小编JMP*_*JMP的帖子

所以我使用ImageGetter来显示JSON博客文章中的图像.我在日志中获取了正确的源,但是当URL达到setBounds时URL会发生变化.有任何想法吗？

码:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_blog_view);

    Intent intent = getIntent();
    Uri blogUri = intent.getData();
    mPost = blogUri.toString();
    mUrl = getIntent().getStringExtra("mUrl");

    TextView textView = (TextView) findViewById(R.id.scrollView1);
    textView.setText(Html.fromHtml(mPost, imgGetter, null));
}

private ImageGetter imgGetter = new ImageGetter(){
    @Override
    public Drawable getDrawable(String source){
         Drawable drawable = Drawable.createFromPath(source);
        try {
            drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        }catch (NullPointerException e){
            logException(e);
        }
        return drawable;
    }
};

尝试前的"来源"是

http://www.domain.com/images_blog/feature.png

但在捕获中错误是:

无法解码流:

java.io.FileNotFoundException: /http:/www.domain.com/images_blog/feature.png : open failed: ENOENT (No such file or directory)

使用 BLoC 进行 Flutter 新手。基于搜索模板构建，希望在items应用程序加载时加载数据 ()，而不是在状态更改时加载。

该方法getCrystals()在搜索意图时返回正确的数据.isEmpty，但如何在应用程序加载时完成呢？

crystal_repo.dart

abstract class CrystalRepo {
    Future<BuiltList<Crystal>> getCrystals();

    Future<BuiltList<Crystal>> searchCrystal({
        @required String query,
        int startIndex: 0,
    });
}

crystal_repo_impl.dart

class CrystalRepoImpl implements CrystalRepo {
    static const _timeoutInMilliseconds = 120000; // 2 minutes
    final Map<String, Tuple2<int, CrystalResponse>> _cached = {};

    ///
    final CrystalApi _api;
    final Mappers _mappers;

    CrystalRepoImpl(this._api, this._mappers);

    @override
    Future<BuiltList<Crystal>> searchCrystal({
        String query,
        int startIndex = 0,
    }) async {
        assert(query != null);
        final crystalsResponse = await _api.searchCrystal( …