In this video it shows the steps to save a bitmap to image file in download folder from your Android App programmatically. It demonstrates this for Android 14 | API level 34.
In this video it refers to the code from my below pages of posted earlier:
https://programmerworld.co/android/how-to-fix-the-error-only-mutable-bitmaps-may-be-reconfigured-convert-immutable-bitmap-to-a-mutable-bitmap-in-android-app/
https://programmerworld.co/android/how-to-create-and-save-an-image-file-in-download-folder-from-your-android-app-android-13-api-33/
I hope you like this video. For any questions, suggestions or appreciation please contact us at: https://programmerworld.co/contact/ or email at: programmerworld1990@gmail.com
Complete source code and other details:
package com.programmerworld.savebitmaptoimagefile;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.view.View;
import android.widget.ImageView;
import androidx.appcompat.app.AppCompatActivity;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
public class MainActivity extends AppCompatActivity {
private ImageView imageView;
private URL url;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageView);
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
url = new URL("https://i0.wp.com/programmerworld.co/wp-content/uploads/2023/05/flower.png?w=977&ssl=1");
bitmap = BitmapFactory.decodeStream(url.openStream());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
});
thread.start();
}
public void buttonSaveImage(View view){
imageView.setImageBitmap(bitmap);
StorageManager storageManager = (StorageManager) getSystemService(STORAGE_SERVICE);
StorageVolume storageVolume = storageManager.getStorageVolumes().get(0); // internal Storage
File fileImage = new File(storageVolume.getDirectory().getPath() + "/Download/"
+ System.currentTimeMillis()
+ ".jpeg");
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
byte[] bytesArray = byteArrayOutputStream.toByteArray();
try {
FileOutputStream fileOutputStream = new FileOutputStream(fileImage);
fileOutputStream.write(bytesArray);
fileOutputStream.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.SaveBitmapToImageFile"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>plugins {
id("com.android.application")
}
android {
namespace = "com.programmerworld.savebitmaptoimagefile"
compileSdk = 34
defaultConfig {
applicationId = "com.programmerworld.savebitmaptoimagefile"
minSdk = 34
targetSdk = 34
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
}
dependencies {
implementation("androidx.appcompat:appcompat:1.6.1")
implementation("com.google.android.material:material:1.9.0")
implementation("androidx.constraintlayout:constraintlayout:2.1.4")
testImplementation("junit:junit:4.13.2")
androidTestImplementation("androidx.test.ext:junit:1.1.5")
androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
}<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="144dp"
android:layout_marginTop="40dp"
android:onClick="buttonSaveImage"
android:text="Save Image"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/imageView"
android:layout_width="345dp"
android:layout_height="336dp"
android:layout_marginStart="32dp"
android:layout_marginTop="60dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button"
app:srcCompat="@drawable/ic_launcher_background" />
</androidx.constraintlayout.widget.ConstraintLayout>Screenshots:
