Question

正如标题中已经提到的那样，当我单击TextField-Widgets时，我的键盘没有显示。我的应用程序中的每个TextField都是相同的，但并非总是如此。不幸的是，我没有使用版本控制，所以我无法找出导致它的错误。

我认为代码中没有错误，我的flutter doctor也很好。我将放置pubspec.yaml和build.gradle文件，因为我更改了其中的一些内容，也许有帮助。我还将举一个文本框示例。

在我测试过的两个Android设备（都在Android 9.0上）上都会发生这种情况。我在8.1 Oreo的模拟器上试用了它，键盘似乎可以在那儿工作。

我的一种使用情况：

SliverList(
  delegate: SliverChildListDelegate([
    ListTile(
      leading: Icon(Icons.call_to_action),
      title: TextField(
        decoration: InputDecoration(
            labelText: "Name", border: InputBorder.none),
      ),
    ),
  ]),

pubspec.yaml：

name: whatever
description: A new Flutter application.

dependencies:
  flutter:
    sdk: flutter

  google_sign_in: ^3.2.1

  googleapis: ^0.52.0

  googleapis_auth: ^0.2.5+2

  sqflite: ^0.12.2+1

  firebase_core: ^0.2.5+1

  firebase_database: ^1.0.5

  barcode_scan: ^0.0.7

  numberpicker: ^0.1.7

  flutter_speed_dial: ^1.0.8

  image_picker: ^0.4.10

  chewie: ^0.8.0

  sticky_headers: ^0.1.7

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true

  assets:
      - assets/

  fonts:
    - family: Circular
      fonts:
        - asset: fonts/circular-regular.ttf
        - asset: fonts/circular-bold.ttf
          weight: 700

应用级build.gradle：

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

apply plugin: 'com.android.application'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 28

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.whatever"
        minSdkVersion 16
        targetSdkVersion 28
        multiDexEnabled true
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    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'
    implementation 'com.google.firebase:firebase-core:16.0.4'
    implementation 'com.android.support:multidex:1.0.3'
}

apply plugin: 'com.google.gms.google-services'

项目级build.gradle：

buildscript {
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'
        classpath 'com.google.gms:google-services:4.1.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

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

Answer 1

Targeting API 28似乎在物理设备上显示键盘有一些问题提供一些链接，希望它们可以帮助您解决问题

Github Flutter and API 28

Physical devices keyboard not popping up

Answer 2

将我的targetSdkVersion更改为27可解决我的问题...

Answer 3

如here in Github所述，从我的enableFlutterDriverExtension()方法中删除void main()可以为我解决这个问题。我仍在使用API 28（无需降级到27）

Flutter：键盘未在Android上显示为Textfield

3 个答案: