Android 无法更新SQLite数据库中的行

我是android开发的新手。我正在尝试更新数据库的行，但每次使用db.update（database_TABLE，args，KEY_ROWID+“=”+ROWID，null）时，我都会得到0作为回报

从以下类调用上述类的更新方法

package com.multi.xxxx;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.util.Log;

public class DatabaseUpdateActivity extends Activity {

    EditText edit1,edit2,edit3;
    Button update;
    Button delete;

    public static  long rowID;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_contacts);
         final DBAdapter db = new DBAdapter(this);
         db.open();
         edit1=(EditText)findViewById(R.id.et_name);
         edit2=(EditText)findViewById(R.id.et_mobile_phone);
         edit3=(EditText)findViewById(R.id.et_work_email);
         update = (Button) findViewById(R.id.btn_add);
         delete = (Button) findViewById(R.id.btn_contacts);
        update.setText("Update");
        delete.setText("Delete");
        int id = (int)rowID;

        //Cursor c = db.getTitle(rowID);
        Cursor c = db.getAllTitles();

        c.moveToFirst();

        if (c != null && c.moveToFirst()) Log.d("cursor = ", c.getString(c.getColumnIndex(DBAdapter.KEY_ISBN)));


        if (c != null)
        {
            c.moveToPosition(id);

            edit1.setText(c.getString(c.getColumnIndex(DBAdapter.KEY_ISBN)));
            edit2.setText(c.getString(c.getColumnIndex(DBAdapter.KEY_TITLE)));
            edit3.setText(c.getString(c.getColumnIndex(DBAdapter.KEY_PUBLISHER)));
        }



        update.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                 String editText1=edit1.getText().toString();
                    String editText2=edit2.getText().toString();
                    String editText3=edit3.getText().toString();
                    //long result=db.insertTitle(editText1, editText2, editText3);
                    //long result;
                    if ( editText2.isEmpty() == false)
                    {
                        boolean isUpdated = db.updateTitle(rowID,editText1,editText2, editText3);
                        db.updateTitle(rowID,editText1,editText2, editText3);
                        if (isUpdated == true)
                        {
                            Toast.makeText(DatabaseUpdateActivity.this,"DataUpdated",Toast.LENGTH_LONG).show();
                            edit1.setText("");
                            edit2.setText("");
                            edit3.setText("");
                            finish();
                        }

                    }
                    else
                        Toast.makeText(DatabaseUpdateActivity.this,"Fill Phone Number",Toast.LENGTH_LONG).show();

            }
        });

        delete.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                boolean isDeleted = db.deleteTitle(rowID);
                if (isDeleted == true)
                {
                    Toast.makeText(DatabaseUpdateActivity.this,"DataDeleted",Toast.LENGTH_LONG).show();
                    finish();

                }

            }
        });
    }

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

    public  void setRowId(long id) {

        rowID = id;
    }

}

---

我搜索了很多，但找不到满意的答案。

检查此代码。这是更新功能

    public void updateevent(String selecteditemid)
{

        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues args = new ContentValues();
        args.put(KEY_STATUS, "yes");
        db.update(TABLE_EVENTS, args, KEY_ID + "=" + selecteditemid, null);

}

把它叫做

updateevent("1");

---

它将更新id=1的行。

我们需要看到更多。在哪里调用updateTitle（）？Logcat中有任何错误吗？@Opiatefuchs如何在现有帖子中添加更多代码。我第一次使用堆栈溢出。复制和粘贴，但注意格式化。在答案栏的右上角有一个问号。按此键，然后单击其中一个链接，您将看到一些基本信息。。。

updateevent("1");