这篇文章主要介绍了Android如何将Glide动态加载不同大小的图片切圆角与圆形,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
Glide加载动态图片
首先我们先要去依赖一个githup:bumptech:glide:glide:3.7.0包;
使用Glide结合列表的样式进行图片加载:
1) 如果使用的是ListView,可以直接在Adapter的getView方法中使用:
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (null == convertView) {
//.....
}
Glide
.with(context)
.load(imageUrls[position])
.into(holder.imageView);
return convertView;
}
2) 如果使用的是RecyclerView,可以在Adapter的onBindViewHolder方法中使用:
@Override
public void onBindViewHolder(RVViewHolder holder, int position) {
Glide.with(MainActivity.this)
.load(args[position])
.into(holder.imageView);
}
3) 当加载网络图片时,由于加载过程中图片未能及时显示,此时可能需要设置等待时的图片,通过placeHolder()方法:
Glide
.with(context)
.load(UsageExampleListViewAdapter.eatFoodyImages[0])
.placeholder(R.mipmap.ic_launcher) // can also be a drawable
.into(imageViewPlaceholder);
4) 当加载图片失败时,通过error(Drawable drawable)方法设置加载失败后的图片显示:
Glide
.with(context)
.load("https://cache.yisu.com/upload/information/20200623/125/125610.png")
.error(R.mipmap.future_studio_launcher) // will be displayed if the image cannot be loaded
.into(imageViewError);
5) 图片的缩放,centerCrop()和fitCenter():
//使用centerCrop是利用图片图填充ImageView设置的大小,如果ImageView的
//Height是match_parent则图片就会被拉伸填充
Glide.with(MainActivity.this)
.load(args[position])
.centerCrop()
.into(holder.imageView);
//使用fitCenter即缩放图像让图像都测量出来等于或小于 ImageView 的边界范围
//该图像将会完全显示,但可能不会填满整个 ImageView。
Glide.with(MainActivity.this)
.load(args[position])
.fitCenter()
.into(holder.imageView);
6) 显示gif动画:
Glide
.with( context )
.load( gifUrl )
.asGif() //判断加载的url资源是否为gif格式的资源
.error( R.drawable.full_cake )
.into( imageViewGif );
7) 显示本地视频
String filePath = "/storage/emulated/0/Pictures/example_video.mp4";
Glide
.with( context )
.load( Uri.fromFile( new File( filePath ) ) )
.into( imageViewGifAsBitmap );
8) 缓存策略:
Glide
.with( context )
.load( Images[0] )
.skipMemoryCache( true ) //跳过内存缓存
.into( imageViewInternet );
Glide
.with( context )
.load( images[0] )
.diskCacheStrategy( DiskCacheStrategy.NONE ) //跳过硬盘缓存
.into( imageViewInternet );
DiskCacheStrategy.NONE 什么都不缓存
DiskCacheStrategy.SOURCE 仅仅只缓存原来的全分辨率的图像
DiskCacheStrategy.RESULT 仅仅缓存最终的图像,即降低分辨率后的(或者是转换后的)
DiskCacheStrategy.ALL 缓存所有版本的图像(默认行为)
9) 优先级,设置图片加载的顺序:
Priority.LOW
Priority.NORMAL
Priority.HIGH
Priority.IMMEDIATE
private void loadImageWithHighPriority() {
Glide
.with( context )
.load( mages[0] )
.priority( Priority.HIGH )
.into( imageViewHero );
}
private void loadImagesWithLowPriority() {
Glide
.with( context )
.load( images[1] )
.priority( Priority.LOW )
.into( imageViewLowPrioLeft );
Glide
.with( context )
.load( images[2] )
.priority( Priority.LOW )
.into( imageViewLowPrioRight );
}
10) 当不需要将加载的资源直接放入到ImageView中而是想获取资源的Bitmap对象:
//括号中的300,600代表宽和高但是未有作用
SimpleTarget target = new SimpleTarget<Bitmap>(300,600) {
@Override
public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
holder.imageView.setImageBitmap(resource);
}
};
Glide.with(MainActivity.this)
.load(args[position])
.asBitmap()
.into(target);
11) 集成网络栈(okHttp,Volley):
dependencies {
// your other dependencies
// ...
// Glide
compile 'com.github.bumptech.glide:glide:3.6.1'
// Glide's OkHttp Integration
compile 'com.github.bumptech.glide:okhttp-integration:1.3.1@aar'
compile 'com.squareup.okhttp:okhttp:2.5.0'
}
dependencies {
// your other dependencies
// ...
// Glide
compile 'com.github.bumptech.glide:glide:3.6.1'
// Glide's Volley Integration
compile 'com.github.bumptech.glide:volley-integration:1.3.1@aar'
compile 'com.mcxiaoke.volley:library:1.0.8'
}
好了,以上就是Glide动态加载图片的方法,下面开始本文的正文:
需求
Glide下载图片并切圆角或圆形,但图片有大有小,图片不能改变,切圆还好说,但是切圆角就会发现图片小的会比图片大的要圆
搜一下 " Glide动态加载圆形图片跟圆角图片 " 就会出现很多文章,但这些都不能解决上面的问题 怎样能 Glide动态加载不同大小的图片切圆形图片跟圆角图片呢?
