Flutter 开发日常记录

- 图片加载失败

图片资源命名中存在中文会导致加载失败

- List.asMap().map()错误

List temp = ["aa", "bb", "cc"];
temp.asMap().map((k, v){
  print("${k}:${v}");
});

flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
flutter: The following NoSuchMethodError was thrown building Builder:
flutter: The getter 'key' was called on null.
flutter: Receiver: null
flutter: Tried calling: key

map不能直接map出key/value来

List temp = ["aa", "bb", "cc"];
temp.asMap().keys.map((v){
  print("${v}");
});

- 不认设备，或者进程占用，无法启动程序

上次设备没有正常关闭，直接拔掉手机有可能导致进程没有关掉，flutter还在lock，插入别的手机导致无法识别
解决办法：

• 插回原来的手机运行
• 重启，删/flutter/bin/cache/lockfile