使用RadioGroup / Button

Question

我正在创建一个简单的片段类，只用一行代码扩展Fragment。我的fragmentXML只有textview＆amp; RadioGroup中/按钮。这很简单，但仍然无法知道错误。 ： - （

片段类

package com.example.arslan.fragments;
import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class colorFragment1 extends Fragment {

public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedBundleInstance)
{
        return inflater.inflate(R.layout.color_fragment_layout,container,false);
}
}

color_fragment_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Select Color"
/>

<RadioGroup
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal">
<RadioButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="New RadioButton"
    android:id="@+id/radioButton"
    android:layout_gravity="center_horizontal" />
</RadioGroup>
</LinearLayout>

MainActivity     package com.example.arslan.fragments;

import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.graphics.Color;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity{

LinearLayout parent;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    parent = (LinearLayout)findViewById(R.id.parent);
    FragmentManager colorFragmentManager = getFragmentManager();
    FragmentTransaction colorFragmentTransaction = colorFragmentManager.beginTransaction();
    colorFragment1 colorFragmentObject = new colorFragment1();
    colorFragmentTransaction.add(R.id.fragment_container,colorFragmentObject);
    colorFragmentTransaction.commit();
}

activity_main

<LinearLayout 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"
    android:orientation="vertical"
    android:id="@+id/parent"
    tools:context=".MainActivity">
 <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Example Fragment Communication"/>
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:id="@+id/fragment_container"
    android:layout_marginTop="60dp"
    android:layout_marginLeft="20dp">
</RelativeLayout>
</LinearLayout>

logcat的

05-31 06:38:37.076    1773-1773/com.example.arslan.fragments E/VdcInflateDelegate﹕ Exception while inflating <vector>
org.xmlpull.v1.XmlPullParserException: Binary XML file line #17<vector> tag requires viewportWidth > 0
        at android.support.graphics.drawable.VectorDrawableCompat.updateStateFromTypedArray(VectorDrawableCompat.java:535)
        at android.support.graphics.drawable.VectorDrawableCompat.inflate(VectorDrawableCompat.java:472)
        at android.support.graphics.drawable.VectorDrawableCompat.createFromXmlInner(VectorDrawableCompat.java:436)
        at android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate.createFromXmlInner(AppCompatDrawableManager.java:704)
        at android.support.v7.widget.AppCompatDrawableManager.loadDrawableFromDelegates(AppCompatDrawableManager.java:356)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:182)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:175)
        at android.support.v7.widget.AppCompatDrawableManager.createDrawableIfNeeded(AppCompatDrawableManager.java:236)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:184)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:175)
        at android.support.v7.widget.AppCompatCompoundButtonHelper.loadFromAttributes(AppCompatCompoundButtonHelper.java:64)
        at android.support.v7.widget.AppCompatRadioButton.<init>(AppCompatRadioButton.java:61)
        at android.support.v7.widget.AppCompatRadioButton.<init>(AppCompatRadioButton.java:54)
        at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:120)
        at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:972)
        at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1030)
        at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
        at com.example.arslan.fragments.colorFragment1.onCreateView(colorFragment1.java:17)
        at android.app.Fragment.performCreateView(Fragment.java:1699)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:885)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1057)
        at android.app.BackStackRecord.run(BackStackRecord.java:682)
        at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1435)
        at android.app.Activity.performStart(Activity.java:5113)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2153)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
        at android.app.ActivityThread.access$600(ActivityThread.java:141)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:5041)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
        at dalvik.system.NativeStart.main(Native Method)

Gradle.built

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsVersion "23.0.3"

defaultConfig {
    applicationId "com.example.arslan.fragments"
    minSdkVersion 12
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

repositories {
maven { url 'http://repo1.maven.org/maven2' }
jcenter { url "http://jcenter.bintray.com/" }
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:24.0.0-alpha2'
}

注意： 如果我删除无线电组＆amp;来自xml文件的radiobutton。代码工作正常。因此，请不要提出任何涉及删除这些视图元素的建议。