Android高级控件小练习

package com.example.week3_lihuihui;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.example.week3_day5_homework.db.MySqliteHelper;

import android.os.Bundle;
import android.app.Activity;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v4.app.NotificationCompat;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

private Button btn;//声明编辑按钮
private List<Map<String, Object>> list;//存放查询数据的list
private MySqliteHelper helper;//声明数据库
private ListView lv;
//存放用户信息
private String name;
private String address;
private String love;
//声明适配器
private MyAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);//加载布局
btn = (Button) findViewById(R.id.btn);
lv = (ListView) findViewById(R.id.lv);
//实例化数据库
helper = new MySqliteHelper(MainActivity.this);
//得到数据
getDate();
//实例化是适配器
adapter = new MyAdapter();
//为lv绑定适配器
lv.setAdapter(adapter);
//为lv绑定上下文菜单
registerForContextMenu(lv);
/**
* 编辑按钮监听器
*/
btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(),
SecondActivity.class);
startActivity(intent);
}
});
}

/**
* 自定义适配器
*/
public class MyAdapter extends BaseAdapter {

@Override
public int getCount() {

return list.size();
}

@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return list.get(arg0);
}

@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}

@Override
public View getView(int arg0, View view, ViewGroup arg2) {
View v = LayoutInflater.from(getApplicationContext()).inflate(
R.layout.item, null);
TextView tv1 = (TextView) v.findViewById(R.id.TextView1);
TextView tv2 = (TextView) v.findViewById(R.id.TextView2);
TextView tv3 = (TextView) v.findViewById(R.id.TextView3);
String name = list.get(arg0).get("name").toString();
String address = list.get(arg0).get("address").toString();
String love = list.get(arg0).get("love").toString();
tv1.setText(name);
tv2.setText(love);
tv3.setText(address);
return v;
}
}

/**
* 从数据库中查询数据
*/
protected void getDate() {
list = new ArrayList<Map<String, Object>>();
SQLiteDatabase db = helper.getReadableDatabase();
String sql = "select * from person";
Cursor cursor = db.rawQuery(sql, null);
while (cursor.moveToNext()) {
Map<String, Object> map = new HashMap<String, Object>();
name = cursor.getString(cursor.getColumnIndex("name"));
address = cursor.getString(cursor.getColumnIndex("address"));
love = cursor.getString(cursor.getColumnIndex("love"));
map.put("name", name);
map.put("address", address);
map.put("love", love);
list.add(map);

}
db.close();

}

/**
* 实时更新数据
*/
@Override
protected void onRestart() {
getDate();
lv.setAdapter(new MyAdapter());
super.onRestart();
}

/**
* 菜单
*/
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {

super.onCreateContextMenu(menu, v, menuInfo);
getMenuInflater().inflate(R.menu.main, menu);
}

/**
* 长点击ListView时弹出上下文菜单
*/
@Override
public boolean onContextItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
/*
* 删除
*/
case R.id.delete:
// 从item里 获取绑定的listView的一些信息
AdapterContextMenuInfo contextMenuInfo = (AdapterContextMenuInfo) item
.getMenuInfo();

list.remove(contextMenuInfo.position);
SQLiteDatabase db = helper.getReadableDatabase();
String sql = "delete from person where name='" + name + "'";
db.execSQL(sql);
Toast.makeText(MainActivity.this, "删除", 0).show();
onRestart();
break;
/**
* 分享
*/
case R.id.share:
/**
* 监听长点击事件,得到长点击信息
*/
lv.setOnItemLongClickListener(new OnItemLongClickListener() {

@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
name = list.get(arg2).get("name").toString();
address = list.get(arg2).get("address").toString();
love = list.get(arg2).get("love").toString();
return false;
}
});
NotificationCompat.Builder builder = new NotificationCompat.Builder(
MainActivity.this);
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setContentTitle("标题");
builder.setContentText("内容");
Intent intent = new Intent(MainActivity.this, Message.class);
intent.putExtra("name", name);
intent.putExtra("address", address);
intent.putExtra("love", love);
PendingIntent intent2 = PendingIntent.getActivity(
MainActivity.this, 1, intent, PendingIntent.FLAG_ONE_SHOT);
builder.setContentIntent(intent2);
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.notify(1, builder.build());
break;

default:
break;
}
return super.onContextItemSelected(item);
}
}

package com.example.week3_lihuihui;

import com.example.week3_day5_homework.db.MySqliteHelper;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;

public class SecondActivity extends Activity implements OnClickListener {

private Button finish;
private EditText et_name, et_add;
private CheckBox cb1, cb2, cb3;
private MySqliteHelper helper;
private String intersing1 = "";
private String intersing2 = "";
private String intersing3 = "";
private String name;
private String address;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
finish = (Button) findViewById(R.id.finish);
et_add = (EditText) findViewById(R.id.et_add);
et_name = (EditText) findViewById(R.id.et_name);
cb1 = (CheckBox) findViewById(R.id.cb1);
cb2 = (CheckBox) findViewById(R.id.cb2);
cb3 = (CheckBox) findViewById(R.id.cb3);

helper = new MySqliteHelper(SecondActivity.this);
/**
* 兴趣监听器
*/
// 兴趣爱好选择监听器
cb1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {

if (arg1) {
intersing1 = cb1.getText().toString();
} else {
intersing1 = "";
}

}
});
cb2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {

if (arg1) {
intersing2 = cb2.getText().toString();
} else {
intersing2 = "";
}

}
});

cb3.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
if (arg1) {
intersing3 = cb3.getText().toString();
} else {
intersing3 = "";
}
}
});

finish.setOnClickListener(this);

