android - 我所有的 xml 文件在 AndroidStudio 项目中都有错误

Question

看起来所有 xml 文件 AndroidManifest.xml 和 res xml 文件都有错误，例如“未注册 URI（设置 | 语言和框架 | 架构和 DTD）”和“属性 android：此处不允许”错误。

例如这是我的清单文件：

<uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>

<permission
        android:name="spartons.com.javadriverapp.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>

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


<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:replace="android:appComponentFactory"
        tools:ignore="GoogleAppIndexingWarning">
    <activity android:name=".MainActivity"
        android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>

            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>

    <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version"/>

    <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="@string/map_api_key"/>

</application>

xmlns:android 和 xmlns:tool 标签有 URI 错误，大多数 android 标签有属性是不允许的。

这是我的应用程序 build.graddle：

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "spartons.com.javadriverapp"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.android.support:animated-vector-drawable:28.0.0'
    implementation 'com.android.support:recyclerview-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.google.android.gms:play-services-maps:16.0.0'
    implementation "com.google.android.gms:play-services-location:16.0.0"
    implementation 'com.google.firebase:firebase-database:16.0.5'
    implementation 'com.google.firebase:firebase-analytics:17.2.2'
    implementation 'com.afollestad.material-dialogs:core:0.9.6.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'

可能是什么问题呢？

标签： androidxmlandroid-studiogradle

Answer 1

您需要在 xml 的顶部或父布局中添加工具和 android 属性的架构

像这样

<?xml version="1.0" encoding="utf-8"?>
<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">

如果它已经存在仍然出现错误，则在布局的第一行单击 ALT + ENTER