How to launch Activity from ListFragment?

A

Anatoly2015-08-08 05:52:57

Android

Anatoly, 2015-08-08 05:52:57

From the ListFragment, you need to launch the ViewActivity, in the line

intent.setClass(ScreenOne.this, ViewActivity.class);

gives an error message

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class ScreenOne extends ListFragment {

    String data[] = new String[] {
            .....
            .....
    };

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
                android.R.layout.simple_list_item_1, data);
        setListAdapter(adapter);
    }

    public void onListItemClick (ListView l, View v, int pos, long id) {
        super.onListItemClick(l, v, pos, id); {
            String itemname = new Integer(pos).toString();
            Intent intent = new Intent();
            intent.setClass(ScreenOne.this, ViewActivity.class);
            Bundle b = new Bundle();
            b.putString("defStrID", itemname);
            intent.putExtras(b);
            startActivity(intent);
        }
    }
}

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2 answer(s)

O

Oleg Gamega, 2015-08-08
@aam26071982

ScreenOne.this replace with getActivity()

A

Anatoly, 2015-08-08
@aam26071982

Now, when you click on the ListFragment item, the application closes with an error, from the ListActivity it works.
Here is the ViewActivity

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.webkit.WebView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import ru.aam.pril.R;

public class ViewActivity extends Activity {

    private WebView web;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.view);

        Bundle bundle = getIntent().getExtras();
        String itemname = "n" + bundle.getString("defStrID"); 
        Context context = getBaseContext(); 
        String text = readRawTextFile(context,
                getResources().getIdentifier(itemname, "raw", "ru.aam.pril"));

        web = (WebView) findViewById(R.id.webview);
        web.loadDataWithBaseURL("file:///android_res/raw/",
                "<!Doctype html><html><head><meta charset=utf-8></head><body>"
                        + text + "</body></html>", "text/html", "utf-8", ""); 
    }

    public static String readRawTextFile(Context ctx, int resId)
    {
        InputStream inputStream = ctx.getResources().openRawResource(resId);

        InputStreamReader inputreader = new InputStreamReader(inputStream);
        BufferedReader buffreader = new BufferedReader(inputreader);
        String line;
        StringBuilder text = new StringBuilder();

        try {
            while ((line = buffreader.readLine()) != null) {
                text.append(line);
                text.append('\n');
            }
        } catch (IOException e) {
            return null;
        }
        return text.toString();
    }

}