我的布局有很多ImageViews。我想在一个ImageView中显示.gif动画文件。我尝试了Yash的方法 (在Android中的ImageView中添加gif图像)，但.gif文件显示在整个布局中，其他视图都消失了。
我想要全部显示。
有什么办法吗？
8个回答
17
如果您不想使用Glide，只需将以下内容添加到您的依赖项，并创建您独特的“gif”。在使用之前检查最新版本。ImageView：
implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.19'
使用最少的代码行高效运作。以下是一个例子：
<pl.droidsonroids.gif.GifImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/dancer"
android:src="@drawable/maddancer" />
- Taslim Oseni
10
使用第三方依赖。
将以下依赖项添加到您的应用gradle文件中。
1) GifAnimationDrawable.java
希望这能节省某人的时间，因为我很欣赏https://dev59.com/z2w15IYBdhLWcg3wkMjz#11736861，但我想在ImageView中显示它。
此外，如果链接不可用，你也可以从Github上找到这个类。如果你发现任何问题，请在评论中留言，我会尽力帮助 :) 编辑：2019年12月12日 另一种在自定义图片视图中加载GIF的方法是使用这个库library。
将以下依赖项添加到您的应用gradle文件中。
dependencies {
implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.17'
}
然后同步您的项目。当同步完成后，转到您的布局文件并添加以下代码。<pl.droidsonroids.gif.GifImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/gif_file"/>
这是将.gif图像显示到ImageView中最简单的方法，您可以像处理常规Android ImageView引用从这个答案那样处理。
另一种在没有添加任何依赖项到app gradle文件的情况下将.gif显示到imageview的方法。
将您的.gif文件放入res/raw文件夹中，在您的片段或活动中，然后您可以像这样在imageview中设置gif。
GifAnimationDrawable gif;
try {
gif = new
GifAnimationDrawable(getResources().openRawResource(R.raw.download));
gif.setOneShot(false);
} catch (NotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
ivGif.setImageDrawable(gif);
gif.setVisible(true, true);
}
1) GifAnimationDrawable.java
public class GifAnimationDrawable extends AnimationDrawable
{
private boolean decoded;
private GifDecoder mGifDecoder;
private Bitmap mTmpBitmap;
private int height, width;
public GifAnimationDrawable(File f) throws IOException
{
this(f, false);
}
public GifAnimationDrawable(InputStream is) throws IOException
{
this(is, false);
}
public GifAnimationDrawable(File f, boolean inline) throws IOException
{
this(new BufferedInputStream(new FileInputStream(f), 32768), inline);
}
public GifAnimationDrawable(InputStream is, boolean inline) throws IOException
{
super();
InputStream bis = is;
if(!BufferedInputStream.class.isInstance(bis)) bis = new BufferedInputStream(is, 32768);
decoded = false;
mGifDecoder = new GifDecoder();
mGifDecoder.read(bis);
mTmpBitmap = mGifDecoder.getFrame(0);
android.util.Log.v("GifAnimationDrawable", "===>Lead frame: ["+width+"x"+height+"; "+mGifDecoder.getDelay(0)+";"+mGifDecoder.getLoopCount()+"]");
height = mTmpBitmap.getHeight();
width = mTmpBitmap.getWidth();
addFrame(new BitmapDrawable(mTmpBitmap), mGifDecoder.getDelay(0));
setOneShot(mGifDecoder.getLoopCount() != 0);
setVisible(true, true);
if(inline){
loader.run();
}else{
new Thread(loader).start();
}
}
public boolean isDecoded(){ return decoded; }
private Runnable loader = new Runnable(){
public void run()
{
mGifDecoder.complete();
int i, n = mGifDecoder.getFrameCount(), t;
for(i=1;i<n;i++){
mTmpBitmap = mGifDecoder.getFrame(i);
t = mGifDecoder.getDelay(i);
android.util.Log.v("GifAnimationDrawable", "===>Frame "+i+": "+t+"]");
addFrame(new BitmapDrawable(mTmpBitmap), t);
}
decoded = true;
mGifDecoder = null;
}
};
public int getMinimumHeight(){ return height; }
public int getMinimumWidth(){ return width; }
public int getIntrinsicHeight(){ return height; }
public int getIntrinsicWidth(){ return width; }
}
GifDecoder.java
public class GifDecoder
{
