Simple Camera App Android

Java file



package com.example.cameratry;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity {
private static final int CAMERA_PIC_REQUEST = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = (Button)findViewById(R.id.button1);

btn.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);


}
});

}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
   if (requestCode == CAMERA_PIC_REQUEST) {
       // do something
    Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
    ImageView image = (ImageView) findViewById(R.id.photoResultView);
    image.setImageBitmap(thumbnail);
   }
}

@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;
}

}



XML
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="38dp"
        android:layout_marginTop="66dp"
        android:text="Button" />

    <ImageView
        android:id="@+id/photoResultView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/button1"
        android:layout_below="@+id/button1"
        android:layout_marginRight="26dp"
        android:layout_marginTop="143dp"
        android:src="@drawable/ic_launcher" />

</RelativeLayout>

add this in manifest <uses-feature android:name="android.hardware.camera"></uses-feature>

source http://mobile.tutsplus.com/tutorials/android/android-sdk-quick-tip-launching-the-camera/