public class Items {
????private ?int img_id;
????private ?String name;
????public int getImg_id() {
????????return img_id;
????}
????public void setImg_id(int img_id) {
????????this.img_id = img_id;
????}
????public String getName() {
????????return name;
????}
????public void setName(String name) {
????????this.name = name;
????}
????public String getExplain() {
????????return explain;
????}
????public void setExplain(String explain) {
????????this.explain = explain;
????}
????private ?String explain;
}
二、
[if !supportLists]1.?[endif]编写一个程序，可以显示实时时间，按返回时有弹出对话框提示是否退出程序，按确认后退出程序。
[if !supportLists]2.?[endif]编写一个程序，按下按钮后间隔10秒自动弹出一个Toast显示当前时间，按返回时有弹出对话框提示是否退出程序，按确认后退出程序。
public?class?MainActivity extends?Activity implements?OnClickListener{
private?AnalogClock clock;
private?Button btn,btn2;
private?DateFormat df;
public?void?onClick(View v) {
// TODO?Auto-generated method stub
switch?(v.getId()) {
case?R.id.button1:
new?AlertDialog.Builder(MainActivity.this)
.setTitle("退出提醒").setMessage("是否退出程序！")
.setNegativeButton("否", null)
.setPositiveButton("确定", new?DialogInterface.OnClickListener() { ?
????????????????public?void?onClick(DialogInterface dialog, int?whichButton) { ?
????????????????????finish(); ???????????} ????}).show(); break;
case?R.id.button2:
Date curDate = ?new?Date(System.currentTimeMillis());
df?= new?SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dfs = ?df.format(curDate);
new?AlertDialog.Builder(MainActivity.this)
.setTitle("时间").setMessage(dfs)
.setPositiveButton("返回", new?DialogInterface.OnClickListener() { ?
????????????????public?void?onClick(DialogInterface dialog, int?whichButton) { ?
???????????????? new?AlertDialog.Builder(MainActivity.this)
???????? .setTitle("退出提醒").setMessage("是否退出程序！")
???????? .setNegativeButton("否", null)
???????? .setPositiveButton("确定", new?DialogInterface.OnClickListener() { ?
????????????????????????public?void?onClick(DialogInterface dialog, int?whichButton) { ?
????????????????????????????finish(); ?
????????????????????????} ?????}).show(); ?} ??}).show(); break;
default:
break;}}
[if !supportLists]3.?[endif]编写一个程序，实现一个登录界面，在登录界面中包含一个复选按钮“记住我”，选择时保存用户名和密码，否则不保存，打开登录界面时，如果有保存的用户名和密码，则将保存的用户名和密码显示到对应控件中。
public?void?onClick(View v) {
// TODO?Auto-generated method stub
boolean?chk = ck.isChecked();
if(chk){
namet.setText("用户名:"+String.valueOf(name.getText().toString()));
pwdt.setText("密码："+String.valueOf(pwd.getText().toString()));
new?AlertDialog.Builder(MainActivity.this)
.setMessage("登陆记住密码 ").setPositiveButton("确认 ", null).show();
}
else{
new?AlertDialog.Builder(MainActivity.this)
.setMessage("登陆未记住密码").setPositiveButton("确认", null).show(); }
[if !supportLists]4.?[endif]编写一个程序，实现一个日记功能，将写好的日记保存到文件Diary中，点击浏览的时候查看日记内容。
public?void?onClick(View v) {
// TODO?Auto-generated method stub
String neirong = et.getText().toString();
String dizi = "riji.text";
switch?(v.getId()) {
case?R.id.button1:
?FileOutputStream out = null;
try?{
out = context.openFileOutput(dizi, Context.MODE_PRIVATE);
out.write(neirong.getBytes("UTF-8"));
} catch?(Exception e) {
// TODO?Auto-generated catch block
e.printStackTrace();
}
finally{ ?
????????????????try?{ ?
????????????????????out.close(); ?
????????????????} catch?(Exception e) { ?
????????????????????e.printStackTrace(); ?
????????????????} ?
????????????}
break;
?????????case?R.id.button2:
?????????????FileInputStream in = null; ?
?????????????ByteArrayOutputStream bout = null; ?
?????????????byte[]buf = new?byte[1024]; ?
?????????????bout = new?ByteArrayOutputStream(); ?
?????????????int?length = 0; ?
?????????????try?{ ?
