从图库/照片中选择后,如何在加载到imageview之前调整图像大小?否则,大图像会导致OOM问题。
SelectImageGallery.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 Image From Gallery"), 1);
}
}
Uri uri = I.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
imageView.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
答案 0 :(得分:0)
尝试:
Bitmap resized_Bitmap = Bitmap.createScaledBitmap(yourBitmap, newWidth, newHeight, true);
imageView.setImageBitmap( resized_Bitmap);
答案 1 :(得分:0)
参考this答案
您可以这样调整位图大小
import android.graphics.Matrix
public Bitmap getResizedBitmap(Bitmap bm, int newWidth, int newHeight) {
int width = bm.getWidth();
int height = bm.getHeight();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// CREATE A MATRIX FOR THE MANIPULATION
Matrix matrix = new Matrix();
// RESIZE THE BIT MAP
matrix.postScale(scaleWidth, scaleHeight);
// "RECREATE" THE NEW BITMAP
Bitmap resizedBitmap = Bitmap.createBitmap(
bm, 0, 0, width, height, matrix, false);
bm.recycle();
return resizedBitmap;
}
答案 2 :(得分:0)
面对OOM问题时,您可以通过
删除此问题1)减小位图的大小和
2)通过更改gradle.properties和AndroidManifest文件来增加应用的大小
gradle.properties org.gradle.jvmargs = -Xmx1536m
Android清单 android:largeHeap =“ true”,android:hardwareAccelerated =“ true”
答案 3 :(得分:0)
对于那些将来可能需要它的人,我终于使用滑行解决了它。 选择意图
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);
}
}
使用Glide将图像设置为Imageview
@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)
.asBitmap()
.load(uri)
.centerInside()
.into(new CustomTarget<Bitmap>(512, 512) {
@Override
public void onResourceReady(@NonNull Bitmap bitmap1, @Nullable Transition<? super Bitmap> transition) {
imageView1.setImageBitmap(bitmap1);
MainActivity.this.bitmap1 = bitmap1;
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
});
}