做网站需要多少职务,自己在家怎么做网站服务器,网站编辑做啥都,中企动力提供网站建设1. 图片网址url转化为bitmap
1.1. 方法一 通过 HttpURLConnection 请求 要使用一个线程去访问#xff0c;因为是网络请求#xff0c;这是一个一步请求#xff0c;不能直接返回获取#xff0c;要不然永远为null#xff0c;在这里得到BitMap之后记得使用Hanlder或者EventBu…1. 图片网址url转化为bitmap
1.1. 方法一 通过 HttpURLConnection 请求 要使用一个线程去访问因为是网络请求这是一个一步请求不能直接返回获取要不然永远为null在这里得到BitMap之后记得使用Hanlder或者EventBus传回主线程不过现在加载图片都是用框架了很少有转化为Bitmap的需求 /*** 通过 网络图片 url 获取图片 Bitmap* param photoUrl 网络图片 url*/private void requestWebPhotoBitmap(String photoUrl) {new Thread(() - {HttpURLConnection connection null;try {URL bitmapUrl new URL(photoUrl);connection (HttpURLConnection) bitmapUrl.openConnection();connection.setRequestMethod(GET);connection.setConnectTimeout(5000);connection.setReadTimeout(5000);// 判断是否请求成功if (connection.getResponseCode() 200) {Message hintMessage new Message();hintMessage.what HANDLER_START_DOWNLOAD;hintHandler.sendMessage(hintMessage);InputStream inputStream connection.getInputStream();imgBitmap BitmapFactory.decodeStream(inputStream);Message message showHandler.obtainMessage();showHandler.sendMessage(message);} else {Message hintMessage new Message();hintMessage.what HANDLER_NET_ERROR;hintHandler.sendMessage(hintMessage);}} catch (IOException e) {e.printStackTrace();} finally {if (connection ! null) connection.disconnect();}}).start();}/*** 设置提示*/private final Handler hintHandler new Handler(Looper.getMainLooper()){Overridepublic void handleMessage(Message msg) {if(msg.what HANDLER_START_DOWNLOAD)Toast.makeText(MainActivity.this, 获取图片中请稍等, Toast.LENGTH_SHORT).show();else if(msg.what HANDLER_NET_ERROR)Toast.makeText(MainActivity.this, 网络错误请重试, Toast.LENGTH_SHORT).show();}};/*** 展示图片*/SuppressLint(HandlerLeak)private final Handler showHandler new Handler(Looper.getMainLooper()) {Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);ivPhoto.setImageBitmap(imgBitmap); //填充控件}};1.2. 方法二 通过 Glide
1.2.1. java /*** 获取 网络图片 Bitmap* param imgUrl 网络图片url*/private void requestWebPhotoBitmap(String imgUrl) {Toast.makeText(MainActivity.this, 获取图片中请稍等, Toast.LENGTH_SHORT).show();Glide.with(MainActivity.this).asBitmap().load(imgUrl).into(new CustomTargetBitmap() {SuppressLint(ClickableViewAccessibility)Overridepublic void onResourceReady(NonNull Bitmap resource, Nullable Transition? super Bitmap transition) {imgBitmap resource;ivPhoto.setImageBitmap(imgBitmap)}Overridepublic void onLoadCleared(Nullable Drawable placeholder) {}});}1.2.2. kotlin Glide.with(this).asBitmap().load(paramBean.userImg).into(object : CustomTargetBitmap?() {override fun onResourceReady(resource: Bitmap, transition: Transitionin Bitmap??) {val bitmap resource}override fun onLoadCleared(placeholder: Drawable?) {}})
1.3. 调用 private Bitmap imgBitmap null;private ImageView ivPhoto;Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ivPhoto (ImageView) findViewById(R.id.photo);String imgUrl https://w.wallhaven.cc/full/l3/wallhaven-l3xk6q.jpg;requestWebPhotoBitmap(imgUrl);}
