Gallery Control Android Ex.
******************************* Main .xml ******************************
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:gravity="center_horizontal"
tools:context=".MainActivity">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/img"
android:src="@mipmap/ic_launcher"/>
<Gallery
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/gal"/>
</LinearLayout>
************************ Main .java ************************************
package com.example.gallery;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
ImageView imageView;
Gallery gallery;
Integer photo[]={R.drawable.ch1,
R.drawable.ch2,
R.drawable.ch3,
R.drawable.ch4,
R.drawable.ch5,
R.drawable.ch7,
R.drawable.gh6,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView=(ImageView) findViewById(R.id.img);
gallery=(Gallery)findViewById(R.id.gal);
gallery.setAdapter(new ImageAdapter(this));
gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
imageView.setImageResource(photo[position]);
}
});
}
public class ImageAdapter extends BaseAdapter
{
Context context;
public ImageAdapter(Context context) {
this.context = context;
}
@Override
public int getCount() {
return photo.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView1=new ImageView(MainActivity.this);
imageView1.setImageResource(photo[position]);
return imageView1;
}
}
}
******************************* Main .xml ******************************
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:gravity="center_horizontal"
tools:context=".MainActivity">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/img"
android:src="@mipmap/ic_launcher"/>
<Gallery
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/gal"/>
</LinearLayout>
************************ Main .java ************************************
package com.example.gallery;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
ImageView imageView;
Gallery gallery;
Integer photo[]={R.drawable.ch1,
R.drawable.ch2,
R.drawable.ch3,
R.drawable.ch4,
R.drawable.ch5,
R.drawable.ch7,
R.drawable.gh6,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView=(ImageView) findViewById(R.id.img);
gallery=(Gallery)findViewById(R.id.gal);
gallery.setAdapter(new ImageAdapter(this));
gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
imageView.setImageResource(photo[position]);
}
});
}
public class ImageAdapter extends BaseAdapter
{
Context context;
public ImageAdapter(Context context) {
this.context = context;
}
@Override
public int getCount() {
return photo.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView1=new ImageView(MainActivity.this);
imageView1.setImageResource(photo[position]);
return imageView1;
}
}
}
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