从通知的Android URL加载图像 [英] Load image from url in notification Android
本文介绍了从通知的Android URL加载图像的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在我的Android应用程序，我想动态设置通知图标将从URL被加载。对于这一点，我已经使用NotificationBuilder的 setLargeIcon 属性接收。我下文称多联系，但并尝试不同的解决方案，但couldn T获得所需的输出。虽然我是从网上下载的URL和设置在通知位图图像，它没有显示，而是显示 setSmallIcon 图像作为大图标。我不知道我要去的地方错了。在这里，我张贴我的code。请帮我解决这个问题。谢谢你。
code：
@燮pressLint（NewApi）
公共类C2DMMessageReceiver扩展广播接收器{ @覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
字符串行动= intent.getAction（）;
如果（com.google.android.c2dm.intent.RECEIVE.equals（动作））{
Log.e（C2DM，收到的消息）;
最后弦乐全名= intent.getStringExtra（信息）;
最后弦乐payload1 = intent.getStringExtra（MESSAGE1）;
最后弦乐payload2 = intent.getStringExtra（消息2）;
最后弦乐userImage = intent.getStringExtra（userImage）; Log.e（userImage URL：，userImage）; //它显示正确的URL 新sendNotification时（上下文）
.execute（全名，payload1，userImage）;
}
}私有类sendNotification的扩展的AsyncTask＆LT;弦乐，太虚，位图＆GT; { 上下文CTX;
字符串消息; 公共sendNotification时（上下文的背景下）{
超（）;
this.ctx =背景;
} @覆盖
保护位图doInBackground（字符串... PARAMS）{ 在的InputStream;
消息=参数[0] +参数[1];
尝试{ 。在=新的URL（PARAMS [2]）的OpenStream（）;
BMP位图= BitmapFactory.de codeStream（中）;
返回BMP; }赶上（MalformedURLException的E）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
}
返回null;
} @覆盖
保护无效onPostExecute（位图结果）{ super.onPostExecute（结果）;
尝试{
NotificationManager notificationManager =（NotificationManager）CTX
.getSystemService（Context.NOTIFICATION_SERVICE）; 意向意图=新意图（CTX，NotificationsActivity.class）;
intent.putExtra（isFromBadge，FALSE）;
通知通知=新Notification.Builder（CTX）
.setContentTitle（
ctx.getResources（）的getString（R.string.app_name））
.setContentText（消息）
.setSmallIcon（R.drawable.ic_launcher）
.setLargeIcon（结果）.build（）; //隐藏其选中后通知
notification.flags | = Notification.FLAG_AUTO_CANCEL; notificationManager.notify（1，通知）; }赶上（例外五）{
e.printStackTrace（）;
}
}
}
解决方案
改变了我的code下面和现在的工作：
私有类sendNotification的扩展的AsyncTask＆LT;弦乐，太虚，位图＆GT; { 上下文CTX;
字符串消息; 公共sendNotification时（上下文的背景下）{
超（）;
this.ctx =背景;
} @覆盖
保护位图doInBackground（字符串... PARAMS）{ 在的InputStream;
消息=参数[0] +参数[1];
尝试{ 网址URL =新的URL（PARAMS [2]）;
HttpURLConnection的连接=（HttpURLConnection类）url.openConnection（）;
connection.setDoInput（真）;
connection.connect（）;
在= connection.getInputStream（）;
位图MYBITMAP = BitmapFactory.de codeStream（中）;
返回MYBITMAP;
}赶上（MalformedURLException的E）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
}
返回null;
} @覆盖
保护无效onPostExecute（位图结果）{ super.onPostExecute（结果）;
尝试{
NotificationManager notificationManager =（NotificationManager）CTX
.getSystemService（Context.NOTIFICATION_SERVICE）; 意向意图=新意图（CTX，NotificationsActivity.class）;
intent.putExtra（isFromBadge，FALSE）;
通知通知=新Notification.Builder（CTX）
.setContentTitle（
ctx.getResources（）的getString（R.string.app_name））
.setContentText（消息）
.setSmallIcon（R.drawable.ic_launcher）
.setLargeIcon（结果）.build（）; //隐藏其选中后通知
notification.flags | = Notification.FLAG_AUTO_CANCEL; notificationManager.notify（1，通知）; }赶上（例外五）{
e.printStackTrace（）;
}
}
}
In my android application, i want to set Notification icons dynamically which will be loaded from URL. For that, i have used setLargeIcon property of NotificationBuilder in receiver.I reffered many link but and tried various solutions but couldn't get desired output. Though i am downloaded that image from url and setting that bitmap in notification, its not being displayed,instead it displays the setSmallIcon image as large icon. I don't know where i am going wrong. Here i am posting my code. Please help me to solve this issue. Thank you.
Code:
@SuppressLint("NewApi")
public class C2DMMessageReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if ("com.google.android.c2dm.intent.RECEIVE".equals(action)) {
Log.e("C2DM", "received message");
final String fullName = intent.getStringExtra("message");
final String payload1 = intent.getStringExtra("message1");
final String payload2 = intent.getStringExtra("message2");
final String userImage = intent.getStringExtra("userImage");
Log.e("userImage Url :", userImage); //it shows correct url
new sendNotification(context)
.execute(fullName, payload1, userImage);
}
}
private class sendNotification extends AsyncTask<String, Void, Bitmap> {
Context ctx;
String message;
public sendNotification(Context context) {
super();
this.ctx = context;
}
@Override
protected Bitmap doInBackground(String... params) {
InputStream in;
message = params[0] + params[1];
try {
in = new URL(params[2]).openStream();
Bitmap bmp = BitmapFactory.decodeStream(in);
return bmp;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
try {
NotificationManager notificationManager = (NotificationManager) ctx
.getSystemService(Context.NOTIFICATION_SERVICE);
Intent intent = new Intent(ctx, NotificationsActivity.class);
intent.putExtra("isFromBadge", false);
Notification notification = new Notification.Builder(ctx)
.setContentTitle(
ctx.getResources().getString(R.string.app_name))
.setContentText(message)
.setSmallIcon(R.drawable.ic_launcher)
.setLargeIcon(result).build();
// hide the notification after its selected
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(1, notification);
} catch (Exception e) {
e.printStackTrace();
}
}
}
解决方案
Changed my code as below and its working now :
private class sendNotification extends AsyncTask<String, Void, Bitmap> {
Context ctx;
String message;
public sendNotification(Context context) {
super();
this.ctx = context;
}
@Override
protected Bitmap doInBackground(String... params) {
InputStream in;
message = params[0] + params[1];
try {
URL url = new URL(params[2]);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
in = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(in);
return myBitmap;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
try {
NotificationManager notificationManager = (NotificationManager) ctx
.getSystemService(Context.NOTIFICATION_SERVICE);
Intent intent = new Intent(ctx, NotificationsActivity.class);
intent.putExtra("isFromBadge", false);
Notification notification = new Notification.Builder(ctx)
.setContentTitle(
ctx.getResources().getString(R.string.app_name))
.setContentText(message)
.setSmallIcon(R.drawable.ic_launcher)
.setLargeIcon(result).build();
// hide the notification after its selected
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(1, notification);
} catch (Exception e) {
e.printStackTrace();
}
}
}
这篇关于从通知的Android URL加载图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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