EasyTransition

A light transition lib(with only 2 files...) for Android, scince shared elements transition is not supported before LOLLIPOP, using EasyTransition can easily make fun transition animation between elements in two activities. Enjoy it!

ScreenShots

Usage

1.Using same ids between two Views in two layouts.

    <!-- Activity A -->
    <ImageView
        android:id="@+id/iv_icon"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:src="@mipmap/avatar_male"
        />
    
    <!-- Activity B -->
    <ImageView
        android:id="@+id/iv_icon"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:src="@mipmap/avatar_male"
        />

2.In Activity A, make transition options, and start Activity B with EasyTransition#startActivity.

    // ready for transition options
    EasyTransitionOptions options =
        EasyTransitionOptions.makeTransitionOptions(
            ActivityA.this,
            findViewById(R.id.iv_icon),
            findViewById(R.id.tv_name)); // add as many views as you like

    // start transition
    Intent intent = new Intent(ActivityA.this, ActivityB.class);
    EasyTransition.startActivity(intent, options);

3.In Activity B, enter transition when creating, and exit transition when backing.

    // onCreate
    EasyTransition.enter(ActivityB.this);
    
    // onBackPressed
    EasyTransition.exit(ActivityB.this);

Attributes

Usage above is only the minimum choice, you can set attributes like duration, time interpolator and so on, have fun!