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import android.app.Activity;
import android.os.Bundle;

import com.felipecsl.gifimageview.library.GifImageView;

import java.io.IOException;
import java.io.InputStream;

public class PlayActivity extends Activity{

    GifImageView gifView;
    //byte[] bytes;

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_play_activity);

        try {
            InputStream is = getAssets().open("rain_4.gif");
            byte[] bytes = new byte[is.available()];
            is.read(bytes);
            is.close();

            gifView = (GifImageView) findViewById(R.id.gifImageView);
            gifView = new GifImageView(this);
            gifView.setBytes(bytes);
            gifView.startAnimation();
        } catch (IOException e) {
            e.printstacktrace();
        }
    }

    @Override
    protected void onStart() {
        super.onStart();
        if(gifView != null) gifView.startAnimation();
    }

    @Override
    protected void onStop() {
        super.onStop();
        if(gifView != null) gifView.startAnimation();
    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context=".PlayActivity">

    <com.felipecsl.gifimageview.library.GifImageView
        android:id="@+id/gifImageView"
        android:layout_gravity="center"
        android:scaleType="fitCenter"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

解决方法

GifImageView gifImageView = (GifImageView) findViewById(R.id.gifImageView);

new GifDataDownloader() {
    @Override
    protected void onPostExecute(final byte[] bytes) {
        gifImageView.setBytes(bytes);
        gifImageView.startAnimation();
        Log.d(TAG,"GIF width is " + gifImageView.getGifWidth());
        Log.d(TAG,"GIF height is " + gifImageView.getGifheight());
    }
}.execute("http://gifs.joelglovier.com/aha/aha.gif");

ImageView imageView = (ImageView) findViewById(R.id.imageView);
Ion.with(imageView).load("http://gifs.joelglovier.com/aha/aha.gif");

package net.loonggg.gif.view; 
 
import net.loonggg.gif.R; 
import android.annotation.SuppressLint; 
import android.content.Context; 
import android.content.res.TypedArray; 
import android.graphics.Canvas; 
import android.graphics.Movie; 
import android.os.Build; 
import android.util.AttributeSet; 
import android.view.View; 
 
public class GifView extends View { 
 
  /** 
   * 默认为1秒 
   */ 
  private static final int DEFAULT_MOVIE_DURATION = 1000; 
 
  private int mMovieResourceId; 
 
  private Movie mMovie; 
 
  private long mMovieStart; 
 
  private int mCurrentAnimationTime = 0; 
 
  private float mLeft; 
 
  private float mTop; 
 
  private float mScale; 
 
  private int mMeasuredMovieWidth; 
 
  private int mMeasuredMovieHeight; 
 
  private boolean mVisible = true; 
 
  private volatile boolean mPaused = false; 
 
  public GifView(Context context) { 
    this(context,null); 
  } 
 
  public GifView(Context context,AttributeSet attrs) { 
    this(context,attrs,R.styleable.CustomTheme_gifViewStyle); 
  } 
 
  public GifView(Context context,AttributeSet attrs,int defStyle) { 
    super(context,defStyle); 
    setViewAttributes(context,defStyle); 
  } 
 
  @SuppressLint("NewApi") 
  private void setViewAttributes(Context context,int defStyle) { 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
      setLayerType(View.LAYER_TYPE_SOFTWARE,null); 
    } 
    // 从描述文件中读出gif的值，创建出Movie实例 
    final TypedArray array = context.obtainStyledAttributes(attrs,R.styleable.GifView,defStyle,R.style.Widget_GifView); 
    mMovieResourceId = array.getResourceId(R.styleable.GifView_gif,-1); 
    mPaused = array.getBoolean(R.styleable.GifView_paused,false); 
    array.recycle(); 
    if (mMovieResourceId != -1) { 
      mMovie = Movie.decodeStream(getResources().openRawResource( 
          mMovieResourceId)); 
    } 
  } 
 
  /** 
   * 设置gif图资源 
   * 
   * @param movieResId 
   */ 
  public void setMovieResource(int movieResId) { 
    this.mMovieResourceId = movieResId; 
    mMovie = Movie.decodeStream(getResources().openRawResource( 
        mMovieResourceId)); 
    requestLayout(); 
  } 
 
  public void setMovie(Movie movie) { 
    this.mMovie = movie; 
    requestLayout(); 
  } 
 
  public Movie getMovie() { 
    return mMovie; 
  } 
 
  public void setMovieTime(int time) { 
    mCurrentAnimationTime = time; 
    invalidate(); 
  } 
 
  /** 
   * 设置暂停 
   * 
   * @param paused 
   */ 
  public void setPaused(boolean paused) { 
    this.mPaused = paused; 
    if (!paused) { 
      mMovieStart = android.os.SystemClock.uptimeMillis() 
          - mCurrentAnimationTime; 
    } 
    invalidate(); 
  } 
 
  /** 
   * 判断gif图是否停止了 
   * 
   * @return 
   */ 
  public boolean isPaused() { 
    return this.mPaused; 
  } 
 
