最近在研究如何做出仿微信,仿新浪等应用,第一次安装使用的使用展示应用程序的新特性和用法。
实现功能:左右手势滑屏
底部小圆点随当前显示页跳动
浮动按钮显示。当触屏事件发生显示,否则就渐渐消失
先转个文章:http://blog.csdn.net/feng88724/article/details/6973662
第一种: ViewFlipper + GestureDetector
第二种: ActivityGroup + GestureDetector
第三种: ViewPager (Android3.0+)
第四种: ViewFlow (开源项目)
话不多说,先放上效果图
向右滑动,或者点击按钮向右
怎么样,是不是很心动~~~!哈哈、
实现左右滑屏是需要一个叫做ViewPager的东西。具体ViewPager怎么用我就不赘述了。(PS注意导入ViewPager的兼容包)
接下来是代码:
首先在main.xml中声明ViewPager:
- <LinearLayout
- android:id="@+id/linearLayout01"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:orientation="vertical" >
- <android.support.v4.view.ViewPager
- android:id="@+id/guidePages"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"/>
- lt;/LinearLayout>
- 和一个viewGroup放小圆点
- <LinearLayout
- android:id="@+id/viewGroup"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:layout_alignParentBottom="true"
- android:layout_marginBottom="40dp"
- android:gravity="center_horizontal"
- android:orientation="horizontal" >
- </LinearLayout>
接着在item01.xml等几个xml中放置要显示的图片,因为几个都一样,就不都贴上来了。
- <ImageView
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:background="@drawable/feature_guide_0" >
- </ImageView>
接下来是核心代码:
- public class GuideViewActivity extends Activity {
- private ViewPager viewPager;
- private ArrayList<View> pageViews;
- private ImageView imageView;
- private ImageView[] imageViews;
- // 包裹滑动图片LinearLayout
- private ViewGroup main;
- // 包裹小圆点的LinearLayout
- private ViewGroup group;
- //左箭头按钮
- private ImageView imageViewLeft;
- //右箭头按钮
- private ImageView imageViewRight;
- //当前页码
- private int currentIndex;
- //ImageView的alpha值
- private int mAlpha = 0;
- private boolean isHide;
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- //将要显示的图片放到ArrayList当中,存到适配器中
- LayoutInflater inflater = getLayoutInflater();
- pageViews = new ArrayList<View>();
- pageViews.add(inflater.inflate(R.layout.item01, null));
- ...
- imageViews = new ImageView[pageViews.size()];
- main = (ViewGroup)inflater.inflate(R.layout.main, null);
- group = (ViewGroup)main.findViewById(R.id.viewGroup);
- viewPager = (ViewPager)main.findViewById(R.id.guidePages);
- imageViewLeft = (ImageView)main.findViewById(R.id.imageView1);
- imageViewRight = (ImageView)main.findViewById(R.id.imageView2);
- imageViewLeft.setAlpha(0);
- imageViewRight.setAlpha(0);
- //将小圆点放到imageView数组当中
- for (int i = 0; i < pageViews.size(); i++) {
- imageView =