前言:播放gif的版本有很多,我这边使用Android自带的Movie类播放gif动画,也是在别人的基础上进行修改.有同样需求的朋友可以参考我的demo.
1.效果图如下：
2.部分主要代码
MainActivity.java给封装的GifView设置背景的gif图片资源，绘制金币,同时开启金币屏幕掉下来的效果,监听gif播放完毕动画,结束掉金币的动画
public class MainActivity extends Activity implements OnClickListener {
private FlakeView flakeView;//金币掉落动画的主体动画
private GifView imageView;
private Button button_stop1;
private PopupWindow pop;
//---------------------------------------------------------------------------------------------
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button_stop1=(Button) findViewById(R.id.button_stop1);
imageView=(GifView) findViewById(R.id.imageView);
imageView.setMovieResource(R.raw.icon_thank_lord_longen); // 设置背景gif图片资源
flakeView = new FlakeView(this);
final LinearLayout container = (LinearLayout) findViewById(R.id.container);
container.addView(flakeView); //将flakeView 添加到布局中
flakeView.addFlakes(50);//设置同时出现在屏幕上的金币数量 建议64以内 过多会引起卡顿
/**
* 绘制的类型
* @see View.LAYER_TYPE_HARDWARE
* @see View.LAYER_TYPE_SOFTWARE
* @see View.LAYER_TYPE_NONE
*/
flakeView.setLayerType(View.LAYER_TYPE_NONE, null);
pop = new PopupWindow(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT);
pop.setOutsideTouchable(true);
pop.setFocusable(true);
pop.showAtLocation(container,Gravity.CENTER,0,0);
MediaPlayer player = MediaPlayer.create(this, R.raw.shake);
player.start();
imageView.setOnGifPlayListener(new GifPlayListener(){
@Override
public void playFinish(){
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
pop.dismiss();
container.removeAllViews();
Toast.makeText(MainActivity.this,"播放完成", 0).show();
}
}, 500);
}
});
button_stop1.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_stop1:
if (imageView.isPaused()) {
imageView.setPaused(false);
}else {
imageView.setPaused(true);
}
break;
}
}
}
GifView.java播放GIF动画的自定义视图
public class GifView extends View {
private static final int DEFAULT_MOVIE_DURATION = 1000;//默认为1秒
private GifPlayListener gifPlayListener;
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;
private int duration;
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, attrs, defStyle);
setViewAttributes(context, attrs, defStyle);
}
@SuppressLint("NewApi")
private void setViewAttributes(Context context, AttributeSet attrs,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*/0);
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));
duration = mMovie.duration();//取出动画的时长
if (duration == 0) {
duration = DEFAULT_MOVIE_DURATION;
}
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){
if(updateAnimationTime()){
drawMovieFrame(canvas);
invalidateView();
}else{
if(null!=gifPlayListener){
gifPlayListener.playFinish();
}
}
} else {
drawMovieFrame(canvas);
}
}
}
@SuppressLint("NewApi")
private void invalidateView() {
if (mVisible) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
postInvalidateOnAnimation();
} else {
invalidate();
}
}
}
private boolean updateAnimationTime() {
long now = android.os.SystemClock.uptimeMillis();
if (mMovieStart == 0) {// 如果第一帧，记录起始时间
mMovieStart = now;
}else if((now-mMovieStart)>=duration){//动画需要结束
return false;
}
// 算出需要显示第几帧
mCurrentAnimationTime = (int) ((now - mMovieStart) % duration);
return true;
}
private void drawMovieFrame(Canvas canvas) {
mMovie.setTime(mCurrentAnimationTime);// 设置要显示的帧，绘制即可
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();
}
public void setOnGifPlayListener(GifPlayListener gifPlayListener) {
this.gifPlayListener = gifPlayListener;
}
public interface GifPlayListener{
void playFinish();
}
}
Flake.java金币的实体类
public class Flake {
float x, y;
float rotation;
float speed;
float rotationSpeed;
int width,height;
Bitmap bitmap;
static HashMap<Integer, Bitmap> bitmapMap = new HashMap<Integer, Bitmap>();
static Flake createFlake(float xRange, Bitmap originalBitmap,Context Context) {
Flake flake = new Flake();
DisplayMetrics metrics = getDisplayMetrics(Context);
if (metrics.widthPixels >= 1080) {
flake.width = (int) (5 + (float) Math.random() * 80);
float hwRatio = originalBitmap.getHeight() / originalBitmap.getWidth();
flake.height = (int) (flake.width * hwRatio + 60);
} else {
flake.width = (int) (5 + (float) Math.random() * 50);
float hwRatio = originalBitmap.getHeight() / originalBitmap.getWidth();
flake.height = (int) (flake.width * hwRatio + 40);
}
flake.x = (float) Math.random() * (xRange - flake.width);
flake.y = 0 - (flake.height + (float) Math.random() * flake.height);
flake.speed = 50 + (float) Math.random() * 150;
flake.rotation = (float) Math.random() * 180 - 90;
flake.rotationSpeed = (float) Math.random() * 90 - 45;
flake.bitmap = bitmapMap.get(flake.width);
if (flake.bitmap == null) {
flake.bitmap = Bitmap.createScaledBitmap(originalBitmap,(int) flake.width, (int) flake.height, true);
bitmapMap.put(flake.width,flake.bitmap);
}
return flake;
}
/**
* 获取屏幕尺寸与密度.
* @param context the context
* @return mDisplayMetrics
*/
public static DisplayMetrics getDisplayMetrics(Context context) {
Resources mResources;
if (context == null) {
mResources = Resources.getSystem();
} else {
mResources = context.getResources();
}
//DisplayMetrics{density=1.5, width=480, height=854, scaledDensity=1.5, xdpi=160.421, ydpi=159.497}
//DisplayMetrics{density=2.0, width=720, height=1280, scaledDensity=2.0, xdpi=160.42105, ydpi=160.15764}
DisplayMetrics mDisplayMetrics = mResources.getDisplayMetrics();
return mDisplayMetrics;
}
}
activity_main.xml布局文件
<FrameLayout 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">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.xx.gifdemo.GifView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:enabled="false"
android:hardwareAccelerated="false" />
<Button
android:id="@+id/button_stop1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="停止/继续"/>
</RelativeLayout>
<LinearLayout
android:id="@+id/container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"/>
</FrameLayout>
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