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效果圖:
demo源碼:
public class MainActivity extends Activity { // ViewPager是google SDk中自帶的一個附加包的一個類,可以用來實(shí)現(xiàn)屏幕間的切換。 // android-support-v4.jar private ViewPager mPager;// 頁卡內(nèi)容 private List<View> listViews; // Tab頁面列表 private ImageView cursor;// 動畫圖片 private TextView t1, t2, t3;// 頁卡頭標(biāo) private int offset = 0;// 動畫圖片偏移量 private int currIndex = 0;// 當(dāng)前頁卡編號 private int bmpW;// 動畫圖片寬度 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); InitImageView(); InitTextView(); InitViewPager(); } /** * 初始化頭標(biāo) */ 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.lay1, null)); listViews.add(mInflater.inflate(R.layout.lay2, null)); listViews.add(mInflater.inflate(R.layout.lay3, null)); mPager.setAdapter(new MyPagerAdapter(listViews)); mPager.setCurrentItem(0); mPager.setOnPageChangeListener(new MyOnPageChangeListener()); } /** * 初始化動畫 */ private void InitImageView() { cursor = (ImageView) findViewById(R.id.cursor); bmpW = BitmapFactory.decodeResource(getResources(), R.drawable.a).getWidth();// 獲取圖片寬度 DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); int screenW = dm.widthPixels;// 獲取分辨率寬度 offset = (screenW / 3 - bmpW) / 2;// 計(jì)算偏移量 Matrix matrix = new Matrix(); matrix.postTranslate(offset, 0); cursor.setImageMatrix(matrix);// 設(shè)置動畫初始位置 } /** * ViewPager適配器 */ public class MyPagerAdapter extends PagerAdapter { public List<View> mListViews; public MyPagerAdapter(List<View> mListViews) { this.mListViews = mListViews; } @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) { ((ViewPager) arg0).addView(mListViews.get(arg1), 0); return mListViews.get(arg1); } @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) { } } /** * 頭標(biāo)點(diǎn)擊監(jiān)聽 */ public class MyOnClickListener implements View.OnClickListener { private int index = 0; public MyOnClickListener(int i) { index = i; } @Override public void onClick(View v) { mPager.setCurrentItem(index); } }; /** * 頁卡切換監(jiān)聽 */ public class MyOnPageChangeListener implements OnPageChangeListener { int one = offset * 2 + bmpW;// 頁卡1 -> 頁卡2 偏移量 int two = one * 2;// 頁卡1 -> 頁卡3 偏移量 @Override public void onPageSelected(int arg0) { Animation animation = null; 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:圖片停在動畫結(jié)束位置 animation.setDuration(300); cursor.startAnimation(animation); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } } }
其他方法:
1.ViewPager使用
http://zhangfy068.iteye.com/blog/1819979
2.頁卡實(shí)現(xiàn)詳解:Android ViewPager使用詳解
http://blog.csdn.net/wangjinyu501/article/details/8169924
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