您好，我正在创建 ViewFlipper，如下所示。
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@android:color/white"
android:orientation="vertical" >
<ViewFlipper
android:id="@+id/vfShow"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</ViewFlipper>
</LinearLayout>
并处理诸如
ViewFlipperSampleActivity.java
public class ViewFlipperSampleActivity extends Activity {
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
private ViewFlipper vf;
private Context mContext;
private final GestureDetector detector = new GestureDetector(
new MyGestureDetector());
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fliper);
mContext = this;
vf = (ViewFlipper) this.findViewById(R.id.vfShow);
vf.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(final View view, final MotionEvent event) {
detector.onTouchEvent(event);
return true;
}
});
vf.addView(addImageView(R.drawable.a));
vf.addView(addImageView(R.drawable.b));
vf.addView(addImageView(R.drawable.c));
vf.addView(addImageView(R.drawable.d));
}
View addImageView(int resId) {
ImageView iv = new ImageView(this);
iv.setImageResource(resId);
return iv;
}
class MyGestureDetector extends SimpleOnGestureListener {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
// right to left swipe
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
vf.setInAnimation(AnimationUtils.loadAnimation(mContext,
R.anim.left_in));
vf.setOutAnimation(AnimationUtils.loadAnimation(mContext,
R.anim.left_out));
vf.showNext();
return true;
} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
vf.setInAnimation(AnimationUtils.loadAnimation(mContext,
R.anim.right_in));
vf.setOutAnimation(AnimationUtils.loadAnimation(mContext,
R.anim.right_out));
vf.showPrevious();
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
}
}
现在我很困惑如何用 viewflipper 在特定图像上播放声音？请帮助我解决这个问题。
谢谢
更新 ：-
public class SoundClass {
static MediaPlayer theme1 = null, theme2 = null, theme3 = null,
theme4 = null, theme5 = null, theme6 = null;
static MediaPlayer[] mPlayers = { theme1, theme2, theme3, theme4, theme5,
theme6 };
static Integer[] resources = { R.raw.one, R.raw.two, R.raw.three,
R.raw.four, R.raw.five, R.raw.six, R.raw.seven, R.raw.eight,
R.raw.nine, R.raw.ten, R.raw.eleven, R.raw.twelve, R.raw.thirteen,
R.raw.fourteen, R.raw.fifteen, R.raw.sixteen, R.raw.seventeen,
R.raw.eighteen, R.raw.ninteen, R.raw.twenty };
static Context ctxt = null;
public SoundClass(Context context) {
ctxt = context;
}
public static void createAndPlay(int id, Context context) {
System.out.println(" --- in CreateAndPlay --->>> " + id);
if (id >= 0 && id <= 20)
stopAndRelease(id - 1);
mPlayers[id] = MediaPlayer.create(context, resources[id]);
if (mPlayers[id] != null && !mPlayers[id].isPlaying()) {
mPlayers[id].start();
mPlayers[id].setLooping(false);
}
}
public static void stopAndRelease(int id) {
if (id >= 0) {
// System.out.println(" --- in StopAndRelease if condition --->>> "+id);
if (mPlayers[id] != null && mPlayers[id].isPlaying()) {
// System.out.println("in StopAndRelease 2nd if condition --->>> "+" mPlayers[id] -->> "+mPlayers[id]+" mPlayers[id].isPlaying() -> "+mPlayers[id].isPlaying());
mPlayers[id].stop();
mPlayers[id].reset();
mPlayers[id].release();
mPlayers[id] = null;
}
}
}
public static void mute(int id) {
if (mPlayers[id] != null && mPlayers[id].isPlaying()) {
mPlayers[id].pause();
}
}
public static void unMute(int id) {
if (mPlayers[id] != null && !mPlayers[id].isPlaying()) {
mPlayers[id].start();
}
}
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
// right to left swipe
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
vf_letters.setInAnimation(AnimationUtils.loadAnimation(
mContext, R.anim.left_in));
vf_letters.setOutAnimation(AnimationUtils.loadAnimation(
mContext, R.anim.left_out));
if (count < 20) {
count += 1;
// if (isMute)
SoundClass.createAndPlay(count, LettersScreen.this);
vf_letters.showNext();
} else {
SoundClass.stopAndRelease(count);
count = 0;
// if(isMute)
SoundClass.createAndPlay(count, LettersScreen.this);
}
return true;
} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
vf_letters.setInAnimation(AnimationUtils.loadAnimation(
mContext, R.anim.right_in));
vf_letters.setOutAnimation(AnimationUtils.loadAnimation(
mContext, R.anim.right_out));
if (count > 0) {
SoundClass.stopAndRelease(count);
count -= 1;
// if (isMute)
SoundClass.createAndPlay(count, LettersScreen.this);
vf_letters.showPrevious();
} else {
SoundClass.stopAndRelease(count);
count = 20;
// if(isMute)
SoundClass.createAndPlay(count, LettersScreen.this);
vf_letters.showPrevious();
}
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}