У меня есть решение для вашего требования. Итак, попробуйте это. Но для этого вам нужно использовать режим рисования вместо режима просмотра изображения, чтобы рисовать или писать текст на изображении, выбранном из галереи.
Настоящим я публикую код.
activity_main.xml:
<LinearLayout 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:gravity="center"
android:orientation="vertical"
android:paddingBottom="5dp"
android:paddingTop="5dp"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageButton
android:id="@+id/buttonNew"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/start_new"
android:src="@drawable/new_pic" />
<ImageButton
android:id="@+id/buttonBrush"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/brush"
android:src="@drawable/brush" />
<ImageButton
android:id="@+id/buttonErase"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/erase"
android:src="@drawable/eraser" />
<ImageButton
android:id="@+id/buttonSave"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/save"
android:src="@drawable/save" />
<ImageButton
android:id="@+id/buttonPickImage"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/save"
android:src="@drawable/save" />
</LinearLayout>
<com.wordpress.priyankvex.paintapp.DrawingView
android:id="@+id/drawing"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="3dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="3dp"
android:layout_weight="1"
android:background="@color/white" />
<!-- Color pallet -->
<LinearLayout
android:id="@+id/paint_colors"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="@color/skin"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/pallet"
android:tag="@color/skin" />
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="@color/black"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/pallet"
android:tag="@color/black" />
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="@color/red"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/pallet"
android:tag="@color/red" />
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="@color/green"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/pallet"
android:tag="@color/green" />
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="@color/blue"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/pallet"
android:tag="@color/blue" />
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="@color/yellow"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/pallet"
android:tag="@color/yellow" />
</LinearLayout>
</LinearLayout>
MainActivity.java:
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import java.util.UUID;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private DrawingView mDrawingView;
private ImageButton currPaint, drawButton, eraseButton, newButton, saveButton, buttonPickImage;
private float smallBrush, mediumBrush, largeBrush;
private final int RESULT_LOAD_IMAGE = 20;
private Uri pickedImage;
private String imagePath = "";
public Bitmap PaintBitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawingView = (DrawingView) findViewById(R.id.drawing);
// Getting the initial paint color.
LinearLayout paintLayout = (LinearLayout) findViewById(R.id.paint_colors);
// 0th child is white color, so selecting first child to give black as initial color.
currPaint = (ImageButton) paintLayout.getChildAt(1);
currPaint.setImageDrawable(getResources().getDrawable(R.drawable.pallet_pressed));
drawButton = (ImageButton) findViewById(R.id.buttonBrush);
drawButton.setOnClickListener(this);
eraseButton = (ImageButton) findViewById(R.id.buttonErase);
eraseButton.setOnClickListener(this);
newButton = (ImageButton) findViewById(R.id.buttonNew);
newButton.setOnClickListener(this);
saveButton = (ImageButton) findViewById(R.id.buttonSave);
saveButton.setOnClickListener(this);
buttonPickImage = (ImageButton) findViewById(R.id.buttonPickImage);
buttonPickImage.setOnClickListener(this);
smallBrush = getResources().getInteger(R.integer.small_size);
mediumBrush = getResources().getInteger(R.integer.medium_size);
largeBrush = getResources().getInteger(R.integer.large_size);
// Set the initial brush size
mDrawingView.setBrushSize(mediumBrush);
}
/**
* Method is called when color is clicked from pallet.
*
* @param view ImageButton on which click took place.
*/
public void paintClicked(View view) {
if (view != currPaint) {
// Update the color
ImageButton imageButton = (ImageButton) view;
String colorTag = imageButton.getTag().toString();
mDrawingView.setColor(colorTag);
// Swap the backgrounds for last active and currently active image button.
imageButton.setImageDrawable(getResources().getDrawable(R.drawable.pallet_pressed));
currPaint.setImageDrawable(getResources().getDrawable(R.drawable.pallet));
currPaint = (ImageButton) view;
mDrawingView.setErase(false);
mDrawingView.setBrushSize(mDrawingView.getLastBrushSize());
}
}
@Override
public void onClick(View v) {
int id = v.getId();
switch (id) {
case R.id.buttonBrush:
// Show brush size chooser dialog
showBrushSizeChooserDialog();
break;
case R.id.buttonErase:
// Show eraser size chooser dialog
showEraserSizeChooserDialog();
break;
case R.id.buttonNew:
// Show new painting alert dialog
showNewPaintingAlertDialog();
break;
case R.id.buttonSave:
// Show save painting confirmation dialog.
showSavePaintingConfirmationDialog();
break;
case R.id.buttonPickImage:
// Show save painting confirmation dialog.
