elevation effect of overlapped view

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This example show how elevation effect of overlapped view.


package com.blogspot.android_er.androidzelevation;

import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

SeekBar seekBarZ1, seekBarZ2;
ImageView image1;
TextView text2;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

seekBarZ1 = (SeekBar)findViewById(R.id.z1);
seekBarZ2 = (SeekBar)findViewById(R.id.z2);
image1 = (ImageView)findViewById(R.id.image1);
text2 = (TextView)findViewById(R.id.text2);

seekBarZ1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
image1.setZ(i);
}
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
});

seekBarZ2.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
text2.setZ(i);
text2.setText("elevation: " + String.valueOf(i) + "px");
}
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
});
}
}


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:orientation="vertical"
tools:context="com.blogspot.android_er.androidzelevation.MainActivity">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold"/>

<SeekBar
android:id="@+id/z1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:progress="10"
android:max="50"/>
<SeekBar
android:id="@+id/z2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:progress="5"
android:max="50"/>

<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/image1"
android:layout_width="200dp"
android:layout_height="200dp"
android:elevation="10px"
android:background="#90F0F0F0"
android:src="@mipmap/ic_launcher"/>
<TextView
android:id="@+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:elevation="5px"
android:textSize="40dp"
android:background="#90F0F0F0"
android:text="elevation: 5px"/>
</FrameLayout>

</LinearLayout>


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