Android sqlite 数据库查询，插入，删除，更新demo<第3章>---插入

根据上面的简要，我们在listview显示界面点击option menu中的insert按钮之后就会跳转到 数据库数据插入编辑界面

此activity是Dialog主题，因其在Androidmenifest.xml文件配置时，theme = “@android:style/Theme.Dialog”

布局文件：add_userdata.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:padding="10px"
     >
     
     <LinearLayout 
         android:id="@+id/name_linearlayout"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
         android:padding="10px"
         >
         <TextView 
             android:id="@+id/insert_name"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="姓名:"
             />
         
         <EditText 
             android:id="@+id/input_name"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             /> 
     </LinearLayout>
     
     <LinearLayout 
         android:id="@+id/number_linearlayout"
         android:orientation="horizontal"
         android:layout_below="@id/name_linearlayout"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:padding="10px"
         >
         <TextView 
             android:id="@+id/insert_number"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="号码:"
             />
         
         <EditText 
             android:id="@+id/input_number"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             /> 
         
     </LinearLayout>
    
     <Button 
         android:id="@+id/insert_commit"
         android:layout_below="@id/number_linearlayout"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentRight="true"
         android:text="ADD"
       />
 </RelativeLayout>

activity 上代码：

package com.example.listviewdatabase;


 import android.app.Activity;
 import android.database.sqlite.SQLiteDatabase;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.EditText;


 public class InsertUserEditDialog extends Activity {


private static final String TAG = "ListViewActivity";
private Button commit = null;
private EditText input_name = null;
private EditText input_number = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.add_userdata);

commit = (Button) findViewById(R.id.insert_commit);

//get id of layout 
input_name = (EditText) findViewById(R.id.input_name);
input_number = (EditText) findViewById(R.id.input_number);
//ID of editview  is not used wrongly 
commit.setOnClickListener(new SetOnClickedListener());
}


class SetOnClickedListener implements OnClickListener{


@Override
public void onClick(View v) {
// TODO Auto-generated method stub

// create dbh
DataBaseHelper dbh = new DataBaseHelper(InsertUserEditDialog.this, null);


Log.i(TAG, "setOnClickListener --->  onClick 1111  dbh = "+dbh);

// get writable database
SQLiteDatabase db = dbh.getWritableDatabase();
Log.i(TAG, "setOnClickListener --->  onClick 2222");

//  get context of edit
String name = input_name.getText().toString();
String number = input_number.getText().toString();

if(db == null){
Log.i(TAG, "null");
}

Log.i(TAG, "SetOnClickedListener --->onClick  name = "+name+", number = "+number);


// insert
dbh.insertDataBase(db, name, number);

//close
db.close();
dbh.close();

// back to listview
InsertUserEditDialog.this.finish();
}
}
 }

此文章是本人学习笔记，能力有限，相互学习，欢迎点评，谢谢...