}

@Override
public void onClick(View arg0) {
dialog();

}

/**
* dialog对话框
*/
public void dialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(
SecondActivity.this);
builder.setTitle("标题");
builder.setMessage("确认提交吗?");
builder.setPositiveButton("确认",
new android.content.DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
name = et_name.getText().toString().trim();
address = et_add.getText().toString().trim();
SQLiteDatabase db = helper.getReadableDatabase();
String sql = "insert into person values('" + name
+ "','" + address + "','" + intersing1
+ intersing2 + intersing3 + "')";
db.execSQL(sql);
finish();
}
});

builder.setNegativeButton("取消",
new android.content.DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
builder.create();
builder.show();
}
}

package com.example.week3_day5_homework.db;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

/**
* 1 建立一个MySqliteHelper类,继承SQLiteOpenHelper,并实现方法
* 2 重写方法
*/
public class MySqliteHelper extends SQLiteOpenHelper {
// 数据库名称
private static String NAME = "info.db";
// 版本号
private static int VERSION = 1;

/**
* 构造方法
*
* @param context
*            :上下文
* @param name
*            :数据库名称
* @param factory
*            :游标工厂
* @param version
*            :数据库版本
*/
public MySqliteHelper(Context context, String name, CursorFactory factory,
int version) {
super(context, name, factory, version);
}

// 改写构造方法
public MySqliteHelper(Context context) {
super(context, NAME, null, VERSION);
}

/**
* 数据库第一次创建时,回调此方法
*/
@Override
public void onCreate(SQLiteDatabase db) {
// 创建数据库表
String sql = "create table person(name varchar(60),address varchar(26),love varchar(20))";
// 执行数据库语句
db.execSQL(sql);
}

/**
* 数据库升级 数据版本发生改变时调用,newVersion>oldVersion
*/
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if(newVersion>oldVersion){
Log.i("===onUpgrade===", "数据库版本升级");
}
}

/**
* 数据库版本降级,只有数据库版本发生重大错误时,数据版本发生改变时调用,newVersion<oldVersion
*/
@Override
public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
super.onDowngrade(db, oldVersion, newVersion);
if(newVersion<oldVersion){
Log.i("===onDowngrade===", "数据库版本降级");
}
}
/**
* 每次打开数据库时调用,主要是验证数据库是否打开
*/
@Override
public void onOpen(SQLiteDatabase db) {
super.onOpen(db);
Log.i("===onOpen===", "数据库打开");
}

}

package com.example.week3_lihuihui;

import android.app.Activity;
import android.app.NotificationManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class Message extends Activity {

private TextView tv1, tv2, tv3;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.message);
tv1 = (TextView) findViewById(R.id.TextView1);
tv2 = (TextView) findViewById(R.id.TextView2);
tv3 = (TextView) findViewById(R.id.TextView3);

Intent intent = getIntent();
String name = intent.getStringExtra("name");
String address = intent.getStringExtra("address");
String love = intent.getStringExtra("love");

tv1.setText(name);
tv2.setText(love);
tv3.setText(address);
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.cancelAll();// 将所有的通知全部取消

}
}

<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:orientation="vertical"
>

<LinearLayout
android:id="@+id/l1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<TextView
android:id="@+id/vt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="130dp"
android:text="主页"
android:textSize="19sp" />

<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="90dp"
android:text="编辑" />
</LinearLayout>

<LinearLayout
android:id="@+id/l1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<ListView
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="match_parent"

/>

</LinearLayout>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>

<LinearLayout
android:id="@+id/LinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<TextView
android:id="@+id/TextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="130dp"
android:text="信息"
android:textSize="19sp" />

<Button
android:id="@+id/finish"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="90dp"
android:text="完成" />
</LinearLayout>

<LinearLayout
android:id="@+id/LinearLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="19sp"
android:text="姓名"/>
<EditText
android:id="@+id/et_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<LinearLayout
android:id="@+id/LinearLayout3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<TextView
android:id="@+id/add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="19sp"
android:text="住址"/>
<EditText
android:id="@+id/et_add"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<LinearLayout
android:id="@+id/LinearLayout4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/inter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="19sp"
android:text="爱好"
/>
<CheckBox
android:id="@+id/cb1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="吃饭"
/>
<CheckBox
android:id="@+id/cb2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="睡觉"
/>
<CheckBox
android:id="@+id/cb3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="听歌"
/>
</LinearLayout>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>

<RelativeLayout
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="74dp" >

<TextView
android:id="@+id/TextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:textColor="#ff0000"
/>
<TextView
android:id="@+id/TextView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/TextView1"
android:textSize="18sp"
android:textColor="#ff0000"

/>

<TextView
android:id="@+id/TextView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="24dp"
android:textSize="18sp"
android:textColor="#ff0000"
/>

</RelativeLayout>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<TextView
android:id="@+id/tv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="内容"
android:gravity="center"
android:textSize="18sp"
android:textColor="#ff0000"/>

<RelativeLayout
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="74dp" >

<TextView
android:id="@+id/TextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:textColor="#ff0000"
/>
<TextView
android:id="@+id/TextView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/TextView1"
android:textSize="18sp"
android:textColor="#ff0000"

/>

<TextView
android:id="@+id/TextView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="24dp"
android:textSize="18sp"
android:textColor="#ff0000"
/>

</RelativeLayout>

</LinearLayout>

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<item
android:id="@+id/delete"
android:orderInCategory="100"
android:showAsAction="never"
android:title="删除"/>
<item
android:id="@+id/share"
android:orderInCategory="100"
android:showAsAction="never"
android:title="分享"/>

</menu>