Mega Code Archive
Draw on Picture and save
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package app.test;
import java.io.FileNotFoundException;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.ImageView;
import java.io.OutputStream;
import android.content.ContentValues;
import android.graphics.Bitmap.CompressFormat;
import android.provider.MediaStore.Images.Media;
import android.widget.Toast;
public class Test extends Activity implements OnClickListener,
OnTouchListener {
ImageView choosenImageView;
Button choosePicture;
Button savePicture;
Bitmap bmp;
Bitmap alteredBitmap;
Canvas canvas;
Paint paint;
Matrix matrix;
float downx = 0;
float downy = 0;
float upx = 0;
float upy = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
choosenImageView = (ImageView) this.findViewById(R.id.ChoosenImageView);
choosePicture = (Button) this.findViewById(R.id.ChoosePictureButton);
savePicture = (Button) this.findViewById(R.id.SavePictureButton);
savePicture.setOnClickListener(this);
choosePicture.setOnClickListener(this);
choosenImageView.setOnTouchListener(this);
}
public void onClick(View v) {
if (v == choosePicture) {
Intent choosePictureIntent = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(choosePictureIntent, 0);
} else if (v == savePicture) {
if (alteredBitmap != null) {
ContentValues contentValues = new ContentValues(3);
contentValues.put(Media.DISPLAY_NAME, "Draw On Me");
Uri imageFileUri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, contentValues);
try {
OutputStream imageFileOS = getContentResolver().openOutputStream(imageFileUri);
alteredBitmap.compress(CompressFormat.JPEG, 90, imageFileOS);
Toast t = Toast.makeText(this, "Saved!", Toast.LENGTH_SHORT);
t.show();
} catch (Exception e) {
Log.v("EXCEPTION", e.getMessage());
}
}
}
}
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if (resultCode == RESULT_OK) {
Uri imageFileUri = intent.getData();
try {
BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
bmpFactoryOptions.inJustDecodeBounds = true;
bmp = BitmapFactory.decodeStream(getContentResolver().openInputStream(
imageFileUri), null, bmpFactoryOptions);
bmpFactoryOptions.inJustDecodeBounds = false;
bmp = BitmapFactory.decodeStream(getContentResolver().openInputStream(
imageFileUri), null, bmpFactoryOptions);
alteredBitmap = Bitmap.createBitmap(bmp.getWidth(), bmp
.getHeight(), bmp.getConfig());
canvas = new Canvas(alteredBitmap);
paint = new Paint();
paint.setColor(Color.GREEN);
paint.setStrokeWidth(5);
matrix = new Matrix();
canvas.drawBitmap(bmp, matrix, paint);
choosenImageView.setImageBitmap(alteredBitmap);
choosenImageView.setOnTouchListener(this);
} catch (Exception e) {
Log.v("ERROR", e.toString());
}
}
}
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
downx = event.getX();
downy = event.getY();
break;
case MotionEvent.ACTION_MOVE:
upx = event.getX();
upy = event.getY();
canvas.drawLine(downx, downy, upx, upy, paint);
choosenImageView.invalidate();
downx = upx;
downy = upy;
break;
case MotionEvent.ACTION_UP:
upx = event.getX();
upy = event.getY();
canvas.drawLine(downx, downy, upx, upy, paint);
choosenImageView.invalidate();
break;
case MotionEvent.ACTION_CANCEL:
break;
default:
break;
}
return true;
}
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Choose Picture" android:id="@+id/ChoosePictureButton"/>
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ChoosenImageView">
</ImageView>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Save Picture" android:id="@+id/SavePictureButton"/>
</LinearLayout>
]]>