?????????????????in = context.openFileInput(dizi); //获得输入流 ?
?????????????????while((length=in.read(buf))!=-1){ ?
?????????????????????bout.write(buf,0,length); ?
?????????????????} ?
?????????????????byte[] content = bout.toByteArray(); ?
?????????????????tv.setText(new?String(content,"UTF-8")); //设置文本框为读取的内容 ?
?????????????} catch?(Exception e) { ?
?????????????????e.printStackTrace(); ?
?????????????} ?
?????????????tv.invalidate(); //刷新屏幕 ?
?????????????try{ ?
?????????????????in.close(); ?
?????????????????bout.close(); ?
?????????????} ?
?????????????catch(Exception e){} ?
break;
[if !supportLists]5.?[endif]编写一个程序，实现图片的浏览，向左滑动显示下一张图片，向右滑动显示上一张图片。
package com.example.img;
?
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
?
public class MainActivity extends Activity implements OnTouchListener{
???int caozuo = 0;
???float x1 = 0;
???float x2 = 0;
???public ImageView image;
????@Override
????protected void onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);
????????image = (ImageView)findViewById(R.id.imageView1);
????}
?
?
????@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;
????}
?
?
?
?
?
?
?
@Override
public boolean onTouch(View v, MotionEvent event) {
????
if(event.getAction() == MotionEvent.ACTION_DOWN)
x1 = event.getX();
if(event.getAction() == MotionEvent.ACTION_UP){
x2 = event.getX();
if(x1-x2>=5){
caozuo =caozuo+1;
caozuo = caozuo%8;
if(caozuo==0)
{
caozuo ++;
}
image.setImageResource(R.drawable.a_1+caozuo);
}
if(x2-x1>=5){
caozuo =caozuo-1;
if(caozuo<=0){
caozuo = 7;
}
image.setImageResource(R.drawable.a_1+caozuo);
}
}
return false;
}
????
}//注意要添加照片进入文件中
[if !supportLists]6.?[endif]编写一个程序，通过Handler和Thread或Runnable实现以10秒时间显示完进度条进度。
private?ProgressBar progress;
private?int?max?= 100,current?= 0,step?= 0;
????@Override
????protected?void?onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);
????????progress?= (ProgressBar)findViewById(R.id.progressBar3);
????????progress.setMax(max);
????????progress.setProgress(0);
????????step?= max/10;
????????new?Thread(new?Runnable() {
???????? int?i?=1;
@Override
public?void?run() {
// TODO?Auto-generated method stub
try?{
while?(max!=progress.getProgress()) {
???Log.i("次数", i?+ ""); ?
???????????????????????i++; ?
???????????????????????progress.setProgress(current?+ step); ?
???????????????????????current?= progress.getProgress(); ?
???????????????????????Thread.sleep(1000);
}
} catch?(Exception e) {
// TODO: handle exception
}}
}).start();
????}
[if !supportLists]7.?[endif]编写一个程序，通过AsyncTask实现以20秒时间显示完进度条进度。
package com.example.jindutiao20s;
import android.os.AsyncTask;
import android.os.Bundle;
. import android.app.Activity;. import android.view.Menu;
import android.widget.ProgressBar;
import android.widget.TextView;.
. public class MainActivity extends Activity {.
private ProgressBar myBar;
private TextView textView;
????@Override
. ????protected void onCreate(Bundle savedInstanceState) {
. ????????super.onCreate(savedInstanceState); ?????????setContentView(R.layout.activity_main);
????????myBar = (ProgressBar)findViewById(R.id.progressBar1);
???????????textView = (TextView)findViewById(R.id.textView1);
???????????MyAsync my = new MyAsync();
????????my.execute();
????}
????class MyAsync extends AsyncTask{
???? int index = 0;
???? @Override
. ???? protected void onPreExecute() {
. ???? // TODO Auto-generated method stub
???? super.onPreExecute();
. ???? textView.setText("0%");
??? }
protected Integer doInBackground(Void... params) {. ????????????
try {
for(int i =0;i<=20;i++){
Thread.sleep(1000);
index ++;
publishProgress(index);
}
. } catch (Exception e) {
// TODO: handle exception
}
return null;
}
. @Override
. protected void onProgressUpdate(Integer... values) {
// TODO Auto-generated method stub
. super.onProgressUpdate(values);
. textView.setText(values[0]*5+"%");
. myBar.setProgress(index*5);
. }
. ???? @Override
. ???? protected void onPostExecute(Integer result) {
. ???? // TODO Auto-generated method stub
. ???? super.onPostExecute(result);
. ???? }
. ????