public static final int STATUS_OK = 0; public static final int STATUS_FORMAT_ERROR = 1; public static final int STATUS_OPEN_ERROR = 2; protected static final int MAX_STACK_SIZE = 4096; public static final int MIN_DELAY = 100; public static final int MIN_DELAY_ENFORCE_THRESHOLD = 20; protected InputStream in; protected int status; protected int width; // full image width protected int height; // full image height protected boolean gctFlag; // global color table used protected int gctSize; // size of global color table protected int loopCount = 1; // iterations; 0 = repeat forever protected int[] gct; // global color table protected int[] lct; // local color table protected int[] act; // active color table protected int bgIndex; // background color index protected int bgColor; // background color protected int lastBgColor; // previous bg color protected int pixelAspect; // pixel aspect ratio protected boolean lctFlag; // local color table flag protected boolean interlace; // interlace flag protected int lctSize; // local color table size protected int ix, iy, iw, ih; // current image rectangle protected int lrx, lry, lrw, lrh; protected Bitmap image; // current frame protected Bitmap lastBitmap; // previous frame protected byte[] block = new byte[256]; // current data block protected int blockSize = 0; // block size last graphic control extension info protected int dispose = 0; // 0=no action; 1=leave in place; 2=restore to bg; 3=restore to prev protected int lastDispose = 0; protected boolean transparency = false; // use transparent color protected int delay = 0; // delay in milliseconds protected int transIndex; // transparent color index // LZW decoder working arrays protected short[] prefix; protected byte[] suffix; protected byte[] pixelStack; protected byte[] pixels; protected Vector<GifFrame> frames; // frames read from current file protected int frameCount; private boolean readComplete; public GifDecoder() { readComplete = false; } private static class GifFrame { public GifFrame(Bitmap im, int del) { image = im; delay = del; } public Bitmap image; public int delay; } /** * Gets display duration for specified frame. * * @param n * int index of frame * @return delay in milliseconds */ public int getDelay(int n) { delay = -1; if ((n >= 0) && (n < frameCount)) { delay = frames.elementAt(n).delay; //meets browser compatibility standards if (delay < MIN_DELAY_ENFORCE_THRESHOLD) delay = MIN_DELAY; } return delay; } /** * Gets the number of frames read from file. * * @return frame count */ public int getFrameCount() { return frameCount; } /** * Gets the first (or only) image read. * * @return BufferedBitmap containing first frame, or null if none. */ public Bitmap getBitmap() { return getFrame(0); } /** * Gets the "Netscape" iteration count, if any. A count of 0 means repeat indefinitiely. * * @return iteration count if one was specified, else 1. */ public int getLoopCount() { return loopCount; } /** * Creates new frame image from current data (and previous frames as specified by their disposition codes). */ protected void setPixels() { // expose destination image's pixels as int array int[] dest = new int[width * height]; // fill in starting image contents based on last image's dispose code if (lastDispose > 0) { if (lastDispose == 3) { // use image before last int n = frameCount - 2; if (n > 0) { lastBitmap = getFrame(n - 1); } else { lastBitmap = null; } } if (lastBitmap != null) { lastBitmap.getPixels(dest, 0, width, 0, 0, width, height); // copy pixels if (lastDispose == 2) { // fill last image rect area with background color int c = 0; if (!transparency) { c = lastBgColor; } for (int i = 0; i < lrh; i++) { int n1 = (lry + i) * width + lrx; int n2 = n1 + lrw; for (int k = n1; k < n2; k++) { dest[k] = c; } } } } } // copy each source line to the appropriate place in the destination int pass = 1; int inc = 8; int iline = 0; for (int i = 0; i < ih; i++) { int line = i; if (interlace) { if (iline >= ih) { pass++; switch (pass) { case 2: iline = 4; break; case 3: iline = 2; inc = 4; break; case 4: iline = 1; inc = 2; break; default: