以下是我从JSON回复中获得的字典
text1 = [body["definitions"][0]["text"],
body["definitions"][1]["text"]]
我正在尝试访问前两个文本'使用此代码语句:
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity
{
private StaggeredGridLayoutManager staggeredGridLayoutManager;
MyAdapter myAdapter;
List<ItemData> grid_view_item = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
//call the LoadImage
new LoadImage().execute();
myAdapter = new MyAdapter(MainActivity.this, grid_view_item);
recyclerView.setAdapter(myAdapter);
}
我得到了我需要的字符串。
但实际问题是,当我在覆盆子Pi 2上运行相同的代码时,我收到以下错误
TypeError:字符串索引必须是整数,而不是str
任何帮助都将不胜感激。
答案 0 :(得分:0)
body["definitions"]
返回一个字符串,说“你好”,所以如果你写:
body["definitions"]["0"]
相当于:
"hello"["0"]
产生错误:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: string indices must be integers
但如果你写:
"hello"[0]
你得到:
'h'