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POTop to bottom - translate animation
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  1. POTop to bottom - translate animation
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    copied!<p>Need to make next animation (on android 2.2 and above):</p> <p>1.Moving button from top to bottom (after clicking on him), </p> <p>2.Moving back from bottom to top (After clicking on him again).</p> <p>First animation works fine, but the second not, the btn "jumps" from bottom to top and not animate.</p> <p>Code:</p> <pre><code>public class MainActivity extends Activity { static RelativeLayout relativeLayout; static Button btn; static Boolean isUp = true; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btn = (Button) findViewById(R.id.button1); relativeLayout = (RelativeLayout) findViewById(R.id.relative_layout); btn.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { if(isUp){ isUp = false; v.startAnimation(MainActivity.getVerticalSlideAnimation(0,relativeLayout.getBottom() - v.getHeight(),500,0)); }else{ isUp = true; v.startAnimation(MainActivity.getVerticalSlideAnimation(relativeLayout.getBottom() - v.getHeight(),0,500,0)); } } }); } public static Animation getVerticalSlideAnimation(int fromYPosition, final int toYPosition, int duration, int startOffset) { TranslateAnimation translateAnimation = new TranslateAnimation(1, 0.0F, 1, 0.0F, 0, fromYPosition, 0, toYPosition); translateAnimation.setDuration(duration); translateAnimation.setInterpolator(new AccelerateInterpolator()); translateAnimation.setStartOffset(startOffset); //Stop animation after finishing. //translateAnimation.setFillAfter(true); translateAnimation.setAnimationListener(new AnimationListener() { public void onAnimationStart(Animation animation) { } public void onAnimationRepeat(Animation animation) { } public void onAnimationEnd(Animation animation) { btn.setY(toYPosition); } }); return translateAnimation; } } </code></pre> <p>Layout:</p> <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/relative_layout" android:layout_width="match_parent" android:layout_height="match_parent" &gt; &lt;Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:text="Button" /&gt; &lt;/RelativeLayout&gt; </code></pre>
 

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