break; } } line = iline; iline += inc; } line += iy; if (line < height) { int k = line * width; int dx = k + ix; // start of line in dest int dlim = dx + iw; // end of dest line if ((k + width) < dlim) { dlim = k + width; // past dest edge } int sx = i * iw; // start of line in source while (dx < dlim) { // map color and insert in destination int index = ((int) pixels[sx++]) & 0xff; int c = act[index]; if (c != 0) { dest[dx] = c; } dx++; } } } image = Bitmap.createBitmap(dest, width, height, Config.ARGB_4444); } /** * Gets the image contents of frame n. * * @return BufferedBitmap representation of frame, or null if n is invalid. */ public Bitmap getFrame(int n) { if (frameCount <= 0) return null; n = n % frameCount; return ((GifFrame) frames.elementAt(n)).image; } /** * Reads GIF image from stream * * @param is * containing GIF file. * @return read status code (0 = no errors) */ public int read(InputStream is) { init(); if (is != null) { in = is; readHeader(); if (!err()) { readContents(); if (frameCount < 0) { status = STATUS_FORMAT_ERROR; } } } else { status = STATUS_OPEN_ERROR; } readComplete = true; return status; } public void complete() { readContents(); try { in.close(); } catch (Exception e) { } } /** * Decodes LZW image data into pixel array. Adapted from John Cristy's BitmapMagick. */ protected void decodeBitmapData() { int nullCode = -1; int npix = iw * ih; int available, clear, code_mask, code_size, end_of_information, in_code, old_code, bits, code, count, i, datum, data_size, first, top, bi, pi; if ((pixels == null) || (pixels.length < npix)) { pixels = new byte[npix]; // allocate new pixel array } if (prefix == null) { prefix = new short[MAX_STACK_SIZE]; } if (suffix == null) { suffix = new byte[MAX_STACK_SIZE]; } if (pixelStack == null) { pixelStack = new byte[MAX_STACK_SIZE + 1]; } // Initialize GIF data stream decoder. data_size = read(); clear = 1 << data_size; end_of_information = clear + 1; available = clear + 2; old_code = nullCode; code_size = data_size + 1; code_mask = (1 << code_size) - 1; for (code = 0; code < clear; code++) { prefix[code] = 0; // XXX ArrayIndexOutOfBoundsException suffix[code] = (byte) code; } // Decode GIF pixel stream. datum = bits = count = first = top = pi = bi = 0; for (i = 0; i < npix;) { if (top == 0) { if (bits < code_size) { // Load bytes until there are enough bits for a code. if (count == 0) { // Read a new data block. count = readBlock(); if (count <= 0) { break; } bi = 0; } datum += (((int) block[bi]) & 0xff) << bits; bits += 8; bi++; count--; continue; } // Get the next code. code = datum & code_mask; datum >>= code_size; bits -= code_size; // Interpret the code if ((code > available) || (code == end_of_information)) { break; } if (code == clear) { // Reset decoder. code_size = data_size + 1; code_mask = (1 << code_size) - 1; available = clear + 2; old_code = nullCode; continue; } if (old_code == nullCode) { pixelStack[top++] = suffix[code]; old_code = code; first = code; continue; } in_code = code; if (code == available) { pixelStack[top++] = (byte) first; code = old_code; } while (code > clear) { pixelStack[top++] = suffix[code]; code = prefix[code]; } first = ((int) suffix[code]) & 0xff; // Add a new string to the string table, if (available >= MAX_STACK_SIZE) { break; } pixelStack[top++] = (byte) first; prefix[available] = (short) old_code; suffix[available] = (byte) first; available++; if (((available & code_mask) == 0) && (available < MAX_STACK_SIZE)) { code_size++; code_mask += available; } old_code = in_code; } // Pop a pixel off the pixel stack. top--; pixels[pi++] = pixelStack[top]; i++; } for (i = pi; i < npix; i++) { pixels[i] = 