![](/img/trans.png)
[英]Getting message in android app: Binary XML file line #2: You must supply a layout_width attribute
[英]Android Studio: Error when trying to run App, Supply_width attribute on line 0?
我似乎無法弄清楚為什么我的應用程序無法運行...我嘗試使所有程序無效並重新啟動,重建項目,並將布局寬度應用於所有內容,但仍然無法正常工作。 有什么要解決的問題嗎? 我真的對第0行問題的layout_width屬性感到困惑,到目前為止還無法弄清楚。
Logcat:
01-30 21:53:01.964 4622-4622/test.pkg.miclass.decode E/AndroidRuntime: FATAL EXCEPTION: main
Process: test.pkg.miclass.decode, PID: 4622
java.lang.RuntimeException: Unable to start activity ComponentInfo{test.pkg.miclass.decode/test.pkg.miclass.decode.MainActivity}: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: You must supply a layout_width attribute.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: You must supply a layout_width attribute.
Caused by: java.lang.UnsupportedOperationException: Binary XML file line #0: You must supply a layout_width attribute.
at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:775)
at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:7554)
at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:7746)
at android.widget.LinearLayout$LayoutParams.<init>(LinearLayout.java:1976)
at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:1874)
at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:1872)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:865)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:866)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at test.pkg.miclass.decode.MainActivity.onCreate(MainActivity.java:18)
at android.app.Activity.performCreate(Activity.java:6999)
at android.app.Activity.performCreate(Activity.java:6990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
這是我到目前為止的xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="383dp"
android:layout_height="510dp"
tools:context="test.pkg.miclass.decode.MainActivity">
<LinearLayout
android:layout_width="363dp"
android:layout_height="55dp"
android:orientation="horizontal"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Text:"
android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
<EditText
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="textPersonName" />
</LinearLayout>
<LinearLayout
android:layout_width="368dp"
android:layout_height="54dp"
android:orientation="horizontal"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="75dp">
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="KeyPhrase:"
android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
<EditText
android:id="@+id/keyphrase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="textPersonName" />
</LinearLayout>
<LinearLayout
android:layout_width="368dp"
android:layout_height="55dp"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="136dp">
<RadioGroup
android:id="@+id/encryptGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight=".7"
android:gravity="center">
<RadioButton
android:id="@+id/encrypt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:checked="true"
android:text="Encrypt" />
<RadioButton
android:id="@+id/decrypt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="RadioButton"
tools:text="Decrypt" />
</RadioGroup>
</LinearLayout>
<LinearLayout
android:layout_width="368dp"
android:layout_height="68dp"
android:orientation="horizontal"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="207dp">
<Button
android:id="@+id/runButton"
style="@style/Widget.AppCompat.Button"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Run" />
</LinearLayout>
<LinearLayout
android:layout_width="368dp"
android:layout_height="63dp"
android:orientation="horizontal"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="285dp">
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Results:"
android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
<EditText
android:id="@+id/result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="textPersonName" />
</LinearLayout>
</android.support.constraint.ConstraintLayout>
任何幫助將不勝感激!
將寬度分配給按鈕-:
添加此行-:
android:layout_width="wrap_content"
<Button
android:id="@+id/runButton"
style="@style/Widget.AppCompat.Button"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Run" />
您聲明兩個具有相同ID的android:id =“ @ + id / textView2”
和
<Button
android:id="@+id/runButton"
style="@style/Widget.AppCompat.Button"
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="Run"/>
視野中
<Button
android:id="@+id/runButton"
style="@style/Widget.AppCompat.Button"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Run" />
您添加以下行android:layout_width="wrap_content"
示例:
<Button
android:id="@+id/runButton"
style="@style/Widget.AppCompat.Button"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_width="wrap_content"
android:text="Run" />
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