. ????
. ????}
.
.
. ????@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;. ????}
}
[if !supportLists]8.?[endif]编写一个程序，手动绑定列表控件ListView，每条记录中包含图片，名称和描述。
两个布局布局1 ?listview布局二 对一个item进行布局 图片文字
三类主类调用该
package com.example.bangding;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ListView;
public class MainActivity extends Activity {
private List list;
private ListView listview;
????private ?MyAdapter adapter;
????@Override
????protected void onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);
????????list = new ArrayList();
????????listview = (ListView)findViewById(R.id.listView1);
????????init();
????}
????private void init()
????{
????????for (int i =1;i<=10;i++)
????????{
???????? Items items = new Items();
????????????items.setImg_id(R.drawable.a_1+i);
items.setName("名字:" + i);
items.setExplain("解释: "+ i);
????????????list.add(items);
????????????adapter = new MyAdapter(MainActivity.this,list);
????????????listview.setAdapter(adapter);
????????}
????}
????@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;
????}
}
Items类 声明 ??
package?com.example.bangding;
public?class?Items {
???public?int?getImg_id() {
return?img_id;
}
public?void?setImg_id(int?img_id) {
this.img_id?= img_id;
}
public?String getExplain() {
return?explain;
}
public?void?setExplain(String explain) {
this.explain?= explain;
}
public?String getName() {
return?name;
}
public?void?setName(String name) {
this.name?= name;
}
???private?int?img_id;
???private?String name;
???private??String explain;
}
Myadapter进行布局 ???线程
package?com.example.bangding;
import?android.content.Context;
import?android.view.LayoutInflater;
import?android.view.View;
import?android.view.ViewGroup;
import?android.widget.BaseAdapter;
import?android.widget.ImageView;
import?android.widget.TextView;
import?java.util.List;
public?class?MyAdapter extends?BaseAdapter {
????private?List list?;
????private?LayoutInflater inflater;
????public??MyAdapter(Context context,List list)
????{
????????this.list?= list;
????????inflater?= LayoutInflater.from(context);
????}
????@Override
????public?int?getCount() {
????????return?list.size();
????}
????@Override
????public?Object getItem(int?position) {
????????return?list.get(position);
????}
????@Override
????public?long?getItemId(int?position) {
????????return?position;
????}
????@Override
????public?View getView(int?position, View convertView, ViewGroup parent) {
????????View view;
????????ViewHolder holder;
????????if(convertView==null)
????????{
????????????view = inflater.inflate(R.layout.myactivity,null);
????????????holder = new?ViewHolder(view);
????????????view.setTag(holder);
????????}
????????else
????????{
????????????view = convertView;
????????????holder = (ViewHolder) view.getTag();
????????}
????????Items items = ?list.get(position);
????????holder.img.setImageResource(items.getImg_id());
????????holder.name.setText(items.getName());
????????holder.explain.setText(items.getExplain());
????????return?view;
????}
????class??ViewHolder
????{
????????private?ImageView img;
????????private?TextView name;
????????private??TextView explain;
????????public?ViewHolder(View view)
????????{
????????????img?= (ImageView)view.findViewById(R.id.imageView1);
????????????name?= (TextView)view.findViewById(R.id.textView1);
????????????explain?= (TextView)view.findViewById(R.id.textView2);
????????}
????}
}
[if !supportLists]9.?[endif]编写一个程序，通过使用Service来实现简单的播放器。
public class Myservice extends Service {
???private MediaPlayer player;
????private boolean ispaused = false;
????private ?int position =0;
????@Override
public void onCreate() {//最一开始会执性这个方法 如果服务在启动之中就不会启动这个方法直接调用onStartCommand 方法
????????super.onCreate();
Log.i("TAG","开始播放");
????????player = MediaPlayer.create(this,R.raw.qiyueshang);}
public void onDestroy() {//停止服务
????????super.onDestroy();
????????if(player != null)
????????????player.stop(); ???}
public ?void Play(int pos)//播放
????{
????????if(player!=null) ??????{
????????????player.start();
Log.i("TAG","开始播放");
????????????player.seekTo(pos); ?????} ??}
public void Pause()//暂停
????{
????????if(player != null && player.isPlaying()) ??{
position = player.getCurrentPosition();//获取播放位置
player.pause();//暂停音乐
????????????ispaused = true; ???}
????????else if(ispaused) ??{
????????????Play(position); ??}??}
public ?void Rest()//重放
{??if(player!=null)
????????????Play(0); ?}
????@Override
public int onStartCommand(Intent intent, int flags, int startId) {//开始服务
????????int flag = intent.getIntExtra("MSG",0);
????????if(flag==1)
????????{Play(0);}
????????else if(flag==2)
????????{Pause();}
????????else if(flag==3)
????????{Rest();}
????????Log.i("MSG",flag+"");
????????return super.onStartCommand(intent, flags, startId);
}
????public IBinder onBind(Intent intent) {
????????return null;
????}
}
[if !supportLists]10.?[endif]编写一个程序，实现在状态栏提示有新短消息，展开状态栏点击消息时弹出详细信息界面。
public class NotifaicationActivity extends AppCompatActivity ?implements View.OnClickListener{
????private ?Notification notification;
????private Button send_notifiaction,stop_notification;
????private ??NotificationManager manager;
????@Override
????protected void onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);
????????send_notifiaction = (Button)findViewById(R.id.send_notification);
????????stop_notification = (Button)findViewById(R.id.stop_notification);
????????send_notifiaction.setOnClickListener(this);
????????stop_notification.setOnClickListener(this);
//第一步首先获取Notification管理对象
????????manager ??= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
//第二步获取Notification.Builder对象
????????Notification.Builder builder = new Notification.Builder(this);
//设置小图标
????????builder.setSmallIcon(R.mipmap.ic_launcher);
//提示音 振动 闪烁都是默认
????????builder.setDefaults(Notification.DEFAULT_ALL);
builder.setTicker("短信");
builder.setContentTitle("有短信");
builder.setContentText("短信来了");
????????Intent intent = new Intent(this,NotifaicationActivity.class);
//生成PendingIntene对象
????????PendingIntent pendingIntent = PendingIntent.getActivity(this,1,intent,0);
//设置跳转页面
????????builder.setContentIntent(pendingIntent);
//获得Notifaication对象
????????notification = builder.build();
????}
????@Override
????public void onClick(View v) {
????????switch (v.getId())
????????{
????????????case R.id.send_notification:
manager.notify(1,notification);//第一个时标识号 第二个是对象
????????????????break;
????????????case R.id.stop_notification:
????????????????manager.cancel(1);
????????????????break;
????????}
????}
}
[if !supportLists]11.?[endif]编写一个程序，实现ListView显示好友列表信息，要求使用BaseAdapter。
public class MyAdapter extends BaseAdapter {
????private List list ;
????private LayoutInflater inflater;
????public ?MyAdapter(Context context,List list)
????{
????????this.list = list;
????????inflater = LayoutInflater.from(context);
????}
????@Override
????public int getCount() {
????????return list.size();
????}
????@Override
????public Object getItem(int position) {
????????return list.get(position);
????}
????@Override
????public long getItemId(int position) {
????????return position;
????}
????@Override
????public View getView(int position, View convertView, ViewGroup parent) {
????????View view;
????????ViewHolder holder;
????????if(convertView==null)
????????{
????????????view = inflater.inflate(R.layout.item,null);
????????????holder = new ViewHolder(view);