0; // clear missing pixels } } /** * Returns true if an error was encountered during reading/decoding */ protected boolean err() { return status != STATUS_OK; } /** * Initializes or re-initializes reader */ protected void init() { status = STATUS_OK; frameCount = 0; frames = new Vector<GifFrame>(); gct = null; lct = null; } /** * Reads a single byte from the input stream. */ protected int read() { int curByte = 0; try { curByte = in.read(); } catch (Exception e) { status = STATUS_FORMAT_ERROR; } return curByte; } /** * Reads next variable length block from input. * * @return number of bytes stored in "buffer" */ protected int readBlock() { blockSize = read(); int n = 0; if (blockSize > 0) { try { int count = 0; while (n < blockSize) { count = in.read(block, n, blockSize - n); if (count == -1) { break; } n += count; } } catch (Exception e) { e.printStackTrace(); } if (n < blockSize) { status = STATUS_FORMAT_ERROR; } } return n; } /** * Reads color table as 256 RGB integer values * * @param ncolors * int number of colors to read * @return int array containing 256 colors (packed ARGB with full alpha) */ protected int[] readColorTable(int ncolors) { int nbytes = 3 * ncolors; int[] tab = null; byte[] c = new byte[nbytes]; int n = 0; try { n = in.read(c); } catch (Exception e) { e.printStackTrace(); } if (n < nbytes) { status = STATUS_FORMAT_ERROR; } else { tab = new int[256]; // max size to avoid bounds checks int i = 0; int j = 0; while (i < ncolors) { int r = ((int) c[j++]) & 0xff; int g = ((int) c[j++]) & 0xff; int b = ((int) c[j++]) & 0xff; tab[i++] = 0xff000000 | (r << 16) | (g << 8) | b; } } return tab; } /** * Main file parser. Reads GIF content blocks. */ protected void readContents() { // read GIF file content blocks boolean done = false; while (!(done || err())) { int code = read(); switch (code) { case 0x2C: // image separator readBitmap(); if(!readComplete) return; break; case 0x21: // extension code = read(); switch (code) { case 0xf9: // graphics control extension readGraphicControlExt(); break; case 0xff: // application extension readBlock(); String app = ""; for (int i = 0; i < 11; i++) { app += (char) block[i]; } if (app.equals("NETSCAPE2.0")) { readNetscapeExt(); } else { skip(); // don't care } break; case 0xfe:// comment extension skip(); break; case 0x01:// plain text extension skip(); break; default: // uninteresting extension skip(); } break; case 0x3b: // terminator done = true; break; case 0x00: // bad byte, but keep going and see what happens break; default: status = STATUS_FORMAT_ERROR; } } } /** * Reads Graphics Control Extension values */ protected void readGraphicControlExt() { read(); // block size int packed = read(); // packed fields dispose = (packed & 0x1c) >> 2; // disposal method if (dispose == 0) { dispose = 1; // elect to keep old image if discretionary } transparency = (packed & 1) != 0; delay = readShort() * 10; // delay in milliseconds transIndex = read(); // transparent color index read(); // block terminator } /** * Reads GIF file header information. */ protected void readHeader() { String id = ""; for (int i = 0; i < 6; i++) { id += (char) read(); } if (!id.startsWith("GIF")) { status = STATUS_FORMAT_ERROR; return; } readLSD(); if (gctFlag && !err()) { gct = readColorTable(gctSize); bgColor = gct[bgIndex]; } } /** * Reads next frame image */ protected void readBitmap() { ix = readShort(); // (sub)image position & size iy = readShort(); iw = readShort(); ih = readShort(); int packed = read(); lctFlag = (packed & 0x80) != 0; // 1 - local color table flag interlace lctSize = (int) Math.pow(2, (packed & 0x07) + 1); // 3 - sort flag // 4-5 - reserved lctSize = 2 << (packed & 7); // 6-8 - local color // table size interlace = (packed & 0x40) != 0; if (lctFlag) { lct = readColorTable(lctSize); // read table act = lct; // make local table active } else { act = gct; // make global table active if (bgIndex == transIndex) { bgColor = 0; } } int save = 0; if (transparency) { save = act[transIndex]; act[transIndex] = 0; // set transparent color if specified } if (act == null) { status = STATUS_FORMAT_ERROR; // no color table defined } if (err()) { return; } decodeBitmapData(); // decode pixel data skip(); if (err()) { return; } frameCount++; // create new image to receive frame data image = Bitmap.createBitmap(width, height, Config.ARGB_4444); setPixels(); // transfer pixel data to image frames.addElement(new GifFrame(image, delay)); // add image to frame // list if (transparency) { act[transIndex] = save; } resetFrame(); } /** * Reads Logical Screen Descriptor */ protected void readLSD() { // logical screen size width = readShort(); height = readShort(); // packed fields int packed = read(); gctFlag = (packed & 0x80) != 0; // 1 : global color table flag // 2-4 : color resolution // 5 : gct sort flag gctSize = 2 << (packed & 7); // 6-8 : gct size bgIndex = read(); // background color index pixelAspect = read(); // pixel aspect ratio } /** * Reads Netscape extenstion to obtain iteration count */ protected void readNetscapeExt() { do { readBlock(); if (block[0] == 1) { // loop count sub-block int b1 = ((int) block[1]) & 0xff; int b2 = ((int) block[2]) & 0xff; loopCount = (b2 << 8) | b1; } } while ((blockSize > 0) && !err()); } /** * Reads next 16-bit value, LSB first */ protected int readShort() { // read 16-bit value, LSB first return read() | (read() << 8); } /** * Resets frame state for reading next image. */ protected void resetFrame() { lastDispose = dispose; lrx = ix; lry = iy; lrw = iw; lrh = ih; lastBitmap = image; lastBgColor = bgColor; dispose = 0; transparency = false; delay = 0; lct = null; } /** * Skips variable length blocks up to and including next zero length block. */ protected void skip() { do { readBlock(); } while ((blockSize > 0) && !err()); }}
希望这能节省某人的时间，因为我很欣赏https://dev59.com/z2w15IYBdhLWcg3wkMjz#11736861，但我想在ImageView中显示它。
此外，如果链接不可用，你也可以从Github上找到这个类。如果你发现任何问题，请在评论中留言，我会尽力帮助 :) 编辑：2019年12月12日 另一种在自定义图片视图中加载GIF的方法是使用这个库library。
- Ajay Pandya
5
6老兄，这个应该放在Github上，它的效果比Glide和Fresco都要好 - 我能得到你的许可来为此创建一个小的第三方库吗？ - Royi Benyossef
1@royiby 如果你已经创建了库，请分享链接。 - Sandeep Kaul
@Ajay Pandya，请问您能否分享一下那两个类的下载链接，由于 Dropbox 链接无法使用。 - Yograj Shinde
@Ajay GifAnimationDrawable文件不存在，请帮忙。 - curiousMind
请查看我回答中提供的链接。 - Ajay Pandya
5
Glide 是最好的解决方案。只需使用以下代码即可。
String gifUrl = "http://part/to/your/gifFile.gif";
Glide
.with( context )
.load( gifUrl )
.into( imageViewGif );
- Illya Bublyk
5
或者您可以简单地将WebView添加到您的xml中，并在webview中加载gif图像。 您不需要做任何其他操作。 图片将在webview内自动循环。
- Sujan Shrestha
5
在安卓设备中展示GIF图片的最佳和最简单的解决方案，如下：
- Open build.gradle (Module: app)
- put in dependencies: compile 'pl.droidsonroids.gif:android-gif-drawable:1.1.+'
Open layout folder and put this code where you want to display GIF image: e-g activity_main.xml
<pl.droidsonroids.gif.GifImageView android:layout_width="150dp" android:layout_height="wrap_content" android:src="@drawable/your_gif_file_name"/>android:src="@drawable/your_gif_file_name", Replace 'your_gif_file_name' with your desired gif image file
- Shujat Munawar
3
使用Glide(https://github.com/bumptech/glide)：
GlideDrawableImageViewTarget imageViewTarget = new GlideDrawableImageViewTarget(imageview);
Glide.with(this).load(R.raw.mygif).into(imageViewTarget);
- Nirav Sanghvi
网页内容由stack overflow 提供, 点击上面的可以查看英文原文，
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