package com.example.myapplication;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements View.OnClickListener {
private ContactDao mContactDao;
private Button mBtnadd;
private Button mBtnupdata;
private Button mBtnquery;
private Button mBtndelete;
private EditText mName;
private EditText mPhone;
private TextView mTv;
private String name="";
private String phone="";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContactDao = new ContactDao(this);
mName = (EditText) findViewById(R.id.name);
mPhone = (EditText) findViewById(R.id.phone);
mBtnadd =(Button) findViewById(R.id.btn_add);
mTv = (TextView) findViewById(R.id.tv);
mBtnupdata =(Button) findViewById(R.id.btn_updata);
mBtnquery =(Button) findViewById(R.id.btn_query);
mBtndelete =(Button) findViewById(R.id.btn_delete);
mBtnadd.setOnClickListener(this);
mBtnupdata.setOnClickListener(this);
mBtnquery.setOnClickListener(this);
mBtndelete.setOnClickListener(this);
mTv.setText(mContactDao.Select(name));
}
@Override
public void onClick(View v) {
name = mName.getText().toString();
phone = mPhone.getText().toString();
switch (v.getId()) {
case R.id.btn_add:
if(mContactDao.Insert(name, phone)){
Toast.makeText(this, "数据添加成功", 0).show();
mTv.setText(mContactDao.Select(name));
}else {
Toast.makeText(this, "数据添加失败", 0).show();
}
break;
case R.id.btn_query:
mTv.setText(mContactDao.Select(name));
break;
case R.id.btn_delete:
if(mContactDao.Delete(name)) {
Toast.makeText(this, "数据删除成功", 0).show();
mTv.setText(mContactDao.Select(name));
}else {
Toast.makeText(this, "数据删除失败", 0).show();
}
break;
case R.id.btn_updata:
if(mContactDao.Updata(name, phone)) {
Toast.makeText(this, "数据修改成功", 0).show();
mTv.setText(mContactDao.Select(name));
}else {
Toast.makeText(this, "数据修改失败", 0).show();
}
break;
}
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="com.example.myapplication.MainActivity" >
<LinearLayout
android:layout_marginTop="100dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="用 户"/>
<EditText
android:id="@+id/name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入用户姓名"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="电 话"/>
<EditText
android:id="@+id/phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入手机号码"/>
</LinearLayout>
<LinearLayout
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="@+id/btn_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="增加"/>
<Button
android:id="@+id/btn_updata"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="修改"/>
<Button
android:id="@+id/btn_query"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="查询"/>
<Button
android:id="@+id/btn_delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="删除"/>
</LinearLayout>
<TextView
android:id="@+id/tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<resources>
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>
