I have a layout hidden from the view. On a button click I want it to slide up from the bottom pushing the entire screen contents upwards, very similar to how whatsapp shows emoticons panel in chat screen.
I have seen SlidingDrawer, that dosen't work for me. It requires an image as an handle which is shown at the center of the screen, I don't want that. It also slides over the existing screen content, I am looking for a way to move the existing content upwards.
Update 1:
I tried using the animations as suggested by Sanket Kachhela. But the hidden layout is never shown. Here is the code.
Layout (activity_main.xml):
<RelativeLayout
android:id="@+id/main_screen"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:layout_alignParentTop="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:layout_centerInParent="true"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Slide up / down"
android:layout_alignParentBottom="true"
android:onClick="slideUpDown"/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/hidden_panel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/main_screen">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/app_name" />
</RelativeLayout>
Activity (MainActivity.java):
package com.example.slideuplayout;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
public class MainActivity extends Activity {
private ViewGroup hiddenPanel;
private boolean isPanelShown;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
hiddenPanel = (ViewGroup)findViewById(R.id.hidden_panel);
hiddenPanel.setVisibility(View.INVISIBLE);
isPanelShown = false;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void slideUpDown(final View view) {
if(!isPanelShown) {
// Show the panel
Animation bottomUp = AnimationUtils.loadAnimation(this,
R.anim.bottom_up);
hiddenPanel.startAnimation(bottomUp);
hiddenPanel.setVisibility(View.VISIBLE);
isPanelShown = true;
}
else {
// Hide the Panel
Animation bottomDown = AnimationUtils.loadAnimation(this,
R.anim.bottom_down);
hiddenPanel.startAnimation(bottomDown);
hiddenPanel.setVisibility(View.INVISIBLE);
isPanelShown = false;
}
}
}
Animations:
bottom_up.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromYDelta="75%p"
android:toYDelta="0%p"
android:fillAfter="true"
android:duration="500" />
</set>
bottom_down.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromYDelta="0%p"
android:toYDelta="100%p"
android:fillAfter="true"
android:interpolator="@android:anim/linear_interpolator"
android:duration="500" />
</set>
Any ideas how this can be done ?
Thanks.