  @Override 
  protected void onMeasure(int widthMeasureSpec,int heightMeasureSpec) { 
    if (mMovie != null) { 
      int movieWidth = mMovie.width(); 
      int movieHeight = mMovie.height(); 
      int maximumWidth = MeasureSpec.getSize(widthMeasureSpec); 
      float scaleW = (float) movieWidth / (float) maximumWidth; 
      mScale = 1f / scaleW; 
      mMeasuredMovieWidth = maximumWidth; 
      mMeasuredMovieHeight = (int) (movieHeight * mScale); 
      setMeasuredDimension(mMeasuredMovieWidth,mMeasuredMovieHeight); 
    } else { 
      setMeasuredDimension(getSuggestedMinimumWidth(),getSuggestedMinimumHeight()); 
    } 
  } 
 
  @Override 
  protected void onLayout(boolean changed,int l,int t,int r,int b) { 
    super.onLayout(changed,l,t,r,b); 
    mLeft = (getWidth() - mMeasuredMovieWidth) / 2f; 
    mTop = (getHeight() - mMeasuredMovieHeight) / 2f; 
    mVisible = getVisibility() == View.VISIBLE; 
  } 
 
  @Override 
  protected void onDraw(Canvas canvas) { 
    if (mMovie != null) { 
      if (!mPaused) { 
        updateAnimationTime(); 
        drawMovieFrame(canvas); 
        invalidateView(); 
      } else { 
        drawMovieFrame(canvas); 
      } 
    } 
  } 
 
  @SuppressLint("NewApi") 
  private void invalidateView() { 
    if (mVisible) { 
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { 
        postInvalidateOnAnimation(); 
      } else { 
        invalidate(); 
      } 
    } 
  } 
 
  private void updateAnimationTime() { 
    long Now = android.os.SystemClock.uptimeMillis(); 
    // 如果第一帧，记录起始时间 
    if (mMovieStart == 0) { 
      mMovieStart = Now; 
    } 
    // 取出动画的时长 
    int dur = mMovie.duration(); 
    if (dur == 0) { 
      dur = DEFAULT_MOVIE_DURATION; 
    } 
    // 算出需要显示第几帧 
    mCurrentAnimationTime = (int) ((Now - mMovieStart) % dur); 
  } 
 
  private void drawMovieFrame(Canvas canvas) { 
    // 设置要显示的帧，绘制即可 
    mMovie.setTime(mCurrentAnimationTime); 
    canvas.save(Canvas.MATRIX_SAVE_FLAG); 
    canvas.scale(mScale,mScale); 
    mMovie.draw(canvas,mLeft / mScale,mTop / mScale); 
    canvas.restore(); 
  } 
 
  @SuppressLint("NewApi") 
  @Override 
  public void onScreenStateChanged(int screenState) { 
    super.onScreenStateChanged(screenState); 
    mVisible = screenState == SCREEN_STATE_ON; 
    invalidateView(); 
  } 
 
  @SuppressLint("NewApi") 
  @Override 
  protected void onVisibilityChanged(View changedView,int visibility) { 
    super.onVisibilityChanged(changedView,visibility); 
    mVisible = visibility == View.VISIBLE; 
    invalidateView(); 
  } 
 
  @Override 
  protected void onWindowVisibilityChanged(int visibility) { 
    super.onWindowVisibilityChanged(visibility); 
    mVisible = visibility == View.VISIBLE; 
    invalidateView(); 
  } 
 
} 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:orientation="vertical" > 
 
  <net.loonggg.gif.view.GifView 
    android:id="@+id/gif1" 
    android:layout_width="100dp" 
    android:layout_height="100dp" 
    android:layout_gravity="center_horizontal" 
    android:enabled="false" /> 
 
  <net.loonggg.gif.view.GifView 
    android:id="@+id/gif2" 
    android:layout_width="200dp" 
    android:layout_height="200dp" 
    android:layout_gravity="center_horizontal" 
    android:enabled="false" /> 
 
</LinearLayout> 

package net.loonggg.gif; 
 
import net.loonggg.gif.view.GifView; 
import android.app.Activity; 
import android.os.Bundle; 
 
public class Gif extends Activity { 
  private GifView gif1,gif2; 
 
  @Override 
  public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    gif1 = (GifView) findViewById(R.id.gif1); 
    // 设置背景gif图片资源 
    gif1.setMovieResource(R.raw.kitty); 
    gif2 = (GifView) findViewById(R.id.gif2); 
    gif2.setMovieResource(R.raw.b); 
    // 设置暂停 
    // gif2.setPaused(true); 
 
  } 
 
} 

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
 
  <declare-styleable name="GifView"> 
    <attr name="gif" format="reference" /> 
    <attr name="paused" format="boolean" /> 
  </declare-styleable> 
  <declare-styleable name="CustomTheme"> 
    <attr name="gifViewStyle" format="reference" /> 
  </declare-styleable> 
 
</resources>