Android-设置imageView Url时出错

当我从url显示图像时，应用程序崩溃。我做错了什么？ 请帮帮我。谢谢

我的布局

<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"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />
    <ImageView
        android:id="@+id/imageview"
        android:layout_gravity="center"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:scaleType="center"
        />
</RelativeLayout>

在AndroidManifest.xml中，我添加了

<uses-permission android:name="android.permission.INTERNET" />

但是，在运行和应用程序崩溃时，它仍然会显示错误

下面是Logcat

01-22 04:44:19.019: D/AndroidRuntime(4452): Shutting down VM
01-22 04:44:19.019: W/dalvikvm(4452): threadid=1: thread exiting with uncaught exception (group=0x40aba228)
01-22 04:44:19.029: E/AndroidRuntime(4452): FATAL EXCEPTION: main
01-22 04:44:19.029: E/AndroidRuntime(4452): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test/com.test.MainActivity}: android.os.NetworkOnMainThreadException
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2194)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2229)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.access$600(ActivityThread.java:139)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1261)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.os.Looper.loop(Looper.java:154)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.main(ActivityThread.java:4945)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.lang.reflect.Method.invokeNative(Native Method)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.lang.reflect.Method.invoke(Method.java:511)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at dalvik.system.NativeStart.main(Native Method)
01-22 04:44:19.029: E/AndroidRuntime(4452): Caused by: android.os.NetworkOnMainThreadException
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1178)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.net.InetAddress.lookupHostByName(InetAddress.java:394)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.net.InetAddress.getAllByNameImpl(InetAddress.java:245)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.net.InetAddress.getAllByName(InetAddress.java:220)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at com.test.MainActivity.onCreate(MainActivity.java:77)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.Activity.performCreate(Activity.java:4531)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2150)
01-22 04:44:19.029: E/AndroidRuntime(4452):     ... 11 more

01-22 04:44:19.019:D/AndroidRuntime（4452）：关闭虚拟机
01-22 04:44:19.019:W/dalvikvm（4452）：threadid=1:线程以未捕获异常退出（组=0x40aba228）
01-22 04:44:19.029:E/AndroidRuntime（4452）：致命异常：主
01-22 04:44:19.029:E/AndroidRuntime（4452）：java.lang.RuntimeException:无法启动活动组件信息{com.test/com.test.MainActivity}：android.os.NetworkOnMainThreadException
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2194）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2229）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.app.ActivityThread.access$600（ActivityThread.java:139）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.app.ActivityThread$H.handleMessage（ActivityThread.java:1261）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.os.Handler.dispatchMessage（Handler.java:99）上
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.os.Looper.loop（Looper.java:154）上
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于android.app.ActivityThread.main（ActivityThread.java:4945）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于java.lang.reflect.Method.Invokenactive（本机方法）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于java.lang.reflect.Method.invoke（Method.java:511）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:784）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于com.android.internal.os.ZygoteInit.main（ZygoteInit.java:551）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在dalvik.system.NativeStart.main（本机方法）
01-22 04:44:19.029:E/AndroidRuntime（4452）：由以下原因引起：android.os.NetworkOnMainThreadException
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork（StrictMode.java:1178）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于java.net.InetAddress.lookupHostByName（InetAddress.java:394）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于java.net.InetAddress.getAllByNameImpl（InetAddress.java:245）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于java.net.InetAddress.getAllByName（InetAddress.java:220）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpConnection.（HttpConnection.java:71）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpConnection.（HttpConnection.java:50）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpConnection$Address.connect（HttpConnection.java:351）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于libcore.net.http.HttpConnectionPool.get（HttpConnectionPool.java:86）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpConnection.connect（HttpConnection.java:128）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpEngine.openSocketConnection（HttpEngine.java:308）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpEngine.connect（HttpEngine.java:303）上
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpEngine.sendSocketRequest（HttpEngine.java:282）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpEngine.sendRequest（HttpEngine.java:232）上
01-22 04:44:19.029:E/AndroidRuntime（4452）：在libcore.net.http.HttpURLConnectionImpl.connect（HttpURLConnectionImpl.java:80）
01-22 04:44:19.029:E/AndroidRuntime（4452）：位于com.test.MainActivity.onCreate（MainActivity.java:77）
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.app.Activity.performCreate（Activity.java:4531）上
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1071）上
01-22 04:44:19.029:E/AndroidRuntime（4452）：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2150）
01-22 04:44:19.029:E/AndroidRuntime（4452）：。。。还有11个

您正在主UI线程上执行网络操作。如果您的目标SDK为11（蜂巢）或更高，这将引发

NetworkOnMainThreadException

，因为此行为会阻止UI并导致应用程序无响应

---

您可以使用

AsyncTask

来解决这个问题，将数据加载到

doInBackground（…）

中，请参见谢谢。我已经解决了这个问题。我也看到了

01-22 04:44:19.019: D/AndroidRuntime(4452): Shutting down VM
01-22 04:44:19.019: W/dalvikvm(4452): threadid=1: thread exiting with uncaught exception (group=0x40aba228)
01-22 04:44:19.029: E/AndroidRuntime(4452): FATAL EXCEPTION: main
01-22 04:44:19.029: E/AndroidRuntime(4452): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test/com.test.MainActivity}: android.os.NetworkOnMainThreadException
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2194)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2229)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.access$600(ActivityThread.java:139)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1261)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.os.Looper.loop(Looper.java:154)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.main(ActivityThread.java:4945)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.lang.reflect.Method.invokeNative(Native Method)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.lang.reflect.Method.invoke(Method.java:511)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at dalvik.system.NativeStart.main(Native Method)
01-22 04:44:19.029: E/AndroidRuntime(4452): Caused by: android.os.NetworkOnMainThreadException
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1178)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.net.InetAddress.lookupHostByName(InetAddress.java:394)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.net.InetAddress.getAllByNameImpl(InetAddress.java:245)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at java.net.InetAddress.getAllByName(InetAddress.java:220)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at com.test.MainActivity.onCreate(MainActivity.java:77)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.Activity.performCreate(Activity.java:4531)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071)
01-22 04:44:19.029: E/AndroidRuntime(4452):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2150)
01-22 04:44:19.029: E/AndroidRuntime(4452):     ... 11 more