Android 開發：ViewFlipper 左右滑動效果

 http://www.open-open.com/lib/view/open1325602955359.html

 

怎麼實現Android主頁面的左右拖動效果。其實實現起來很簡單，就是使用ViewFlipper來將您要來回拖動的View裝在一起，然後與GestureDetector手勢識別類來聯動，確定要顯示哪個View，加上一點點動畫效果即可。

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01	public class TestFlip extends Activity implements OnGestureListener {

02

03	private ViewFlipper flipper;

04

05	private GestureDetector detector;

06

07	/** Called when the activity is first created. */

08

@Override

09	public void onCreate(Bundle savedInstanceState) {

10	super.onCreate(savedInstanceState);

11	setContentView(R.layout.main);

12

13	detector = new GestureDetector(this);

14	flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01);

15	flipper.addView(addView(R.layout.layout1));

16	flipper.addView(addView(R.layout.layout2));

17	flipper.addView(addView(R.layout.layout3));

18	flipper.addView(addView(R.layout.layout4));

19

}

20

21	private View addView(int layout) {

22	LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

23	View view = inflater.inflate(layout, null);

24	return view;

25

}

26

27

@Override

28	public boolean onTouchEvent(MotionEvent event) {

29	return this.detector.onTouchEvent(event);

30

}

31

32

@Override

33	public boolean onDown(MotionEvent e) {

34	// TODO Auto-generated method stub

35	return false;

36

}

37

38

@Override

39	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,

40	float velocityY) {

41	if (e1.getX() - e2.getX() > 120) {

42	this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));

43	this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));

44	this.flipper.showNext();

45	return true;

46	} else if (e1.getX() - e2.getX() < -120) {

47	this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));

48	this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));

49	this.flipper.showPrevious();

50	return true;

51

}

52	return false;

53

}

54

55

@Override

56	public void onLongPress(MotionEvent e) {

57	// TODO Auto-generated method stub

58

59

}

60

61

@Override

62	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,

63	float distanceY) {

64	// TODO Auto-generated method stub

65	return false;

66

}

67

68

@Override

69	public void onShowPress(MotionEvent e) {

70	// TODO Auto-generated method stub

71

72

}

73

74

@Override

75	public boolean onSingleTapUp(MotionEvent e) {

76	// TODO Auto-generated method stub

77	return false;

78

}

79

}

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01	<?xml version="1.0" encoding="utf-8"?>

02	<LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"

03	Android:orientation="vertical"

04	Android:layout_width="fill_parent"

05	Android:layout_height="fill_parent"

06

>

07	<ViewFlipper Android:id="@+id/ViewFlipper01"

08	Android:layout_width="fill_parent" android:layout_height="fill_parent">

09	</ViewFlipper>

10	</LinearLayout>