Close one activity by scrolling from right to left with smooth animation to advance to the second activity
I would like to have an activity that enters the application and be closed, you need to scroll from right to left (maybe with smooth animation if it doesn't work too much), then there is another part of the application I already have, that is ActionBar tabs + Swipe Views
. I read a few Android tutorials like how to implement Swipe Views , but they weren't my business. Could you help me please? [With "smooth animation" I mean the swipe should follow the finger]
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I usually achieve this using a gesture listener:
First, define the translation animation inside res/anim
:
slide_in_left.xml:
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="-50%p" android:toXDelta="0"
android:duration="@android:integer/config_longAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
slide_in_right.xml:
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="50%p" android:toXDelta="0"
android:duration="@android:integer/config_longAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
slide_out_left.xml:
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="-50%p"
android:duration="@android:integer/config_longAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
slide_out_right.xml:
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="50%p"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
Then in your current activity class:
class MyGestureDetector extends SimpleOnGestureListener {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
float slope = (e1.getY() - e2.getY()) / (e1.getX() - e2.getX());
float angle = (float) Math.atan(slope);
float angleInDegree = (float) Math.toDegrees(angle);
// left to right
if (e1.getX() - e2.getX() > 20 && Math.abs(velocityX) > 20) {
if ((angleInDegree < 45 && angleInDegree > -45)) {
startActivity(new Intent(CurrentActivitiy.this, NextActivity.class);
CurrentActivity.this.overridePendingTransition(
R.anim.slide_in_left, R.anim.slide_out_right);
finish();
}
// right to left fling
} else if (e2.getX() - e1.getX() > 20
&& Math.abs(velocityX) > 20) {
if ((angleInDegree < 45 && angleInDegree > -45)) {
startActivity(new Intent(CurrentActivitiy.this, NextActivity.class);
CurrentActivity.this.overridePendingTransition(
R.anim.slide_in_right, R.anim.slide_out_left);
finish();
}
}
return true;
} catch (Exception e) {
// nothing
}
return false;
}
}
Then you can register any view to receive / listen to gestures:
final GestureDetector gestureDetector = new GestureDetector(new MyGestureDetector());
//the parent layout
findViewById(R.id.parent_layout).setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) return false;
return false;
}
});
//an image view
findViewById(R.id.image_view).setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) return false;
return false;
}
});
// a text view
findViewById(R.id.text_view).setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) return false;
return false;
}
});
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