The following code solves OOM errors by loading big images to imageview by ensuring the application doesn't exceed the memory limit of the app and mobile. Here is a piece of code from my app.
Unfortunately i am getting error E/AndroidRuntime: FATAL EXCEPTION: main java.lang.NullPointerException at line 285 bitmap1.compress(Bitmap.CompressFormat.JPEG, 80, baos); at line 320 final String imageView1 = getStringImage1(bitmap1); and at line 189ImageUploadToServerFunction();
Where could i be going wrong?. Thank you in advance.
SelectImageGallery1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Image1 From Gallery"), 1);
}
});
SelectImageGallery2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Image4 From Gallery"), 2);
}
});
SelectImageGallery3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Image3 From Gallery"), 3);
}
});
SelectImageGallery4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Image4 From Gallery"), 4);
}
});
UploadImageServer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GetImageNameEditText1 = imageName1.getText().toString();
GetImageNameEditText2 = imageName2.getText().toString();
GetImageNameEditText3 = imageName3.getText().toString();
GetImageNameEditText4 = imageName4.getText().toString();
ImageUploadToServerFunction();
}
});
}
@Override
protected void onActivityResult(int RC, int RQC, Intent I) {
super.onActivityResult(RC, RQC, I);
if (RC == 1 && RQC == RESULT_OK && I != null && I.getData() != null) {
Uri uri = I.getData();
RequestOptions options = new RequestOptions()
.format(DecodeFormat.PREFER_RGB_565)
.placeholder(R.drawable.ic_launcher_background)
.error(R.drawable.ic_launcher_background);
Glide.with(this)
.setDefaultRequestOptions(options)
.load(uri)
.centerInside()
.into(new CustomTarget<Drawable>(512, 512) {
@Override
public void onResourceReady(@NonNull Drawable resource1, @Nullable Transition<? super Drawable> transition) {
imageView1.setImageDrawable(resource1);
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
});
}
if (RC == 2 && RQC == RESULT_OK && I != null && I.getData() != null) {
Uri uri = I.getData();
RequestOptions options = new RequestOptions()
.format(DecodeFormat.PREFER_RGB_565)
.placeholder(R.drawable.ic_launcher_background)
.error(R.drawable.ic_launcher_background);
Glide.with(this)
.setDefaultRequestOptions(options)
.load(uri)
.centerInside()
.into(new CustomTarget<Drawable>(512, 512) {
@Override
public void onResourceReady(@NonNull Drawable resource2, @Nullable Transition<? super Drawable> transition) {
imageView2.setImageDrawable(resource2);
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
});
}
if (RC == 3 && RQC == RESULT_OK && I != null && I.getData() != null) {
Uri uri = I.getData();
RequestOptions options = new RequestOptions()
.format(DecodeFormat.PREFER_RGB_565)
.placeholder(R.drawable.ic_launcher_background)
.error(R.drawable.ic_launcher_background);
Glide.with(this)
.setDefaultRequestOptions(options)
.load(uri)
.centerInside()
.into(new CustomTarget<Drawable>(512, 512) {
@Override
public void onResourceReady(@NonNull Drawable resource3, @Nullable Transition<? super Drawable> transition) {
imageView3.setImageDrawable(resource3);
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
});
}
if (RC == 4 && RQC == RESULT_OK && I != null && I.getData() != null) {
Uri uri = I.getData();
RequestOptions options = new RequestOptions()
.format(DecodeFormat.PREFER_RGB_565)
.placeholder(R.drawable.ic_launcher_background)
.error(R.drawable.ic_launcher_background);
Glide.with(this)
.setDefaultRequestOptions(options)
.load(uri)
.centerInside()
.into(new CustomTarget<Drawable>(512, 512) {
@Override
public void onResourceReady(@NonNull Drawable resource4, @Nullable Transition<? super Drawable> transition) {
imageView4.setImageDrawable(resource4);
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
});
}
}
public String getStringImage1(Bitmap bitmap1){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap1.compress(Bitmap.CompressFormat.JPEG, 80, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage1 = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage1;
}
public String getStringImage2(Bitmap bitmap2){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap2.compress(Bitmap.CompressFormat.JPEG, 80, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage2 = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage2;
}
public String getStringImage3(Bitmap bitmap3){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap3.compress(Bitmap.CompressFormat.JPEG, 80, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage3 = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage3;
}
public String getStringImage4(Bitmap bitmap4){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap4.compress(Bitmap.CompressFormat.JPEG, 80, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage4 = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage4;
}
public void ImageUploadToServerFunction(){
final String imageName1 = GetImageNameEditText1.trim();
final String imageName2 = GetImageNameEditText2.trim();
final String imageName3 = GetImageNameEditText3.trim();
final String imageName4 = GetImageNameEditText4.trim();
final String imageView1 = getStringImage1(bitmap1);
final String imageView2 = getStringImage2(bitmap2);
final String imageView3 = getStringImage3(bitmap3);
final String imageView4 = getStringImage4(bitmap4);
