图片下载框架Glide ：
1.权限（联网权限）
改变图片格式声明：
2.引入依赖 ：com.github.bumptech.glide:glide:3.7.0
代码：
可以当做工具类（旋转动画代码）
public class RotateAnimation implements ViewPropertyAnimation.Animator{
private int repeatCount;
private int duration;
private int startAngle;
private int endAngle;
public RotateAnimation(int repeatCount, int endAngle, int startAngle, int duration) {
this.repeatCount = repeatCount;
this.endAngle = endAngle;
this.startAngle = startAngle;
this.duration = duration;
}
@Override
public void animate(View view) {
ObjectAnimator animator = ObjectAnimator.ofFloat(view, "rotation", startAngle, endAngle);
animator.setDuration(duration);
animator.setRepeatCount(repeatCount);
animator.setInterpolator(new LinearInterpolator());
animator.start();
}
}
可以当做工具类（裁剪成圆形图片代码）
public class GlideCircleTransform extends BitmapTransformation {
public GlideCircleTransform(Context context) {
super(context);
}
@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
return circleCrop(pool, toTransform);
}
private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
if (source == null) return null;
int size = Math.min(source.getWidth(), source.getHeight());
int x = (source.getWidth() - size) / 2;
int y = (source.getHeight() - size) / 2;
// TODO this could be acquired from the pool too
Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);
Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
float r = size / 2f;
canvas.drawCircle(r, r, r, paint);
return result;
}
@Override public String getId() {
return getClass().getName();
}
}
可以当做工具类（制作成圆角矩形图片代码）
public class GlideRoundTransform extends BitmapTransformation {
private static float radius = 0f;
public GlideRoundTransform(Context context) {
this(context, 4); // 圆角矩形的半径4
}
public GlideRoundTransform(Context context, int radiusDp) {
super(context);
this.radius = Resources.getSystem().getDisplayMetrics().density * radiusDp;
}
@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
return roundCrop(pool, toTransform);
}
private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {
if (source == null) return null;
Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
canvas.drawRoundRect(rectF, radius, radius, paint);
return result;
}
@Override public String getId() {
return getClass().getName() + Math.round(radius);
}
}
public class MainActivity extends AppCompatActivity {
private ImageView iv1;
private Button iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iv1 = ((ImageView) findViewById(R.id.iv1));
iv = ((Button) findViewById(R.id.iv));
intoData();
}
private void intoData() {
iv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url="http://img1.imgtn.bdimg.com/it/u=2705169360,4047174077&fm=23&gp=0.jpg";
// String url = "http://images.17173.com/2014/news/2014/12/15/2014cpb1215gif04.gif";
Glide.with(getBaseContext())
.load(Uri.parse(url))
//配置缓存
.skipMemoryCache(true)
//设置图片加载之前的占位符
.placeholder(R.mipmap.ic_launcher)
//设置图片加载错误的占位符
.error(R.mipmap.error_i)
//淡入淡出
.crossFade(3000)
//显示风格
.centerCrop()
//动画
.animate(new RotateAnimation(ValueAnimator.INFINITE,360,0,5000))
//变形
.transform(new GlideCircleTransform(getBaseContext()))
// .transform(getCricleBitmapTransformation())
// .transform(getRoundBitmapTransformation())
.into(iv1);
}
/* @NonNull
private BitmapTransformation getCricleBitmapTransformation() {
return new BitmapTransformation(getBaseContext()) {
@Override
protected Bitmap transform(BitmapPool pool, Bitmap source, int outWidth, int outHeight) {
//得到正方形的边长
int min = Math.min(source.getHeight(), source.getWidth());
//在原图上截取正方形图片（将来裁剪该正方形的图片，得到圆形图片）
Bitmap squareBitmap = Bitmap.createBitmap(source, 0, 0, min, min);
//创造与正方形图片等尺寸的空白图片（目的是基于该空白图片，目的是得到等尺寸的空白画布，目的是在该画布上绘制圆形裁剪区域）
Bitmap bitmap = Bitmap.createBitmap(min,min, Bitmap.Config.ARGB_8888);
//创建画笔画布
Paint paint=new Paint();
paint.setAntiAlias(true);
Canvas canvas=new Canvas(bitmap);
//将正方形图片的内容复制到空白图片并绘制裁剪区域
Shader shader = paint.setShader(new BitmapShader(squareBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
canvas.drawCircle(min/2,min/2,min/2,paint);
// //返回加工后的空白图片
return bitmap;
}
@Override
public String getId() {
return getClass().getSimpleName();
}
};
}*/
});
}
/* @NonNull
private BitmapTransformation getRoundBitmapTransformation() {
return new BitmapTransformation(getBaseContext()) {
@Override
protected Bitmap transform(BitmapPool pool, Bitmap source, int outWidth, int outHeight) {
if (source == null) return null;
int radius=30;
Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
canvas.drawRoundRect(rectF, radius, radius, paint);
return result;
}
@Override
public String getId() {
return "yk";
}
};
}*/
public void aaa(View view) {
String url="http://img1.imgtn.bdimg.com/it/u=2705169360,4047174077&fm=23&gp=0.jpg";
// String url = "http://images.17173.com/2014/news/2014/12/15/2014cpb1215gif04.gif";
Glide.with(getBaseContext())
.load(Uri.parse(url))
//配置缓存
.skipMemoryCache(true)
//设置图片加载之前的占位符
.placeholder(R.mipmap.ic_launcher)
//设置图片加载错误的占位符
.error(R.mipmap.error_i)
//淡入淡出
.crossFade(3000)
//显示风格
.centerCrop()
//动画
.animate(new RotateAnimation(ValueAnimator.INFINITE,360,0,5000))
//变形
// .transform(getCricleBitmapTransformation())
.transform(new GlideRoundTransform(getBaseContext()))
.into(iv1);
}
}
public class Yk implements GlideModule {
@Override
public void applyOptions(Context context, GlideBuilder builder) {
builder.setDecodeFormat(DecodeFormat.PREFER_ARGB_8888);
}
@Override
public void registerComponents(Context context, Glide glide) {
}
}
布局文件：
<?xml version="1.0" encoding="utf-8"?>
<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:orientation="vertical"
tools:context="com.example.glide_test.MainActivity">
<ImageView
android:id="@+id/iv1"
android:layout_weight="1"
android:layout_margin="50dp"
android:layout_width="match_parent"
android:layout_height="0dp"
/>
<Button
android:id="@+id/iv"
android:layout_width="match_parent"
android:text="加工成圆形图片"
android:layout_margin="10dp"
android:layout_height="wrap_content" />
<Button
android:onClick="aaa"
android:layout_width="match_parent"
android:text="加工成圆角图片"
android:layout_margin="10dp"
android:layout_height="wrap_content" />
</LinearLayout>
运行效果：
