android - Slide in animation example

activity_main.xml

 <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:id="@+id/coordinator_layout"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="#e7ece3"     >     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Slide In Animation"         android:layout_margin="25dp"         android:layout_gravity="top|center_horizontal"         />     <TextView         android:id="@+id/tv"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:text="Sample TextView"         android:textSize="25sp"         android:visibility="invisible"         android:gravity="center_horizontal"         android:textColor="#ff0000"         android:layout_margin="35dp"         app:layout_anchor="@id/btn"         android:layout_gravity="bottom|center_horizontal"         app:layout_anchorGravity="bottom|center_horizontal"         /> </android.support.design.widget.CoordinatorLayout> 

MainActivity.java

 package com.cfsuman.me.androidcodesnippets;  import android.app.Activity; import android.content.Context; import android.support.design.widget.CoordinatorLayout; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.transition.Slide; import android.transition.TransitionManager; import android.view.Gravity; import android.view.View; import android.widget.Button; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {     private Context mContext;     private Activity mActivity;      private CoordinatorLayout mCLayout;     private Button mButton;     private TextView mTextView;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the application context         mContext = getApplicationContext();         mActivity = MainActivity.this;          // Get the widget reference from XML layout         mCLayout = (CoordinatorLayout) findViewById(R.id.coordinator_layout);         mButton = (Button) findViewById(R.id.btn);         mTextView = (TextView) findViewById(R.id.tv);          // Initialize a new click listener for button widget         mButton.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 /*                     android.transition.Slide                         This transition tracks changes to the visibility of target views in the                         start and end scenes and moves views in or out from one of the edges of                         the scene. Visibility is determined by both the setVisibility(int) state                         of the view as well as whether it is parented in the current view hierarchy.                         Disappearing Views are limited as described in                         onDisappear(android.view.ViewGroup, TransitionValues, int, TransitionValues, int).                 */                 // Call requires API level 21                 Slide slide = new Slide();                  /*                     setSlideEdge(int slideEdge)                         Change the edge that Views appear and disappear from.                 */                 slide.setSlideEdge(Gravity.LEFT); // Slide in left                 //slide.setSlideEdge(Gravity.TOP); // Slide in top                 //slide.setSlideEdge(Gravity.RIGHT); // Slide in right                 //slide.setSlideEdge(Gravity.BOTTOM); // Slide in bottom                  /*                     beginDelayedTransition(ViewGroup sceneRoot, Transition transition)                         Convenience method to animate to a new scene defined by all changes within                         the given scene root between calling this method and the next rendering frame.                 */                 TransitionManager.beginDelayedTransition(mCLayout,slide);                 mTextView.setVisibility(View.VISIBLE);             }         });     } }