android-studio - 无法在 Android Studio 新项目中解析“import android.support.v7.widget.GridLayout;”

Question

我尝试使用 GridLayout 作为

GridLayout maingrid=(GridLayout)findViewById(R.id.mainGridView);

但它使我的应用程序崩溃。针对这个问题上网冲浪给出了我应该使用的解决方案

android.support.v7.widget.GridLayout; 

而不是android.widget.GridLayout;但在使用这个时我得到错误无法解决v7。

搜索此问题并获得了许多更新build.gradle文件的解决方案，但它也因构建而失败。

build.gradle 文件最初：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        implementation 'com.android.support:cardview-v7:21.+'
        implementation 'com.android.support:recyclerview-v7:21.+'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()

    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

更新后：

    // Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        implementation 'com.android.support:appcompat-v7:26.1.1'
        implementation 'com.android.support.constraint:constraint-layout:1.0.2'
        implementation 'com.android.support:design:26.1.1'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()

    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.2"

    defaultConfig {
        minSdkVersion 16
        targetSdkVersion 26
    }
}

请帮我解决这个问题

标签： android-studioandroid-layoutandroid-support-libraryandroid-gridlayout

Answer 1

您不得将依赖项添加到 Project/build.gradle。

您必须将它们添加到 Project/app/build.gradle。

您必须将这些移动到块中的 Project/app/build.gradle dependencies：

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.android.support:design:26.1.1'