应该用 TabBarView，TabController 控制 Tab 内容，而不是使用 IndexedStack。

我们后端都是Java哈，消息app侧也有cpp、ios和android。欢迎大家加入。
招聘, 微信：kerisle，
大家也可以直接发邮件
[email protected]

flutter run 时 flutter package get 时间太长了

Launching lib/main.dart on 127.0.0.1:62001 in debug mode...
Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...

Compiler message:
file://.pub-cache/hosted/pub.dartlang.org/cached_network_image-0.5.1/lib/cached_network_image.dart:199:38: Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.

• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  oldImageStream?.removeListener(_handleImageChanged);
  ^
  file:////Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-0.5.1/lib/cached_network_image.dart:200:32: Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  _imageStream.addListener(_handleImageChanged);
  ^
  file:////Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-0.5.1/lib/cached_network_image.dart:210:34: Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  _imageStream?.removeListener(_handleImageChanged);
  ^
  file:////Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-0.5.1/lib/cached_network_image.dart:465:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable Function()'.
• 'StringBuffer' is from 'dart:core'.
• 'Iterable' is from 'dart:core'.
• 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
  Try changing the type of the parameter, or casting the argument to 'Iterable Function()'.
  informationCollector: (StringBuffer information) {
  ^
  file:////Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/palette_generator-0.1.1/lib/palette_generator.dart:188:29: Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:////Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  stream.removeListener(imageListener);
  ^
  file:////Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/palette_generator-0.1.1/lib/palette_generator.dart:194:31: Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  stream.removeListener(imageListener);
  ^
  file:///Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/palette_generator-0.1.1/lib/palette_generator.dart:201:24: Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  stream.addListener(imageListener);
  ^
  file:///Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/photo_view-0.2.5/lib/photo_view.dart:279:24: Error: The argument type 'Null Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  stream.addListener(listener);
  ^
  file:///Flutter/flutter/.pub-cache/hosted/pub.dartlang.org/photo_view-0.2.5/lib/photo_view.dart:281:29: Error: The argument type 'Null Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.
• 'ImageInfo' is from 'package:flutter/src/painting/image_stream.dart' ('file:///Flutter/flutter/packages/flutter/lib/src/painting/image_stream.dart').
• 'ImageStreamListener' is from 'package:flutter/src/painting/image_stream.dart' ('file:////flutter/packages/flutter/lib/src/painting/image_stream.dart').
  Try changing the type of the parameter, or casting the argument to 'ImageStreamListener'.
  stream.removeListener(listener);
  ^
  Compiler failed on /movie/lib/main.dart

FAILURE: Build failed with an exception.

• Where:
  Script '/Flutter/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 648

• What went wrong:
  Execution failed for task ':app:compileflutterBuildDebugandroid-arm'.

Process 'command '/Flutter/flutter/bin/flutter'' finishHzed with non-zero exit value 1

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 26s
Finished with error: Gradle task assembleDebug failed with exit code 1

Error: The argument type 'void Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.

我把项目打包到手机以后，发现有一些不是很完美的地方：首页下拉刷新以后出出现的Loading 动画，总是要卡壳一下（进到详情页面的Loading也有这个问题），所以这个有解决的办法吗？

Mayandev，你好：
发现一个小bug，在我的页面，状态栏显示是白色的，当点击项目地址跳转后，再返回时状态栏显示变黑色的。此时再点击‘我的’按钮，状态栏变白色。我查了下资料，页面的生命周期，在页面重新显示时会调用build方法，通过测试确实调用了build方法，但是‘Screen.updateStatusBarStyle(SystemUiOverlayStyle.light);’这个方法貌似失效了，安卓和ios都存在相同问题。
我是做了一个异步延时操作，视觉上可以解决显示问题，原因不明：
Future.delayed(Duration(microseconds: 200), () {
Screen.updateStatusBarStyle(SystemUiOverlayStyle.light);
});

D:\morecNew>flutter run
Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling
software rendering with "--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle... 1.7s
Resolving dependencies...

• Error running Gradle:
  ProcessException: Process "D:\morecNew\android\gradlew.bat" exited abnormally:

Configure project :app

Project evaluation failed including an error in afterEvaluate {}. Run with --stacktrace for details of the afterEvaluate{} error.

FAILURE: Build failed with an exception.

• Where:
  Build file 'D:\morecNew\android\app\build.gradle' line: 25

• What went wrong:
  A problem occurred evaluating project ':app'.

Could not resolve all artifacts for configuration 'classpath'.
Could not resolve com.android.tools.build:gradle:3.2.1.
Required by:
unspecified:unspecified:unspecified
> Could not resolve com.android.tools.build:gradle:3.2.1.
> Could not get resource
'https://maven.aliyun.com/repository/google/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Could not HEAD
'https://maven.aliyun.com/repository/google/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Connect to 127.0.0.1:6600 [/127.0.0.1] failed: Connection refused: connect
> Could not resolve com.android.tools.build:gradle:3.2.1.
> Could not get resource
'https://maven.aliyun.com/repository/jcenter/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Could not HEAD
'https://maven.aliyun.com/repository/jcenter/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Connect to 127.0.0.1:6600 [/127.0.0.1] failed: Connection refused: connect
> Could not resolve com.android.tools.build:gradle:3.2.1.
> Could not get resource
'http://maven.aliyun.com/nexus/content/groups/public/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Could not HEAD
'http://maven.aliyun.com/nexus/content/groups/public/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'. > Connect to 127.0.0.1:6600 [/127.0.0.1] failed: Connection refused: connect

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with
  --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 9s
Command: D:\morecNew\android\gradlew.bat app:properties

Please review your Gradle project setup in the android/ folder.

