package com.hzn.lib;
import android.animation.Animator;
import android.animation.TimeInterpolator;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.view.ViewTreeObserver;
import java.util.ArrayList;
/**
* Tool for transition between two activities
* <br/>
* Created by huzn on 2017/5/8.
*/
public class EasyTransition {
public static final String EASY_TRANSITION_OPTIONS = "easy_transition_options";
public static final long DEFAULT_TRANSITION_ANIM_DURATION = 1000;
/**
* Start Activity with transition options
*
* @param intent The intent to start
* @param options Transition options, using {@link EasyTransitionOptions#makeTransitionOptions(Activity, View...)}
* to build your options
*/
public static void startActivity(Intent intent, EasyTransitionOptions options) {
options.update();
intent.putParcelableArrayListExtra(EASY_TRANSITION_OPTIONS, options.getAttrs());
Activity activity = options.getActivity();
activity.startActivity(intent);
activity.overridePendingTransition(0, 0);
}
/**
* Start Activity for result, with transition options
*
* @param intent The intent to start
* @param requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits,
* see {@link Activity#startActivityForResult(Intent, int)}
* @param options Transition options, using {@link EasyTransitionOptions#makeTransitionOptions(Activity, View...)}
* to build your options
*/
public static void startActivityForResult(Intent intent, int requestCode, EasyTransitionOptions options) {
options.update();
intent.putParcelableArrayListExtra(EASY_TRANSITION_OPTIONS, options.getAttrs());
Activity activity = options.getActivity();
activity.startActivityForResult(intent, requestCode);
activity.overridePendingTransition(0, 0);
}
/**
* Enter the Activity, invoking this method to start enter transition animations
*
* @param activity The Activity entering
* @param duration The duration of enter transition animation
* @param interpolator The TimeInterpolator of enter transition animation
* @param listener Animator listener, normally you can do your initial after animation end
*/
public static void enter(Activity activity, long duration, TimeInterpolator interpolator, Animator.AnimatorListener listener) {
Intent intent = activity.getIntent();
ArrayList<EasyTransitionOptions.ViewAttrs> attrs =
intent.getParcelableArrayListExtra(EASY_TRANSITION_OPTIONS);
runEnterAnimation(activity, attrs, duration, interpolator, listener);
}
/**
* The same as {@link EasyTransition#enter(Activity, long, TimeInterpolator, Animator.AnimatorListener)}
* with no interpolator
*/
public static void enter(Activity activity, long duration, Animator.AnimatorListener listener) {
enter(activity, duration, null, listener);
}
/**
* The same as {@link EasyTransition#enter(Activity, long, TimeInterpolator, Animator.AnimatorListener)}
* with default duration
*/
public static void enter(Activity activity, TimeInterpolator interpolator, Animator.AnimatorListener listener) {
enter(activity, DEFAULT_TRANSITION_ANIM_DURATION, interpolator, listener);
}
/**
* The same as {@link EasyTransition#enter(Activity, long, TimeInterpolator, Animator.AnimatorListener)}
* with default duration and no interpolator
*/
public static void enter(Activity activity, Animator.AnimatorListener listener) {
enter(activity, DEFAULT_TRANSITION_ANIM_DURATION, null, listener);
}
/**
* The same as {@link EasyTransition#enter(Activity, long, TimeInterpolator, Animator.AnimatorListener)}
* with default duration, no interpolator and no listener
*/
public static void enter(Activity activity) {
enter(activity, DEFAULT_TRANSITION_ANIM_DURATION, null, null);
}
private static void runEnterAnimation(Activity activity,
ArrayList<EasyTransitionOptions.ViewAttrs> attrs,
final long duration,
final TimeInterpolator interpolator,
final Animator.AnimatorListener listener) {
if (null == attrs || attrs.size() == 0)
return;
for (final EasyTransitionOptions.ViewAttrs attr : attrs) {
final View view = activity.findViewById(attr.id);
if (null == view)
continue;
view.getViewTreeObserver()
.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
view.getViewTreeObserver().removeOnPreDrawListener(this);
int[] location = new int[2];
view.getLocationOnScreen(location);
view.setPivotX(0);
view.setPivotY(0);
view.setScaleX(attr.width / view.getWidth());
view.setScaleY(attr.height / view.getHeight());
view.setTranslationX(attr.startX - location[0]); // xDelta
view.setTranslationY(attr.startY - location[1]); // yDelta
view.animate()
.scaleX(1)
.scaleY(1)
.translationX(0)
.translationY(0)
.setDuration(duration)
.setInterpolator(interpolator)
.setListener(listener);
return true;
}
});
}
}
/**
* Exit the Activity, invoke this method to start exit transition animation,
* the shared views must have same ids, or it will throws NullPointerException
*
* @param activity The Activity Exiting
* @param interpolator The TimeInterpolator of exit transition animation
* @param duration The duration of exit transition animation
* @throws NullPointerException throws if shared views not found in The Activity Exiting
*/
public static void exit(Activity activity, long duration, TimeInterpolator interpolator) {
Intent intent = activity.getIntent();
ArrayList<EasyTransitionOptions.ViewAttrs> attrs = intent.getParcelableArrayListExtra(EASY_TRANSITION_OPTIONS);
runExitAnimation(activity, attrs, duration, interpolator);
}
/**
* The same as {@link EasyTransition#exit(Activity, long, TimeInterpolator)}
* with default duration
*/
public static void exit(Activity activity, TimeInterpolator interpolator) {
exit(activity, DEFAULT_TRANSITION_ANIM_DURATION, interpolator);
}
/**
* The same as {@link EasyTransition#exit(Activity, long, TimeInterpolator)}
* with no interpolator
*/
public static void exit(Activity activity, long duration) {
exit(activity, duration, null);
}
/**
* The same as {@link EasyTransition#exit(Activity, long, TimeInterpolator)}
* with default duration and no interpolator
*/
public static void exit(Activity activity) {
exit(activity, DEFAULT_TRANSITION_ANIM_DURATION, null);
}
private static void runExitAnimation(final Activity activity,
ArrayList<EasyTransitionOptions.ViewAttrs> attrs,
long duration,
TimeInterpolator interpolator) {
if (null == attrs || attrs.size() == 0)
return;
for (final EasyTransitionOptions.ViewAttrs attr : attrs) {
View view = activity.findViewById(attr.id);
int[] location = new int[2];
view.getLocationOnScreen(location);
view.setPivotX(0);
view.setPivotY(0);
view.animate()
.scaleX(attr.width / view.getWidth())
.scaleY(attr.height / view.getHeight())
.translationX(attr.startX - location[0])
.translationY(attr.startY - location[1])
.setInterpolator(interpolator)
.setDuration(duration);
}
activity.findViewById(attrs.get(0).id).postDelayed(new Runnable() {
@Override
public void run() {
activity.finish();
activity.overridePendingTransition(0, 0);
}
}, duration);
}
}
