我想在我的应用程序中添加功能，以将GIF图片从url下载到手机存储中。 如何在我的应用程序中做到这一点
public class Download {
Context context;
String url;
ProgressDialog progressDailog;
public void saveImage(Context context, String url) {
this.context = context;
this.url = url;
progressDailog = new ProgressDialog(context);
progressDailog.setMax(100);
progressDailog.setMessage("Please wait...");
progressDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progressDailog.setCanceledOnTouchOutside(false);
progressDailog.show();
Glide.with(context).asBitmap()
.load(url)
.apply(new RequestOptions()
.diskCacheStrategyOf(DiskCacheStrategy.ALL)
.format(DecodeFormat.PREFER_ARGB_8888)
.override(Target.SIZE_ORIGINAL))
.into(new SimpleTarget<Bitmap>() {
@Override
public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
progressDailog.dismiss();
storeImage(resource);
//Log.d(TAG, "Image : " + resource);
}
});
}
private void storeImage(Bitmap image) {
File pictureFile = getOutputMediaFile();
if (pictureFile == null) {
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
image.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.close();
Toast.makeText(context, "Image Downloaded", Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
}
private File getOutputMediaFile() {
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/Christmas"); /*getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/Christmas/c");*/
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs())
return null;
}
File mediaFile;
mediaFile = new File(mediaStorageDir.getPath() + File.separator + "IMG_MERRY_CHRISTMAS.jpg");
return mediaFile;
}
}
从此代码中，我可以下载常规图像，但不适用于GIF。 GIF图片已下载，并且保持不变
答案 0 :(得分：0)
Glide可以获取File，与我一起工作：
Glide.with(context).asFile()
.load(url)
.apply(new RequestOptions()
.diskCacheStrategyOf(DiskCacheStrategy.ALL)
.format(DecodeFormat.PREFER_ARGB_8888)
.override(Target.SIZE_ORIGINAL))
.into(new SimpleTarget<File>() {
@Override
public void onResourceReady(@NonNull File resource, @Nullable Transition<? super File> transition) {
progressDailog.dismiss();
storeImage(resource);
//Log.d(TAG, "Image : " + resource);
}
});
答案 1 :(得分：0)
要使用Glide获取GIF：
Glide.with(MainActivity.this).asFile()
.load(url)
.apply(new RequestOptions()
.format(DecodeFormat.PREFER_ARGB_8888)
.override(Target.SIZE_ORIGINAL))
.into(new Target<File>() {
@Override
public void onStart() {
}
@Override
public void onStop() {
}
@Override
public void onDestroy() {
}
@Override
public void onLoadStarted(@Nullable Drawable placeholder) {
}
@Override
public void onLoadFailed(@Nullable Drawable errorDrawable) {
}
@Override
public void onResourceReady(@NonNull File resource, @Nullable Transition<? super File> transition) {
storeImage(resource);
}
@Override
public void onLoadCleared(@Nullable Drawable placeholder) {
}
@Override
public void getSize(@NonNull SizeReadyCallback cb) {
}
@Override
public void removeCallback(@NonNull SizeReadyCallback cb) {
}
@Override
public void setRequest(@Nullable Request request) {
}
@Nullable
@Override
public Request getRequest() {
return null;
}
});
用于保存图像：
private void storeImage(File image) {
File pictureFile = getOutputMediaFile();
if (pictureFile == null) {
return;
}
try {
FileOutputStream output = new FileOutputStream(pictureFile);
FileInputStream input = new FileInputStream(image);
FileChannel inputChannel = input.getChannel();
FileChannel outputChannel = output.getChannel();
inputChannel.transferTo(0, inputChannel.size(), outputChannel);
output.close();
input.close();
Toast.makeText(MainActivity.this, "Image Downloaded", Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private File getOutputMediaFile() {
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/Christmas"); /*getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/Christmas/c");*/
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs())
return null;
}
File mediaFile;
mediaFile = new File(mediaStorageDir.getPath() + File.separator + "IMG_MERRY_CHRISTMAS_"+Calendar.getInstance().getTimeInMillis() +".gif");
return mediaFile;
}
答案 2 :(得分：0)
此代码段将帮助您使用GLIDE下载gif
def f = new File('C:\\GroovyTEst.txt')
def records = f.readLines()
testRunner.testCase.testSuite.project.setPropertyValue("VendorRideid",records[0]) // here the value should be dynamic so that i can read one by one values from the text file
def tCase = testRunner.testCase.testSuite.testCases["ChangeRidestatus-accepted"]
def tStep = tCase.testSteps["Pending"]
tStep.run(testRunner, context)
def tStep1 = tCase.testSteps["Change RideStatus - Accepted"]
tStep1.run(testRunner, context)
createName函数
Glide.with(context)
.download(url)
.listener(new RequestListener<File>() {
@Override
public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<File> target, boolean isFirstResource) {
progressDailog.dismiss();
Toast.makeText(context, "Error saving", Toast.LENGTH_SHORT).show();
return false;
}
@Override
public boolean onResourceReady(File resource, Object model, Target<File> target, DataSource dataSource, boolean isFirstResource) {
progressDailog.dismiss();
try {
saveGifImage(context, getBytesFromFile(resource), createName(url));
} catch (IOException e) {
e.printStackTrace();
}
return true;
}
}).submit();
getBytesFromFile函数
public String createName(String url) {
String name = url.substring( url.lastIndexOf('/')+1, url.length());
String NoExt = name.substring(0, name.lastIndexOf('.'));
if(!ext.equals(".gif")){
name = NoExt + ".jpg";
}
return name;
}
saveGifImage函数
public byte[] getBytesFromFile(File file) throws IOException {
long length = file.length();
if (length > Integer.MAX_VALUE) {
throw new IOException("File is too large!");
}
byte[] bytes = new byte[(int) length];
int offset = 0;
int numRead = 0;
InputStream is = new FileInputStream(file);
try {
while (offset < bytes.length
&& (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
offset += numRead;
}
} finally {
is.close();
}
if (offset < bytes.length) {
throw new IOException("Could not completely read file " + file.getName());
}
return bytes;
}