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Judul : How to make a Simple Camera Android App
link : How to make a Simple Camera Android App

How to make a Simple Camera Android App

Sample Video of How to launch default camera i.e. device camera on one click and take image as well as set as device wallpaper.

Let's make this project.

1. Start a new project and named it 'CameraApp' then click Next.

2. Choose a 'Blank Activity'  and named it 'CameraActivity'. and then finish.

3. In the CameraActivity.java use the below codes

import android.content.Intent; import android.graphics.Bitmap; import android.os.Bundle; import android.provider.MediaStore; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import java.io.IOException; public class CameraActivity extends AppCompatActivity {     ImageView mImageView;     Button mSetButton, mCameraButton;     static final int dataStore = 0;     protected Bitmap bmp;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_camera);         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);         setSupportActionBar(toolbar);         initializeVar();         mCameraButton.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                 startActivityForResult(intent, dataStore);             }         });         mSetButton.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 try {                     getApplicationContext().setWallpaper(bmp);                 } catch (IOException e) {                     e.printStackTrace();                 }             }         });     }     private void initializeVar() {         mCameraButton = (Button) findViewById(R.id.cameraButton);         mSetButton = (Button) findViewById(R.id.setButton);         mImageView = (ImageView)findViewById(R.id.imageView);     }     @Override     protected void onActivityResult(int requestCode, int resultCode, Intent data) {         super.onActivityResult(requestCode, resultCode, data);         if(resultCode == RESULT_OK){             Bundle extras = data.getExtras();             bmp = (Bitmap)extras.get("data");             mImageView.setImageBitmap(bmp);         }         else {             Toast.makeText(CameraActivity.this, "There was an error", Toast.LENGTH_SHORT).show();         }     } }

4. In content_camera.xml file use the below codes...

<?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"     android:paddingBottom="@dimen/activity_vertical_margin"     android:paddingLeft="@dimen/activity_horizontal_margin"     android:paddingRight="@dimen/activity_horizontal_margin"     android:paddingTop="@dimen/activity_vertical_margin"     app:layout_behavior="@string/appbar_scrolling_view_behavior"     tools:context="gracious.cameraapp.CameraActivity"     tools:showIn="@layout/activity_camera">     <ImageView         android:layout_width="match_parent"         android:layout_height="350dp"         android:id="@+id/imageView"         android:background="#e9e4ed"         android:layout_alignParentTop="true" android:layout_alignParentLeft="true"         android:layout_alignParentStart="true"/>     <Button         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:text="Camera"         android:id="@+id/cameraButton"  android:layout_alignParentBottom="true"         android:layout_centerHorizontal="true"  android:layout_marginBottom="106dp"/>     <Button         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:text="Set Wallpaper"         android:id="@+id/setButton" android:layout_alignParentBottom="true"         android:layout_centerHorizontal="true" android:layout_marginBottom="44dp"/> </RelativeLayout>

5. To set the device wallpaper you need to include a permission, include the below code in your manifest file.

<uses-permission android:name="android.permission.SET_WALLPAPER"/>

6. Project Layout





Happy Programming :)

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