Question

我最近开始编程，当我执行下面显示的基本 ImageView 和 TextView 时。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >


    <TextView>
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/texttry" />
    </TextView>


    <ImageView 
        android:id="@+id/joe"
        android:src="@drawable/joe"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

模拟器崩溃了，logcat发出了这个错误：

11-24 11:09:20.938: D/AndroidRuntime(713): Shutting down VM
11-24 11:09:20.938: W/dalvikvm(713): threadid=3: thread exiting with uncaught exception (group=0x4001aa28)
11-24 11:09:20.938: E/AndroidRuntime(713): Uncaught handler: thread main exiting due to uncaught exception
11-24 11:09:20.958: E/AndroidRuntime(713): java.lang.RuntimeException: Unable to start activity ComponentInfo{tristan.wuker.wrje/tristan.wuker.wrje.MrttestActivity}: java.lang.RuntimeException: Binary XML file line #10: You must supply a layout_width attribute.
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.ActivityThread.access$2100(ActivityThread.java:116)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.os.Handler.dispatchMessage(Handler.java:99)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.os.Looper.loop(Looper.java:123)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.ActivityThread.main(ActivityThread.java:4203)
11-24 11:09:20.958: E/AndroidRuntime(713):  at java.lang.reflect.Method.invokeNative(Native Method)
11-24 11:09:20.958: E/AndroidRuntime(713):  at java.lang.reflect.Method.invoke(Method.java:521)
11-24 11:09:20.958: E/AndroidRuntime(713):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
11-24 11:09:20.958: E/AndroidRuntime(713):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
11-24 11:09:20.958: E/AndroidRuntime(713):  at dalvik.system.NativeStart.main(Native Method)
11-24 11:09:20.958: E/AndroidRuntime(713): Caused by: java.lang.RuntimeException: Binary XML file line #10: You must supply a layout_width attribute.
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:438)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:3433)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:3513)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.widget.LinearLayout$LayoutParams.<init>(LinearLayout.java:1265)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:1191)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:45)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:619)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
11-24 11:09:20.958: E/AndroidRuntime(713):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:313)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.Activity.setContentView(Activity.java:1620)
11-24 11:09:20.958: E/AndroidRuntime(713):  at tristan.wuker.wrje.MrttestActivity.onCreate(MrttestActivity.java:11)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
11-24 11:09:20.958: E/AndroidRuntime(713):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
11-24 11:09:20.958: E/AndroidRuntime(713):  ... 11 more
11-24 11:09:20.978: I/dalvikvm(713): threadid=7: reacting to signal 3
11-24 11:09:20.978: E/dalvikvm(713): Unable to open stack trace file '/data/anr/traces.txt': Permission denied

我也是这个网站的新手，所以如果我发布了这个错误，我很抱歉。

此外，如果有必要知道，当我拿出ImageView时，文字就像魅力一样。

Answer 1

我相信你最终会想到，日志会告诉你问题出在哪里。特别是这条线（我缩短了它适合）：

11-24 11:09:20.958 .. Caused by.. #10: You must supply a layout_width attribute.

正如您在下面的代码段中看到的那样：

<TextView>
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/texttry" />
</TextView>

在指定任何属性之前，您过早关闭了＆lt; TextView \＆gt; 元素。记录提到的是_layout_width _。

所有你需要做的就是解决这个问题＆＃39;从 TextView 元素开头删除右侧shevron，如下所示：

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/texttry" />
</TextView>

热潮，完成:)

PS：虽然fill_parent已弃用了一小部分细节，但您应该使用match_parent代替：

<TextView>
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/texttry" />
</TextView>

Answer 2

我刚刚尝试了您的代码，并且在我取出结束</TextView>代码时似乎有效：

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >


    <TextView

    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/texttry" />



    <ImageView 
   android:id="@+id/joe"
   android:src="@drawable/joe"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   />
</LinearLayout>

模拟器与TextView和ImageView崩溃

2 个答案:

热潮，完成:)