仿微信首次启动滑动界面效果

于 2012-07-16 17:55:00 发布
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文章标签： 移动开发 java

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.ScrollLayout
        xmlns: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 -->
        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="@drawable/w01" >

            <TextView
                android: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>

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="@drawable/w02" >

            <TextView
                android: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>

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="@drawable/w03" />

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="@drawable/w01" >
		<!-- 点击该按钮后就进入OtherActivit了 -->
            <Button
                android: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 -->
    <LinearLayout
        android: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" >

        <ImageView
            android: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" />

        <ImageView
            android: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" />

        <ImageView
            android: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" />

        <ImageView
            android: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 -->
    <LinearLayout
        android:id="@+id/animLayout"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:visibility="gone" >

        <LinearLayout
            android:id="@+id/leftLayout"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent" >

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/whatsnew_left" />

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/whatsnew_left_m" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/rightLayout"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" >

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/whatsnew_right_m" />

            <ImageView
                android: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;

	@Override
	public 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() {
		@Override
		public 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() {
					@Override
					public void onAnimationStart(Animation animation) {
						mainRLayout.setBackgroundColor(Color.BLACK);
					}

					@Override
					public void onAnimationRepeat(Animation animation) {
					}

					@Override
					public 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;
			}
		}
	};

	@Override
	public 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;

	@Override
	public 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() {
		@Override
		public 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() {
					@Override
					public void onAnimationStart(Animation animation) {
						mainRLayout.setBackgroundColor(Color.BLACK);
					}

					@Override
					public void onAnimationRepeat(Animation animation) {
					}

					@Override
					public 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;
			}
		}
	};

	@Override
	public 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;
	}
}
然后是启动新界面的动画效果：

translate_left.xml

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="false" >
    <translate
        android:duration="2000"
        android:fromXDelta="0.0"
        android:fromYDelta="0.0"
        android:toXDelta="-50.0%p"
        android:toYDelta="0.0" />
</set>

translate_right.xml 

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="false" >
    <translate
        android:duration="2000"
        android:fromXDelta="0.0"
        android:fromYDelta="0.0"
        android:toXDelta="50.0%p"
        android:toYDelta="0.0" />
</set>

zone_out_enter.xml 

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/overshoot_interpolator" >
    <scale
        android:duration="@android:integer/config_shortAnimTime"
        android:fromXScale="0.7"
        android:fromYScale="0.7"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.0"
        android:toYScale="1.0" />
</set>

zone_out_exit.xml 

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator" >

    <scale
        android:duration="@android:integer/config_shortAnimTime"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="0.8"
        android:toYScale="0.8" />

    <alpha
        android:duration="@android:integer/config_shortAnimTime"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</set>

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：

以上就是运行效果了，图片和其他的文件我没有在这里列举，这个效果在大多数项目中都 用的到，学习一下还是比较好的。需要源码的同学可以跟我联系，我的新浪微博：唐韧_Ryan

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