????????????view.setTag(holder);
????????}
????????else
????????{
????????????view = convertView;
????????????holder = (ViewHolder) view.getTag();
????????}
????????Items items = ?list.get(position);
????????holder.img.setImageResource(items.getImg_id());
????????holder.name.setText(items.getName());
????????holder.explain.setText(items.getExplain());
????????return view;
????}
????class ?ViewHolder
????{
????????private ImageView img;
????????private TextView name;
????????private ?TextView explain;
????????public ViewHolder(View view)
????????{
????????????img = (ImageView)view.findViewById(R.id.imageView);
????????????name = (TextView)view.findViewById(R.id.name);
????????????explain = (TextView)view.findViewById(R.id.explain);
????????}
????}
}
[if !supportLists]12.?[endif]编写一个程序，实现点击一个按钮，打开一个新的Activity并传递“hello”，在新的Activity，接收传递过来的“hello”，将“hello”改成“hello world”，结束当前Activity并将需要修改后的值返回并关闭当前窗体。
public class IntentFirstActivity extends AppCompatActivity {
????private Button send;
????private EditText edit;
????@Override
????protected void onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_intent_first);
????????send = (Button)findViewById(R.id.send_message);
????????edit = (EditText)findViewById(R.id.input);
????????send.setOnClickListener(new View.OnClickListener() {
????????????@Override
????????????public void onClick(View v) {
????????????????Intent intent = new Intent(IntentFirstActivity.this,IntentSecondActivity.class);
????????????????intent.putExtra("MSG",edit.getText().toString());
????????????????startActivityForResult(intent,2);
????????????}
????????});
????}
????@Override
????protected void onActivityResult(int requestCode, int resultCode, Intent data) {
???????edit.setText(data.getStringExtra("MSG"));
Toast.makeText(this,"收到新的值了",Toast.LENGTH_SHORT).show();
????}
}
??protected void onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_intent_second);
????????send = (Button)findViewById(R.id.transition_msg);
????????Msg = (EditText)findViewById(R.id.return_msg);
????????receive_msg = (TextView)findViewById(R.id.receive);
receive_msg.setText("收到的信息为:" + getIntent().getStringExtra("MSG"));
????????send.setOnClickListener(new View.OnClickListener() {
????????????@Override
????????????public void onClick(View v) {
????????????????Intent intent = new Intent();
????????????????intent.putExtra("MSG",Msg.getText().toString());
//将修改的结果返回给上一个intent
????????????????setResult(1,intent);
????????????????finish();
????????????}
????????});
????}
}
三、
1．实现个人通讯录管理，主界面中包含添加按钮和ListView，能实现通讯录的添加和管理；所有通讯录信息通过ListView控件显示，长按ListView中的一项，出现以下功能选项：
呼叫、编辑联系人、删除联系人，分别实现这几个功能。
2．实现个人通讯录管理，主界面中包含添加按钮和ListView，能实现通讯录的添加和管理；所有通讯录信息通过ListView控件显示，长按ListView中的一项，出现以下功能选项：
复制、浏览联系人、删除联系人，分别实现这几个功能。
3．实现个人备忘录管理，主界面中包含添加按钮和ListView，能实现对备忘录的添加和管理；所有备忘录信息通过ListView控件显示，长按ListView中的一项，出现以下功能选项：
复制、编辑、删除，分别实现这几个功能。
4.实现个人备忘录管理，主界面中包含添加按钮和ListView，能实现对备忘录的添加和管理；所有备忘录信息通过ListView控件显示，长按ListView中的一项，出现以下功能选项：
复制、浏览、删除，分别实现这几个功能。
5.实现学生管理，登录界面，实现用户的登录，登录成功后，显示添加学生信息界面，学生信息包括学号、姓名、学院、专业和性别，输入完成后点击添加按钮添加到数据库中。要求：选择学院时专业发生相应的变化，性别采用单选按钮。
6.实现收货管理，包括以下功能：
1）用户登录功能；
2）货物管理功能，长按某条记录进行编辑和删除，或点击全部删除，清空所有收到的货物列表；
3）收货功能，货物信息：货物名称、件数、运费、目的地、收货人、电话等信息。
7.实现挂号预约系统，包括以下功能：
1）挂号预约，包括姓名、性别、年龄、地址、所挂科室等；
2）挂号预约管理，使用ListView实现，可删除或重新预约。
8.个人理财系统，包括以下功能：
1）支出录入：日期、金额、项目
2）收入录入：日期、金额、项目
3）支出收入列表，查询一个时间段的收入或支出情况并汇总。
9.日记系统，包括以下功能：
1）写日记，包括日期、天气、标题、内容等；
2）日记列表，根据条件查询日记，能实现对日记信息的显示，点击一条日记信息，显示日记详细内容，长按每条记录，能弹出对日记信息的修改、删除。
10.作业系统，包括以下功能：
1）记录作业，包括日期、作业类型（语文或数学等）、作业内容
2）显示作业列表，点击某项作业，转到作业详细信息界面，在该界面，可设置作业已完成、未做、不会等标识。
11.考勤系统，包括以下功能：
1）记录考勤，包括日期，年级，班级，总人数，旷课人数，请假人数；
2）记录旷课人具体信息，包括日期，年级，班级，旷课人姓名
3）显示考勤列表