解决很简单
既然是图片大小不一致而导致图片切出来不一样,那就把图片变的一样大小不就可以吗
申明一下我的代码也是在Glide动态加载圆形图片跟圆角图片搜出来的代码基础上修改的. 下面就是代码了.
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.2"
defaultConfig {
applicationId "cn.xm.weidongjian.glidedemo"
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:26.1.0'
compile 'com.github.bumptech.glide:glide:3.6.1'
}
activity_main.xml
<RelativeLayout
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"
tools:context=".MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="正常图片"
android:id="@+id/button"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"/>
<ImageView
android:layout_width="72dp"
android:layout_height="72dp"
android:id="@+id/imageView"
android:scaleType="fitCenter"
android:layout_below="@+id/button"
android:layout_alignRight="@+id/button"
android:layout_alignEnd="@+id/button"
android:layout_marginTop="150dp"/>
<ImageView
android:layout_width="72dp"
android:layout_height="72dp"
android:id="@+id/imageView2"
android:scaleType="fitCenter"
android:layout_below="@+id/imageView"
android:layout_alignRight="@+id/imageView"
android:layout_alignEnd="@+id/imageView"
android:layout_marginTop="5dp"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="圆角图片"
android:id="@+id/button2"
android:layout_below="@+id/button"
android:layout_alignLeft="@+id/button"
android:layout_alignRight="@+id/imageView"
android:layout_alignEnd="@+id/imageView"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="大圆角图片"
android:id="@+id/button3"
android:layout_below="@+id/button2"
android:layout_alignLeft="@+id/button2"
android:layout_alignStart="@+id/button2"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="圆形图片"
android:id="@+id/button4"
android:layout_below="@+id/button3"
android:layout_alignLeft="@+id/button"
android:layout_alignRight="@+id/button3"
android:layout_alignEnd="@+id/button3"/>
</RelativeLayout>
MainActivity
package cn.xm.weidongjian.glidedemo;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.RequestManager;
public class MainActivity extends AppCompatActivity implements OnClickListener {
private ImageView imageView;
private RequestManager glideRequest;
private Context context = this;
private ImageView imageView2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
private void init() {
findViewById(R.id.button).setOnClickListener(this);
findViewById(R.id.button2).setOnClickListener(this);
findViewById(R.id.button3).setOnClickListener(this);
findViewById(R.id.button4).setOnClickListener(this);
imageView = (ImageView) findViewById(R.id.imageView);
imageView2 = (ImageView) findViewById(R.id.imageView2);
glideRequest = Glide.with(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button:
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").into(imageView);
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").into(imageView2);
break;
case R.id.button2:
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").transform(new GlideRoundTransform(context)).into(imageView);
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").transform(new GlideRoundTransform(context)).into(imageView2);
break;
case R.id.button3:
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").transform(new GlideRoundTransform(context, 7)).into(imageView);
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").transform(new GlideRoundTransform(context, 7)).into(imageView2);
break;
case R.id.button4:
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1704146358.png").transform(new GlideCircleTransform(context)).into(imageView);
glideRequest.load("http://androidop.le890.com/hma/upload/2016/10/11/1716089900.png").transform(new GlideCircleTransform(context)).into(imageView2);
break;
}
}
}
GlideCircleTransform
package cn.xm.weidongjian.glidedemo;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
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.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
float r = size / 2f;
canvas.drawCircle(r, r, r, paint);
return result;
}
@Override public String getId() {
return getClass().getName();
}
}
GlideRoundTransform
package cn.xm.weidongjian.glidedemo;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.Log;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
public class GlideRoundTransform extends BitmapTransformation {
private static float radius = 0f;
public GlideRoundTransform(Context context) {
this(context, 4);
}
public GlideRoundTransform(Context context, int dp) {
super(context);
this.radius = Resources.getSystem().getDisplayMetrics().density * dp;
}
@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 bitmap = changeBitmapSize(source);
Bitmap result = pool.get(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_4444);
if (result == null) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
result = Bitmap.createBitmap(width,height, Bitmap.Config.ARGB_4444);
}
Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(bitmap, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
RectF rectF = new RectF(0f, 0f, bitmap.getWidth(), bitmap.getHeight());
canvas.drawRoundRect(rectF, radius, radius, paint);
return result;
}
public static Bitmap changeBitmapSize(Bitmap bitmap) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
//设置想要的大小
int newWidth=72;
int newHeight=72;
//计算压缩的比率
float scaleWidth=((float)newWidth)/width;
float scaleHeight=((float)newHeight)/height;
//获取想要缩放的matrix
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth,scaleHeight);
//获取新的bitmap
bitmap=Bitmap.createBitmap(bitmap,0,0,width,height,matrix,true);
bitmap.getWidth();
bitmap.getHeight();
Log.e("newWidth","newWidth"+bitmap.getWidth());
Log.e("newHeight","newHeight"+bitmap.getHeight());
return bitmap;
}
@Override public String getId() {
return getClass().getName() + Math.round(radius);
}
}
很简单吧,就是用changeBitmapSize方法把图片压缩到72*72的这样图片都一样大了,在切就不会出现切出来的图片效果不一样了
感谢你能够认真阅读完这篇文章,希望小编分享的“Android如何将Glide动态加载不同大小的图片切圆角与圆形”这篇文章对大家有帮助,同时也希望大家多多支持亿速云,关注亿速云行业资讯频道,更多相关知识等着你来学习!
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