twitter - Twitterkit TWTRComposer崩溃

Question

我使用TwitterKit发送推文，使用此代码。

TWTRComposer *twitterComposer = [[TWTRComposer alloc] init];
[twitterComposer setText:string];
[twitterComposer setURL:[NSURL URLWithString:url]];
[twitterComposer setImage:image];
[twitterComposer showFromViewController:viewController completion:^(TWTRComposerResult result) {
  if (result == TWTRComposerResultDone) {

  }else {

}
}];

但是代码崩溃

[twitterComposer showFromViewController:viewController completion:^(TWTRComposerResult result) {

我有Twitter登录 session

使用SLComposerViewController一样崩溃

崩溃信息:
应用程序尝试在目标<>上显示一个零模态 View Controller

在iOS 10.0.2中

我在 https://twittercommunity.com中找不到任何答案

Answer 1

在调用TWTRComposer之前检查 session 。否则应用程序将崩溃。
尝试这个:

[[Twitter sharedInstance] logInWithCompletion:^(TWTRSession * _Nullable session, NSError * _Nullable error) {
    if (session) {
        TWTRComposer *composer = [[TWTRComposer alloc] init];
        [composer setText:@"just setting up my Fabric"];
        [composer setImage:[UIImage imageNamed:@"fabric"]];
        [composer setURL:[NSURL URLWithString:@"http://www.toshow.com"]];
        [composer showFromViewController:[UIApplication sharedApplication].keyWindow.rootViewController completion:^(TWTRComposerResult result) {

        }];
    } else {
        [CustomToast makeToast:@"get session failed"];
    }
}];