Android待办事项：我想实现点击已经添加的事项，该事项的文字可以读取到输入的EditText上以便重新编辑。

Question

package com.example.schedule;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.SimpleAdapter;
import android.widget.SimpleCursorAdapter;

public class MainActivity extends ListActivity {
	private SimpleCursorAdapter adapter;
	private EditText etDate,etItem;
	private Button btnAdd,btnUpdate;
	private Db db;
	private SQLiteDatabase dbRead,dbWrite;
	private OnItemClickListener ListViewItemClickListener = new OnItemClickListener() {

		@Override
		public void onItemClick(AdapterView<?> arg0, View arg1, final int position,
				long arg3) {
			// TODO Auto-generated method stub
	        btnUpdate.setOnClickListener(new View.OnClickListener() {
				
				@Override
				public void onClick(View v) {
					// TODO Auto-generated method stub
					Cursor c = adapter.getCursor();
					c.moveToPosition(position);
					int itemId = c.getInt(c.getColumnIndex("_id"));
					ContentValues cv = new ContentValues();
					cv.put("date", etDate.getText().toString());
					cv.put("item", etItem.getText().toString());
					dbWrite.update("user", cv,"_id=?", new String[]{itemId+""});
					refresListview();
				}
			});

		}
		
	};
	private OnItemLongClickListener ListViewItemLongClickListener = new OnItemLongClickListener() {

		@Override
		public boolean onItemLongClick(AdapterView<?> parent, View v,
			final	int position, long id) {
			// TODO Auto-generated method stub
			new AlertDialog.Builder(MainActivity.this)
			.setTitle("提醒").setMessage("您确定要删除该项吗")
			.setNegativeButton("取消", null)
			.setPositiveButton("确定", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface arg0, int arg1) {
					// TODO Auto-generated method stub
					Cursor c = adapter.getCursor();
					c.moveToPosition(position);
					int itemId = c.getInt(c.getColumnIndex("_id"));
					dbWrite.delete("user", "_id=?", new String[]{itemId+""});
					refresListview();
				}
			}).show();

			return true;
		}
	};
	

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        db = new Db(this);
        dbRead =db.getReadableDatabase();
        dbWrite =db.getWritableDatabase();
        
        adapter = new SimpleCursorAdapter(this, R.layout.user_list_cell, null,new String[]{"date","item"}, new int[]{R.id.tvDate,R.id.tvItem});
        setListAdapter(adapter);
        
        refresListview();
        
        getListView().setOnItemLongClickListener(ListViewItemLongClickListener);
        getListView().setOnItemClickListener(ListViewItemClickListener);
        
        etDate = (EditText) findViewById(R.id.etDate);
        etItem = (EditText) findViewById(R.id.etItem);
        btnAdd = (Button) findViewById(R.id.btnAdd);
        btnUpdate = (Button) findViewById(R.id.btnUpdate);
        btnAdd.setOnClickListener(new OnClickListener(
        		) {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				ContentValues cv = new ContentValues();
				cv.put("date", etDate.getText().toString());
				cv.put("item", etItem.getText().toString());
				
				dbWrite.insert("user", null, cv);
				
				refresListview();
				
			}
		});

        
        
        
    }
    private void refresListview(){
    	Cursor c = dbRead.query("user", null, null, null, null, null, null);
    	adapter.changeCursor(c);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
}

Answer 1

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

Answer 2

点击后首先获取控件上的数据，之后set到edittext上，是这个意思吗？  (上miss)