案例二：静态加载
1）、首先在res/layout文件夹里面不回4个用来在activity_main.xml布局文件中被静态加载的page1.xml、page2.xml、page3.xml、page4.xml，其代码分别如下：
|
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical">
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="32sp" android:text="这是第一页" />
</LinearLayout> |
|
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="32sp" android:text="这是第二页"/>
</LinearLayout> |
|
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="32sp" android:text="这是第三页"/>
</LinearLayout> |
|
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="32sp" android:text="这是第四页" />
</LinearLayout> |
2）在activity_main.xml文件中静态加载以上四个布局文件
|
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" >
<ViewFlipper android:id="@+id/body_flipper" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#f0f0f0" >
<include android:id="@+id/layout01" layout="@layout/page1" /> <include android:id="@+id/layout02" layout="@layout/page2" /> <include android:id="@+id/layout02" layout="@layout/page3" /> <include android:id="@+id/layout02" layout="@layout/page4" />
</ViewFlipper>
</RelativeLayout> |
3)在res目录下新建一个用来生成动画文件的anim文件夹，并在其中创建四个如下动画文件，push_left_in.xml
|
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" > <!-- 表示图片从左边进入，从不可见到可见 --> <translate android:duration="500" android:fromXDelta="-100.0%p" android:toXDelta="0" /> <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" /> </set> |
push_left_out.xml
|
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" > <!-- 表示图片从左边退出，从可见到不可见 --> <translate android:duration="500" android:fromXDelta="0" android:toXDelta="-100.0%p" /> <alpha android:duration="500" android:fromAlpha="1.0" android:toAlpha="0.1" /> </set> |
push_right_in.xml
|
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <!-- 表示图片从右边进入，从不可见到可见 --> <translate android:duration="500" android:fromXDelta="100.0%p" android:toXDelta="0" /> <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" /> </set> |
push_right_out.xml
|
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <!-- 表示图片从右边退出，从可见到不可见 --> <translate android:duration="500" android:fromXDelta="0" android:toXDelta="100.0%p" /> <alpha android:duration="500" android:fromAlpha="1.0" android:toAlpha="0.1" /> </set> |
4）在一个继承了Activity类的MainActivity.java类中，实现如下代码
|
package zjh.android.lx;
import android.os.Bundle; import android.app.Activity; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.view.animation.AnimationUtils; import android.widget.ViewFlipper;
/** * ViewFlipper 静态加载 */ public class MainActivity extends Activity implements OnTouchListener {
private ViewFlipper viewFlipper; private float touchDownX; // 手指按下的X坐标 private float touchUpX; // 手指松开的X坐标
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);
viewFlipper = (ViewFlipper) findViewById(R.id.body_flipper); viewFlipper.setOnTouchListener(this); }
@Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { // 取得左右滑动时手指按下的X坐标 touchDownX = event.getX(); return true; } else if (event.getAction() == MotionEvent.ACTION_UP) { // 取得左右滑动时手指松开的X坐标 touchUpX = event.getX(); // 从左往右，看前一个View if (touchUpX - touchDownX > 100) { // 显示上一屏动画 viewFlipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in)); viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out)); // 显示上一屏的View viewFlipper.showPrevious();
/* * 方法二 */ // overridePendingTransition(R.anim.push_left_in,R.anim.push_right_out); } else if (touchDownX - touchUpX > 100) { // 显示下一屏的动画 viewFlipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in)); viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out)); // 显示下一屏的View viewFlipper.showNext(); /* * 方法二 */ // overridePendingTransition(R.anim.push_right_in,R.anim.push_left_out); } return true; } return false; } } |
此时静态加载的功能就实现了，当向右滑动的时候运行结果如下：
|
|
