How to add custom text over a Bitmap image from your Android App?
In this video it shows the steps to add text over an existing image by reading it in Bitmap format. It creates a Canvas using the Bitmap and then calls drawText option to edit the bitmap file.
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Complete source code and other details/ steps of this video are posted in the below link:
https://programmerworld.co/android/ho...
However, the main Java code is copied below also for reference:
package com.programmerworld.textonbitmapimage;
import static android.Manifest.permission.READ_MEDIA_IMAGES;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
public class MainActivity extends AppCompatActivity {
private ImageView imageView;
private EditText editText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_main);
ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) - {
Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
ActivityCompat.requestPermissions(this,
new String[]{READ_MEDIA_IMAGES},
PackageManager.PERMISSION_GRANTED);
imageView = findViewById(R.id.imageView);
editText = findViewById(R.id.editTextText);
return insets;
});
}
public void buttonAddTextOverImage(View view){
try {
StorageManager storageManager = (StorageManager) getSystemService(STORAGE_SERVICE);
StorageVolume storageVolume = storageManager.getStorageVolumes().get(0); // 0 is for internal storage.
File fileInput = new File(storageVolume.getDirectory().getPath() +
"/Download/flower.jpg");
File fileOutput = new File(storageVolume.getDirectory().getPath() +
"/Download/" + System.currentTimeMillis() + ".jpg");
Bitmap bitmapInputImage = BitmapFactory.decodeFile(fileInput.getPath());
Bitmap bitmapOutputImage = bitmapInputImage.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(bitmapOutputImage);
Paint paint = new Paint();
paint.setColor(Color.WHITE);
paint.setTextSize(20);
canvas.drawText(editText.getText().toString(),
5, 50, paint);
imageView.setImageBitmap(bitmapOutputImage);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmapOutputImage.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
byte[] bytesArray = byteArrayOutputStream.toByteArray();
FileOutputStream fileOutputStream = new FileOutputStream(fileOutput);
fileOutputStream.write(bytesArray);
fileOutputStream.close();
} catch (Exception e) {
editText.setText(e.toString());
}
}
}
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Auf dieser Seite können Sie das Online-Video How to add custom text over a Bitmap image from your Android App? mit der Dauer stunde minuten sekunde in guter Qualität ansehen, das der Benutzer Programmer World 08 April 2024 hochgeladen hat, den Link mit Freunden und Bekannten teilen, dieses Video wurde auf Youtube bereits 185 Mal angesehen und es wurde von 3 den Zuschauern gefallen. Viel Spaß beim Betrachtenden Zuschauern gefallen!