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK) {
pickedImage = data.getData();
String[] filePath = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(pickedImage, filePath, null, null, null);
cursor.moveToFirst();
imagePath = cursor.getString(cursor.getColumnIndex(filePath[0]));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
// set Gallery Image to Drawing-view
if (imagePath != null) {
PaintBitmap = getResizeBitmap(imagePath);
BitmapDrawable ob = new BitmapDrawable(getResources(), PaintBitmap);
mDrawingView.setBackgroundDrawable(ob);
}
}
}
}
public static Bitmap getResizeBitmap(String path) {
BitmapFactory.Options op = new BitmapFactory.Options();
op.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap bmap = BitmapFactory.decodeFile(path, op);
int nh = (int) (bmap.getHeight() * (1024.0 / bmap.getWidth()));
Bitmap bitmapThumbnail = Bitmap.createScaledBitmap(bmap, 1024, nh, true);
int bitmapWidthMain = bitmapThumbnail.getWidth();
int bitmapHeightMain = bitmapThumbnail.getHeight();
return bitmapThumbnail;
}
private void showBrushSizeChooserDialog() {
final Dialog brushDialog = new Dialog(this);
brushDialog.setContentView(R.layout.dialog_brush_size);
brushDialog.setTitle("Brush size:");
ImageButton smallBtn = (ImageButton) brushDialog.findViewById(R.id.small_brush);
smallBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDrawingView.setBrushSize(smallBrush);
mDrawingView.setLastBrushSize(smallBrush);
brushDialog.dismiss();
}
});
ImageButton mediumBtn = (ImageButton) brushDialog.findViewById(R.id.medium_brush);
mediumBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDrawingView.setBrushSize(mediumBrush);
mDrawingView.setLastBrushSize(mediumBrush);
brushDialog.dismiss();
}
});
ImageButton largeBtn = (ImageButton) brushDialog.findViewById(R.id.large_brush);
largeBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDrawingView.setBrushSize(largeBrush);
mDrawingView.setLastBrushSize(largeBrush);
brushDialog.dismiss();
}
});
mDrawingView.setErase(false);
brushDialog.show();
}
private void showEraserSizeChooserDialog() {
final Dialog brushDialog = new Dialog(this);
brushDialog.setTitle("Eraser size:");
brushDialog.setContentView(R.layout.dialog_brush_size);
ImageButton smallBtn = (ImageButton) brushDialog.findViewById(R.id.small_brush);
smallBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDrawingView.setErase(true);
mDrawingView.setBrushSize(smallBrush);
brushDialog.dismiss();
}
});
ImageButton mediumBtn = (ImageButton) brushDialog.findViewById(R.id.medium_brush);
mediumBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDrawingView.setErase(true);
mDrawingView.setBrushSize(mediumBrush);
brushDialog.dismiss();
}
});
ImageButton largeBtn = (ImageButton) brushDialog.findViewById(R.id.large_brush);
largeBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mDrawingView.setErase(true);
mDrawingView.setBrushSize(largeBrush);
brushDialog.dismiss();
}
});
brushDialog.show();
}
private void showNewPaintingAlertDialog() {
AlertDialog.Builder newDialog = new AlertDialog.Builder(this);
newDialog.setTitle("New drawing");
newDialog.setMessage("Start new drawing (you will lose the current drawing)?");
newDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mDrawingView.startNew();
dialog.dismiss();
}
});
newDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
newDialog.show();
}
private void showSavePaintingConfirmationDialog() {
AlertDialog.Builder saveDialog = new AlertDialog.Builder(this);
saveDialog.setTitle("Save drawing");
saveDialog.setMessage("Save drawing to device Gallery?");
saveDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//save drawing
mDrawingView.setDrawingCacheEnabled(true);
String imgSaved = MediaStore.Images.Media.insertImage(
getContentResolver(), mDrawingView.getDrawingCache(),
UUID.randomUUID().toString() + ".png", "drawing");
if (imgSaved != null) {
Toast savedToast = Toast.makeText(getApplicationContext(),
"Drawing saved to Gallery!", Toast.LENGTH_SHORT);
savedToast.show();
} else {
Toast unsavedToast = Toast.makeText(getApplicationContext(),
"Oops! Image could not be saved.", Toast.LENGTH_SHORT);
unsavedToast.show();
}
// Destroy the current cache.
mDrawingView.destroyDrawingCache();
}
});
saveDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
saveDialog.show();
}
}
Манифест.xml:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Попробуйте этот код, он включает кисть для рисования текста на изображении с разным размером кисти, ластик и палитру цветов для рисования текста разными цветами на тексте, и да, он сохранит изображение с текстом в галерее.
Настоящим прилагаю скриншот,
Надеюсь, это поможет вам. :)
person
jeel raja
schedule
04.01.2017
