尝试从intent

时间：2016-06-18 10:46:07

标签： android android-fragments android-intent

所以我正在尝试为更大的Android应用程序创建一个联系人管理器模块，我在ViewPager中使用Fragment来显示ListView中的联系人。我现在想要的是用户能够通过长按一个项目并选择＆＃34;编辑＆＃34;来编辑记录。来自List AlertDialog。问题是，我希望新的ContactEdit活动使表中列的所有字段都填充了以前Fragment的ListView中longClicked的特定记录的信息。我使用putExtra方法在我用来打开Activity的intent中放入记录的Row ID。但另一方面，当我使用getIntent（）。getExtras（）。getInt（）方法时，我返回了一个android.content.res.Resources $ NotFoundException。请查看相关代码和错误日志，并尝试在这里帮助学习者..

ContactList.class 

package com.example.nikhil.test1;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;



public class ContactList extends Fragment {
    private SimpleCursorAdapter dataAdapter;
    private ContactsAdapter dbHelper;

    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        ViewGroup rootView = (ViewGroup) inflater.inflate(
                R.layout.fragment_item_list, container, false);
        dbHelper = new ContactsAdapter(this.getActivity());
        dbHelper.open();
        Cursor cursor = dbHelper.getAllFriends();
        String[] columns = new String[] {
                ContactsAdapter.KEY_NAME, ContactsAdapter.KEY_Phone
        };
        int[] to = new int[] {
                R.id.name, R.id.phonenumber
        };
        dataAdapter = new SimpleCursorAdapter(
                this.getActivity(), R.layout.contact_row,
                cursor,
                columns,
                to,
                0);
        ListView listView = (ListView) rootView.findViewById(R.id.list);
        listView.setAdapter(dataAdapter);
        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {
                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                builder.setTitle("Pick an action");
                builder.setItems(new String[]{"Edit","Delete","Activate Call Forwarding"}, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        if(which==0){
                        Intent i = new Intent(getActivity(), ContactEdit.class);
                        i.putExtra("RowID",position);
                        startActivity(i);
                        }

                    }
                });
                AlertDialog alertDialog=builder.create();
                alertDialog.show();
                return true;
            }
        });
        return rootView;
    }


}

ContactEdit.class 

package com.example.nikhil.test1;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
import android.widget.EditText;


public class ContactEdit extends Activity {
    ContactsAdapter dbHelper;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_contact_edit);
        dbHelper = new ContactsAdapter(this);
        dbHelper.open();


        if(getIntent() != null) {
            Bundle extras = getIntent().getExtras();
            EditText _Name = (EditText) findViewById(R.id.edittextName);
            _Name.setText(extras.getInt("RowID"));
           /* int rowId = extras != null ? extras.getInt("RowID") : -1;
            Cursor cursor = dbHelper.getFriend(rowId);
            String name = cursor.getString(1);
            String mobile = cursor.getString(2);
            String home = cursor.getString(3);
            String address = cursor.getString(4);

            EditText _Name = (EditText) findViewById(R.id.edittextName);
            _Name.setText(name);
            EditText _Mobile = (EditText) findViewById(R.id.edittextMobile);
            _Mobile.setText(mobile);
            EditText _Home = (EditText) findViewById(R.id.edittextHome);
            _Home.setText(home);
            EditText _Address = (EditText) findViewById(R.id.edittextAddress);
            _Address.setText(address);*/
        }
        else
        {
            EditText _Name = (EditText) findViewById(R.id.edittextName);
            _Name.setText(" ");
            EditText _Mobile = (EditText) findViewById(R.id.edittextMobile);
            _Mobile.setText(" ");
            EditText _Home = (EditText) findViewById(R.id.edittextHome);
            _Home.setText(" ");
            EditText _Address = (EditText) findViewById(R.id.edittextAddress);
            _Address.setText(" ");
        }


    }



    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == android.R.id.home) {

            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

我将实际的目标代码放在注释中，这样我就可以看到我的Activity是否能够从intent中提取RowID logat错误日志 

06-18 15:49:45.676  18965-18965/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.nikhil.test1, PID: 18965
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.nikhil.test1/com.example.nikhil.test1.ContactEdit}: android.content.res.Resources$NotFoundException: String resource ID #0x0
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2335)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2397)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1310)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5268)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:902)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:697)
     Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x0
            at android.content.res.Resources.getText(Resources.java:305)
            at android.widget.TextView.setText(TextView.java:4152)
            at com.example.nikhil.test1.ContactEdit.onCreate(ContactEdit.java:23)
            at android.app.Activity.performCreate(Activity.java:6033)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2288)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2397)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1310)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5268)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:902)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:697)

1 个答案:

答案 0 :(得分：1)

此行可能导致错误：

    while (!stopProgram)
    {
        String line = "";
        System.out.print("> ");
        System.out.flush();
        line = keyboard.next();

        System.out.println(line);

        if ("close".equals(line))
        {
            entry.stop = true;
            stopProgram = true;
        }
    }

将其替换为：

printf()

刚添加“”将整数转换为String。试试并告诉我们。

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