Android App Magic Ball 8
package com.example.viraj.magic_8_ball;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import java.util.Random;
public class MainActivity extends AppCompatActivity {
private Button rollbutton;
private ImageView imageview;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rollbutton=(Button)findViewById(R.id.id_button);
imageview=(ImageView)findViewById(R.id.id_image);
final int [] arrayimage={
R.drawable.ball1,
R.drawable.ball2,
R.drawable.ball3,
R.drawable.ball4,
R.drawable.ball5
};
rollbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Random random=new Random();
int randomnogene=random.nextInt(arrayimage.length);//or int randomnogene=random.nextInt(5);
imageview.setImageResource(arrayimage[randomnogene]);
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.viraj.magic_8_ball.MainActivity"
android:background="#4FC3F7">
<TextView
android:id="@+id/text_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:text="@string/txttitle"
android:textAlignment="center"
android:textColor="#E91E63"
android:textSize="20sp"
android:textStyle="bold" />
<ImageView
android:id="@+id/id_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
app:srcCompat="@drawable/ball1" />
<Button
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/id_image"
android:layout_centerHorizontal="true"
android:layout_marginTop="41dp"
android:shadowColor="#FF5722"
android:textColor="#E91E63"
android:textStyle="bold"
android:text="@string/buttonname" />
</RelativeLayout>
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