您好，请问：我通过https://api.douban.com/v2/movie/subject/:movieid/这个api获取到电影详情页的演员人数为4，但是看您的软件里的电影详情页，不止有4人，请问这是为什么呢？

原代码处https://github.com/dengchaojie/flutterDemo

能支持一下Flutter2.0吗？

我新建了一个项目，lib下按你的代码拷贝进去，能够正常运行，但是视频播放不了，你的原项目就可以，是iOS目录有修改什么吗？或者其他需要注意的地方吗

我对这个项目很有兴趣，觉得很完美只可惜目前不支持Flutter2.0+.

Launching lib/main.dart on iPhone 11 in debug mode...

Compiler message:
/usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-1.1.3/lib/src
/cached_network_image_provider.dart:42:24: Error: The method
'CachedNetworkImageProvider.load' has fewer positional arguments than those of
overridden method 'ImageProvider.load'.
  ImageStreamCompleter load(CachedNetworkImageProvider key) {
                       ^
/usr/local/flutter/packages/flutter/lib/src/painting/image_provider.dart:403:24:
Context: This is the overridden method ('load').
  ImageStreamCompleter load(T key, DecoderCallback decode);
                       ^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
Failed to build bundle.
Error launching application on iPhone 11.

这个是属于版本导致的问题么？

我的环境是：

Flutter 1.12.13+hotfix.7 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 9f5ff2306b (35 小时前) • 2020-01-26 22:38:26 -0800
Engine • revision a67792536c
Tools • Dart 2.7.0

/Users/zhen7g/flutter/.pub-cache/hosted/pub.flutter-io.cn/flutter_webview_plugin-0.3.1/android/src/main/java/com/flutter_webview_plugin/WebviewManager.java:133: 警告: [unchecked] 未经检查的转换
mUploadMessage = uploadMsg;
^
需要: ValueCallback
找到: ValueCallback
/Users/zhen7g/flutter/.pub-cache/hosted/pub.flutter-io.cn/flutter_webview_plugin-0.3.1/android/src/main/java/com/flutter_webview_plugin/WebviewManager.java:186: 警告: [deprecation] CookieManager中的removeAllCookie()已过时
CookieManager.getInstance().removeAllCookie();
^
/Users/zhen7g/flutter/.pub-cache/hosted/pub.flutter-io.cn/flutter_webview_plugin-0.3.1/android/src/main/java/com/flutter_webview_plugin/FlutterWebviewPlugin.java:237: 警告: [deprecation] CookieManager中的removeAllCookie()已过时
CookieManager.getInstance().removeAllCookie();
^
3 个警告
/Users/zhen7g/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.0.3/android/src/main/java/io/github/ponnamkarthik/toast/fluttertoast/FluttertoastPlugin.java:92: 警告: [deprecation] Resources中的getDrawable(int)已过时
shapeDrawable = ctx.getResources().getDrawable(R.drawable.toast_bg);
^
1 个警告
/Users/zhen7g/flutter/.pub-cache/hosted/pub.flutter-io.cn/video_player-0.10.0+2/android/src/main/java/io/flutter/plugins/videoplayer/VideoPlayerPlugin.java:20: 警告: [deprecation] Player中的DefaultEventListener已过时
import com.google.android.exoplayer2.Player.DefaultEventListener;
^
/Users/zhen7g/flutter/.pub-cache/hosted/pub.flutter-io.cn/video_player-0.10.0+2/android/src/main/java/io/flutter/plugins/videoplayer/VideoPlayerPlugin.java:154: 警告: [deprecation] Player中的DefaultEventListener已过时
new DefaultEventListener() {
^
2 个警告

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.

More than one file was found with OS independent path 'META-INF/proguard/androidx-annotations.pro'

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 13s
AndroidX incompatibilities may have caused this build to fail. Please migrate your app to AndroidX. See https://goo.gl/CP92wY.
Finished with error: Gradle task assembleDebug failed with exit code 1

同使用豆瓣电影api开发的项目，但是api已失效，不过部分可以使用时光网的api替代。

时光网热映电影：
https://api-m.mtime.cn/Showtime/LocationMovies.api?locationId=561

时光网即将上映电影:
https://api-m.mtime.cn/Movie/MovieComingNew.api?locationId=561

获取电影详情:
https://ticket-api-m.mtime.cn/movie/detail.api?locationId=561?movieId=电影id

561为武汉地区，全部地区id

使用到的GitHub项目：CloudReader😁