrollLayout = (ScrollLayout) findViewById(R.id.ScrollLayout);pointLLayout = (LinearLayout) findViewById(R.id.llayout);mainRLayout = (RelativeLayout) findViewById(R.id.mainRLayout);startBtn = (Button) findViewById(R.id.startBtn);startBtn.setOnClickListener(onClick);animLayout = (LinearLayout) findViewById(R.id.animLayout);leftLayout = (LinearLayout) findViewById(R.id.leftLayout);rightLayout = (LinearLayout) findViewById(R.id.rightLayout);count = mScrollLayout.getChildCount();imgs = new ImageView[count];for (int i = 0; i < count; i++) {imgs[i] = (ImageView) pointLLayout.getChildAt(i);imgs[i].setEnabled(true);imgs[i].setTag(i);}currentItem = 0;imgs[currentItem].setEnabled(false);mScrollLayout.SetOnViewChangeListener(this);}private View.OnClickListener onClick = new View.OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.startBtn:mScrollLayout.setVisibility(View.GONE);pointLLayout.setVisibility(View.GONE);animLayout.setVisibility(View.VISIBLE);mainRLayout.setBackgroundResource(R.drawable.whatsnew_bg);Animation leftOutAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.translate_left);Animation rightOutAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.translate_right);leftLayout.setAnimation(leftOutAnimation);rightLayout.setAnimation(rightOutAnimation);leftOutAnimation.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {mainRLayout.setBackgroundColor(Color.BLACK);}@Overridepublic void onAnimationRepeat(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {leftLayout.setVisibility(View.GONE);rightLayout.setVisibility(View.GONE);Intent intent = new Intent(ScrollLayoutActivity.this,OtherActivity.class);ScrollLayoutActivity.this.startActivity(intent);ScrollLayoutActivity.this.finish();//结束老Activity启动新Activity之前的一个过度动画overridePendingTransition(R.anim.zoom_out_enter,R.anim.zoom_out_exit);}});break;}}};@Overridepublic void OnViewChange(int position) {setcurrentPoint(position);}private void setcurrentPoint(int position) {if (position < 0 || position > count - 1 || currentItem == position) {return;}imgs[currentItem].setEnabled(true);imgs[position].setEnabled(false);currentItem = position;}
}
然后是定义的一个回调接口,这个接口的主要作用在代码中有注释,源码如下:
package com.ericssonlabs;public interface OnViewChangeListener {//控制底部小圆点的回调方法public void OnViewChange(int view);
}
最后是如何使用该自定义控件,在Activity中调用并使用,代码如下:
public class ScrollLayoutActivity extends Activity implements OnViewChangeListener{private ScrollLayout mScrollLayout;private ImageView[] imgs;private int count;private int currentItem;private Button startBtn;private RelativeLayout mainRLayout;private LinearLayout pointLLayout;private LinearLayout leftLayout;private LinearLayout rightLayout;private LinearLayout animLayout;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);initView();}private void initView() {mScrollLayout = (ScrollLayout) findViewById(R.id.ScrollLayout);pointLLayout = (LinearLayout) findViewById(R.id.llayout);mainRLayout = (RelativeLayout) findViewById(R.id.mainRLayout);startBtn = (Button) findViewById(R.id.startBtn);startBtn.setOnClickListener(onClick);animLayout = (LinearLayout) findViewById(R.id.animLayout);leftLayout = (LinearLayout) findViewById(R.id.leftLayout);rightLayout = (LinearLayout) findViewById(R.id.rightLayout);count = mScrollLayout.getChildCount();imgs = new ImageView[count];for (int i = 0; i < count; i++) {imgs[i] = (ImageView) pointLLayout.getChildAt(i);imgs[i].setEnabled(true);imgs[i].setTag(i);}currentItem = 0;imgs[currentItem].setEnabled(false);mScrollLayout.SetOnViewChangeListener(this);}private View.OnClickListener onClick = new View.OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.startBtn:mScrollLayout.setVisibility(View.GONE);pointLLayout.setVisibility(View.GONE);animLayout.setVisibility(View.VISIBLE);mainRLayout.setBackgroundResource(R.drawable.whatsnew_bg);Animation leftOutAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.translate_left);Animation rightOutAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.translate_right);leftLayout.setAnimation(leftOutAnimation);rightLayout.setAnimation(rightOutAnimation);leftOutAnimation.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {mainRLayout.setBackgroundColor(Color.BLACK);}@Overridepublic void onAnimationRepeat(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {leftLayout.setVisibility(View.GONE);rightLayout.setVisibility(View.GONE);Intent intent = new Intent(ScrollLayoutActivity.this,OtherActivity.class);ScrollLayoutActivity.this.startActivity(intent);ScrollLayoutActivity.this.finish();//结束老Activity启动新Activity之前的一个过度动画overridePendingTransition(R.anim.zoom_out_enter,R.anim.zoom_out_exit);}});break;}}};@Overridepublic void OnViewChange(int position) {setcurrentPoint(position);}private void setcurrentPoint(int position) {if (position < 0 || position > count - 1 || currentItem == position) {return;}imgs[currentItem].setEnabled(true);imgs[position].setEnabled(false);currentItem = position;}
}
关于动画这一块我还不是很熟,这里是直接copy的网上的效果,后续会专门做一个专题来研究动画,毕竟,有动画的世界才是多彩的,嘿嘿
一切就绪后,运行看看效果:
工程下载:代码下载
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