android - ANR:输入调度超时 - 从 URL 创建位图
问题描述
在我的 Android 应用程序中,我正在从图像 URL 创建位图。下面是我编写的从图像 URL 创建位图的代码——
public static Bitmap getBitmapFromURL(String src)
{
try
{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
我的应用程序在 Play-store 上,此代码影响少数设备,因为它们正在获得“输入调度超时”ANR。以下是我从 Google Play Console 的“ANR 和崩溃”部分获得的 ANR 详细信息——
“输入调度超时(等待发送非键事件,因为触摸窗口尚未完成对 500.0 毫秒前传递给它的某些输入事件的处理。等待队列长度:60。等待队列头年龄:10502.8 毫秒。) ”
以下是来自 Google Play 控制台的完整日志——
"main" prio=5 tid=1 Native
| group="main" sCount=1 dsCount=0 obj=0x75a2c598 self=0xa4e84400
| sysTid=522 nice=0 cgrp=default sched=0/0 handle=0xa7d13534
| state=S schedstat=( 0 0 0 ) utm=114 stm=42 core=1 HZ=100
| stack=0xbe467000-0xbe469000 stackSize=8MB
| held mutexes=
#00 pc 0000000000048cb4 /system/lib/libc.so (__ppoll+20)
#01 pc 000000000001cf3f /system/lib/libc.so (poll+46)
#02 pc 0000000000012cb7 /system/lib/libjavacrypto.so (???)
#03 pc 000000000000f24b /system/lib/libjavacrypto.so (???)
#04 pc 000000000000e5cd /system/framework/arm/boot-conscrypt.oat (Java_com_android_org_conscrypt_NativeCrypto_SSL_1read__JLjava_io_FileDescriptor_2Lcom_android_org_conscrypt_NativeCrypto_00024SSLHandshakeCallbacks_2_3BIII+192)
at com.android.org.conscrypt.NativeCrypto.SSL_read (Native method)
at com.android.org.conscrypt.OpenSSLSocketImpl$SSLInputStream.read (OpenSSLSocketImpl.java:761)
- locked <0x06eb358f> (a java.lang.Object)
at com.android.okhttp.okio.Okio$2.read (Okio.java:142)
at com.android.okhttp.okio.AsyncTimeout$2.read (AsyncTimeout.java:218)
at com.android.okhttp.okio.RealBufferedSource.indexOf (RealBufferedSource.java:312)
at com.android.okhttp.okio.RealBufferedSource.indexOf (RealBufferedSource.java:306)
at com.android.okhttp.okio.RealBufferedSource.readUtf8LineStrict (RealBufferedSource.java:202)
at com.android.okhttp.internal.http.HttpConnection.readResponse (HttpConnection.java:210)
at com.android.okhttp.internal.http.HttpTransport.readResponseHeaders (HttpTransport.java:81)
at com.android.okhttp.internal.http.HttpEngine.readNetworkResponse (HttpEngine.java:960)
at com.android.okhttp.internal.http.HttpEngine.readResponse (HttpEngine.java:836)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute (HttpURLConnectionImpl.java:480)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse (HttpURLConnectionImpl.java:422)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream (HttpURLConnectionImpl.java:256)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getInputStream (DelegatingHttpsURLConnection.java:210)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getInputStream (HttpsURLConnectionImpl.java)
at come.xyz.myapp.util.AppHelper.getBitmapFromURL (AppHelper.java:66)
at come.xyz.myapp.Adapters.ScratchersAdapter.instantiateItem (ScratchersAdapter.java:706)
at android.support.v4.view.ViewPager.addNewItem (ViewPager.java:1004)
at android.support.v4.view.ViewPager.populate (ViewPager.java:1218)
at android.support.v4.view.ViewPager.populate (ViewPager.java:1086)
at android.support.v4.view.ViewPager.setAdapter (ViewPager.java:534)
at come.xyz.myapp.widgets.InfiniteViewPager.setAdapter (InfiniteViewPager.java:40)
at come.xyz.myapp.Fragments.DailyScratchersFragment.updateAdapter (DailyScratchersFragment.java:965)
at come.xyz.myapp.Fragments.DailyScratchersFragment.onCaughtContent (DailyScratchersFragment.java:750)
at come.xyz.coresdk.CoreLibrary.onCaughtContent (CoreLibrary.java:591)
at come.xyz.coresdk.asynctasks.CatchScratcherSetTask.onPostExecute (CatchScratcherSetTask.java:82)
at come.xyz.coresdk.asynctasks.CatchScratcherSetTask.onPostExecute (CatchScratcherSetTask.java:22)
at android.os.AsyncTask.finish (AsyncTask.java:660)
at android.os.AsyncTask.-wrap1 (AsyncTask.java)
at android.os.AsyncTask$InternalHandler.handleMessage (AsyncTask.java:677)
at android.os.Handler.dispatchMessage (Handler.java:102)
at android.os.Looper.loop (Looper.java:154)
at android.app.ActivityThread.main (ActivityThread.java:6317)
at java.lang.reflect.Method.invoke! (Native method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:872)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:762)
之前在 stackoverflow 上针对相同问题发布了几个问题,但我发现没有一个问题对我有用。如果我可以提供有关此问题的更多信息,请告诉我。谢谢你。
解决方案
我相信您正在主线程上下载图像,这将导致 ANR,我相信您需要在后台线程中进行,如 asynctask 或使用这些第 3 方之一 https://github.com/bumptech/glide或http: //square.github.io/picasso/
推荐阅读
- javascript - 我正在将表中的数据导出为 CSV 和 JavaScript 变量。. 但是得到错误 "fputcsv() 期望参数 2 是数组" 。怎么做?
- apache-flink - CEP 是否可以将事件与复杂模式关联起来?
- javascript - 看来我不能使用来自 CDN 导入的 JS 代码
- python - 我正在尝试在我的 Mac 书上安装 kivy。但我得到下面的错误
- python - 如何遍历嵌套在列表中的字典
- c++ - 带有 CPP 和 ASM 的 CMake 项目
- amazon-web-services - 记录 AWS API Gateway API
- powershell - 如何帮助 Powershell 找到远程服务器?
- php - WordPress 中的 AJAX 调用在 Windows 而非 Mac 上返回 400 错误
- javascript - Fetch 返回 404 未在 Web 组件中找到