Animation transition between activities using FLAG

问题:

In my android app, I'm making a method that pop all activities and bring up the first activity.

I use this code:

Intent intent = new Intent(this, MMConnection.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
this.startActivity(intent);

As I noticed that the transition was still a left to right animation, does someone know if there is a way to change system animation when starting an activity?

Actually, I'd ideally like to have a right to left transition (like when the return button is tapped)

thanks for help!

回答1:

CoolMcGrr is right, you want to use overridePendingTransition(int enterAnim, int exitAnim).

To specifically get the standard "back button" transition, I use these as the enterAnim and exitAnim transitions:

push_right_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromXDelta="-100%p" android:toXDelta="0" android:duration="@android:integer/config_shortAnimTime"/>
    <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="@android:integer/config_shortAnimTime" />
</set>

---

push_right_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromXDelta="0" android:toXDelta="100%p" android:duration="@android:integer/config_shortAnimTime"/>
    <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="@android:integer/config_shortAnimTime" />
</set>

回答2:

You should take a look Activity.overridePendingTransition().

Of course, this requires that you run at least version 2.0 of the SDK.

回答3:

Problem occurs nowadays because pre-ICS and ICS have different built-in activity transitions. This is much cleaner than defining your own animation and SDK independant:

Intent intent = new Intent(this, MMConnection.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_NO_ANIMATION);
this.startActivity(intent);
finish();

This will start the activity (not visible yet) and play the "activity finish" transition to the new activity.

回答4:

I used this code:

overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);

You can see these examples in GmailAnimation or LopeAnimations. Also you can see more in this Blog.