我不断收到这样的错误,怎么了?还有其他问题吗? 这给出了前三个红色的bug!
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppcompatActivity;
import android.support.annotation.IdRes;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar
;
我是android开发的新手,并且我一直在使用命令行工具来创建android项目。我按照android开发人员指南中给出的所有说明进行操作。但是,他们更专注于IDE用户。
findbugs {
sourceSets = []
ignoreFailures = false
}
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "video.compress.optimizasyon"
minSdkVersion 19
targetSdkVersion 29
versionCode 20
versionName "0.20"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
lintOptions {
disable "GoogleAppIndexingWarning"
disable "MissingTranslation"
}
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
// ACRA depends on Java 8
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.browser:browser:1.0.0'
implementation 'com.google.android.material:material:1.0.0'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.android.support:appcompat-v7:27.0.0'
implementation 'com.crystal:crystalrangeseekbar:1.1.3'
implementation 'commons-io:commons-io:2.6'
implementation group: 'com.google.guava', name: 'guava', version: '24.1-jre'
implementation 'com.nononsenseapps:filepicker:4.2.1'
implementation 'com.simplecityapps:recyclerview-fastscroll:1.0.18'
implementation group: 'org.javatuples', name: 'javatuples', version: '1.2'
implementation 'com.fasterxml.jackson.core:jackson-databind:2.9.8'
implementation 'ch.acra:acra:4.11'
implementation 'com.google.android.gms:play-services-ads:18.2.0'
implementation 'com.google.firebase:firebase-core:17.2.0'
implementation 'com.google.firebase:firebase-analytics:17.2.0'
}
答案 0 :(得分:0)
您正在使用androidx库。
删除此依赖项,因为您使用的是材料组件库:
implementation 'com.android.support:appcompat-v7:27.0.0'
然后更改这些类(代码和布局):
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppcompatActivity;
import android.support.annotation.IdRes;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar
到
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.annotation.IdRes;
import androidx.appcompat.app.ActionBar;
//import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar
完整的class mapping。