我有这段代码可以在两个之间滑动ImageViews
public class CaseHolder extends MainClass{
// for the next movement
public static Animation inFromLeftAnimation() {
Animation inFromLeft = new TranslateAnimation(
Animation.RELATIVE_TO_PARENT, -1.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
inFromLeft.setDuration(350);
inFromLeft.setInterpolator(new AccelerateInterpolator());
return inFromLeft;
}
// for the previous movement
public static Animation inFromRightAnimation() {
Animation inFromRight = new TranslateAnimation(
Animation.RELATIVE_TO_PARENT, +1.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
inFromRight.setDuration(350);
inFromRight.setInterpolator(new AccelerateInterpolator());
return inFromRight;
}
public static Animation outToLeftAnimation() {
Animation outtoLeft = new TranslateAnimation(
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, -1.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
outtoLeft.setDuration(350);
outtoLeft.setInterpolator(new AccelerateInterpolator());
return outtoLeft;
}
public static Animation outToRightAnimation() {
Animation outtoRight = new TranslateAnimation(
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, +1.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
outtoRight.setDuration(350);
outtoRight.setInterpolator(new AccelerateInterpolator());
return outtoRight;
}
TextView pcn;
TextView header;
TextView date;
ImageView right;
TextView status;
ImageView left;
String dateFromIntent;
String pcnFromIntent;
String statusFromIntent;
ViewFlipper vf;
float oldTouchValue;
boolean isDown;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setTabBar(R.layout.caseholder);
overridePendingTransition(R.anim.activityfade, R.anim.activityfadeout);
vf = (ViewFlipper) findViewById(R.id.viewFlipper01);
pcn = (TextView) findViewById(R.id.pcn);
header = (TextView) findViewById(R.id.textView1);
date = (TextView) findViewById(R.id.date);
status = (TextView) findViewById(R.id.status);
right = (ImageView) findViewById(R.id.rightF);
left = (ImageView) findViewById(R.id.leftF);
header.setText("Overview");
pcnFromIntent = getIntent().getExtras().getString("pcn");
dateFromIntent = getIntent().getExtras().getString("date");
statusFromIntent = getIntent().getExtras().getString("status");
date.setText("Date: " + dateFromIntent);
pcn.setText(pcnFromIntent);
status.setText("Status: " + statusFromIntent);
if (getIntent().hasExtra("right")) {
Bitmap b = BitmapFactory.decodeByteArray(getIntent()
.getByteArrayExtra("right"), 0, getIntent()
.getByteArrayExtra("right").length);
right.setImageBitmap(b);
}
if (getIntent().hasExtra("left")) {
Bitmap b1 = BitmapFactory.decodeByteArray(getIntent()
.getByteArrayExtra("left"), 0, getIntent()
.getByteArrayExtra("left").length);
left.setImageBitmap(b1);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Intent j = new Intent(getApplicationContext(), MainClass.class);
startActivity(j);
CaseHolder.this.finish();
overridePendingTransition(R.anim.activityfade, R.anim.activityfadeout);
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onTouchEvent(MotionEvent touchevent) {
switch (touchevent.getAction()) {
case MotionEvent.ACTION_DOWN: {
oldTouchValue = touchevent.getX();
break;
}
case MotionEvent.ACTION_UP: {
float currentX = touchevent.getX();
if (oldTouchValue < currentX) {
vf.setInAnimation(inFromLeftAnimation());
vf.setOutAnimation(outToRightAnimation());
vf.showNext();
}
if (oldTouchValue > currentX) {
vf.setInAnimation(inFromRightAnimation());
vf.setOutAnimation(outToLeftAnimation());
vf.showPrevious();
}
break;
}
}
return false;
}
}
这工作得很好,但我想要更平滑的滚动。现在,用户必须将手指从屏幕上抬起,才能在Views
. 如何修改此代码,以便用户可以在屏幕上滑动手指,并且ViewFlipper
将“跟随”手指移动?