Question

import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v7.app.AppCompatActivity;


public class CatalogActivity extends AppCompatActivity implements 
LoaderManager.LoaderCallbacks<Cursor> {

PetCursorAdapter mCursorAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_catalog);

    // Setup FAB to open EditorActivity
    FloatingActionButton fab =  findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(CatalogActivity.this, EditorActivity.class);
            startActivity(intent);
        }
    });

    //Find the ListView which will be populated
    ListView petListView = findViewById(R.id.list_view);

    View emptyView = findViewById(R.id.empty_view);
    petListView.setEmptyView(emptyView);

    mCursorAdapter = new PetCursorAdapter(this, null);
    petListView.setAdapter(mCursorAdapter);

    //Kickoff loader
    getLoaderManager().initLoader(0, null, this);

}

显示第三个争论错误，我尝试将其强制转换为（android.app.LoaderManager.LoaderCallbacks），但仍然无法正常工作建议此处一些类似错误的帖子建议更改导入文件，但我也尝试过这样做，但仍然相同

getLoaderManager（）。initLoader（0，null，this）;错误的第三个参数“ this”输入

0 个答案: