标签：android
一.ViewPager页面滑动切换实现：
借鉴了别人的源码，还是比较容易实现的，而且这种效果还是经常使用的，特此记录一下：
效果图：
主界面：
public class MainActivity extends Activity {
private ViewPager mPager;// 页卡内容
private List<View> listViews; // Tab页面列表
private ImageView cursor;// 动画图片
private TextView t1, t2, t3;// 页卡头标
private int offset = 0;// 动画图片偏移量
private int currIndex = 0;// 当前页卡编号
private int bmpW;// 动画图片宽度
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab_main);
InitImageView();
InitTextView();
InitViewPager();
}
// 初始选项
private void InitTextView() {
t1 = (TextView) findViewById(R.id.text1);
t2 = (TextView) findViewById(R.id.text2);
t3 = (TextView) findViewById(R.id.text3);
t1.setOnClickListener(new MyOnClickListener(0));
t2.setOnClickListener(new MyOnClickListener(1));
t3.setOnClickListener(new MyOnClickListener(2));
}
// 初始化ViewPager
private void InitViewPager() {
mPager = (ViewPager) findViewById(R.id.vPager);
listViews = new ArrayList<View>();
LayoutInflater mInflater = getLayoutInflater();
listViews.add(mInflater
.inflate(R.layout.activity_tab_one_pager, null));
listViews.add(mInflater
.inflate(R.layout.activity_tab_two_pager, null));
listViews.add(mInflater
.inflate(R.layout.activity_tab_three_pager, null));
mPager.setAdapter(new MyViewPagerAdapter(listViews, this));
//默认选中第一个页面
mPager.setCurrentItem(0);
mPager.setOnPageChangeListener(new MyOnPageChangeListener());
}
// 初始化动画
private void InitImageView() {
cursor = (ImageView) findViewById(R.id.cursor);
bmpW = BitmapFactory.decodeResource(getResources(),
R.drawable.icon_tab_page_bg).getWidth();// 获取图片宽度
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int screenW = dm.widthPixels;// 获取分辨率宽度
offset = (screenW / 3 - bmpW) / 2;// 计算偏移量
Matrix matrix = new Matrix();
matrix.postTranslate(offset, 0);
cursor.setImageMatrix(matrix);// 设置动画初始位置
}
// 页卡监听
public class MyOnClickListener implements View.OnClickListener {
private int index = 0;
public MyOnClickListener(int i) {
index = i;
}
public void onClick(View v) {
mPager.setCurrentItem(index);
}
};
// 滑动监听
public class MyOnPageChangeListener implements OnPageChangeListener {
int one = offset * 2 + bmpW;// 页卡1 -> 页卡2 偏移量
int two = one * 2;// 页卡1 -> 页卡3 偏移量
//arg0表示页数
public void onPageSelected(int arg0) {
// TranslateAnimation位移动画
Animation animation = null;
//表示从第一个页卡跳转到当前页卡
switch (arg0) {
case 0:
if (currIndex == 1) {
animation = new TranslateAnimation(one, 0, 0, 0);
} else if (currIndex == 2) {
animation = new TranslateAnimation(two, 0, 0, 0);
}
break;
case 1:
if (currIndex == 0) {
animation = new TranslateAnimation(offset, one, 0, 0);
} else if (currIndex == 2) {
animation = new TranslateAnimation(two, one, 0, 0);
}
break;
case 2:
if (currIndex == 0) {
animation = new TranslateAnimation(offset, two, 0, 0);
} else if (currIndex == 1) {
animation = new TranslateAnimation(one, two, 0, 0);
}
break;
}
currIndex = arg0;
animation.setFillAfter(true);// true:表示图片停在动画结束位置
animation.setDuration(300);
cursor.startAnimation(animation);
}
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
public void onPageScrollStateChanged(int arg0) {
}
}
}public class MyViewPagerAdapter extends PagerAdapter {
private List<View> mListViews;
private Context context;
public MyViewPagerAdapter(List<View> mListViews, Context context) {
this.mListViews = mListViews;
this.context = context;
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView(mListViews.get(arg1));
}
@Override
public void finishUpdate(View arg0) {
}
@Override
public int getCount() {
return mListViews.size();
}
@Override
public Object instantiateItem(View arg0, int arg1) {
if (arg1 < 3) {
((ViewPager) arg0).addView(mListViews.get(arg1 ), 0);
}
// 页卡内点击事件
if (arg1 == 0) {
Button btn = (Button) arg0.findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog("1");
}
});
}
if (arg1 == 1) {
Button btn = (Button) arg0.findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog("2");
}
});
}
if (arg1 == 2) {
Button btn = (Button) arg0.findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog("3");
}
});
}
return mListViews.get(arg1);
}
public void showDialog(String arg) {
new AlertDialog.Builder(context).setTitle("说明")
.setMessage("这是第"+arg+"个页面")
.setNegativeButton("确定", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
}).show();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == (arg1);
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void startUpdate(View arg0) {
}
}
<?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="#FF969696"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="45dp"
android:background="#FFDFD7D7" >
<TextView
android:id="@+id/text1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="\n页卡1"
android:textColor="#000000" />
<TextView
android:id="@+id/text2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="\n页卡2"
android:textColor="#000000" />
<TextView
android:id="@+id/text3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="\n页卡3"
android:textColor="#000000" />
</LinearLayout>
<ImageView
android:id="@+id/cursor"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scaleType="matrix"
android:src="@drawable/icon_tab_page_bg" />
<android.support.v4.view.ViewPager
android:id="@+id/vPager"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:layout_weight="1"
android:background="#FFDFD7D7"
android:flipInterval="30"
android:persistentDrawingCache="animation" />
</LinearLayout>
<?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="#FFDFD7D7"
android:orientation="vertical" >
<Button
android:id="@+id/btn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="点击我" />
</LinearLayout>标签：android
原文地址：http://blog.csdn.net/u010708662/article/details/45932885
