Android Studio多功能闹钟[android源码]

多功能闹钟App

简 介

此多功能闹钟界面采用TabHost框架，头部包含分别用LinearLayout水平布局显示四个标签闹钟，时钟，计时器和秒表，FrameLayout框架内部采用LinearLayout垂直布局。功能事件的基本实现分别有AlarmView类，AlarmReceiver类，PlayAlarmAty类， TimeView类和StopWatch类完成。

主 要 技 术

此多功能闹钟界面采用TabHost 框架，头部包含分别用LinearLayout水平布局显示四个标签闹钟，时钟，计时器和秒表，FrameLayout框架内部采用LinearLayout垂直布局。功能事件的基本实现分别有AlarmView类，AlarmReceiver类，PlayAlarmAty类， TimeView类和StopWatch类完成。：

1. 闹钟界面的界面设计 ，闹钟界面使用一个Button按钮和ListvView，设置的闹钟由ListView的Item项来呈现出来；开始按钮设置监听，当点击添加闹钟按钮时触发按钮监听引用TimePickerDialog将弹出一个设置时间对话框，当设置时间后点击ok按钮将触发监听中添加saveAlarmList()存储方法保存数据；闹钟功能使用SharedPreferences类存取数据，使用创建的saveAlarmList()存储方法和readSavedAlarmList()读取方法来实现闹钟设定数据的存取，使用创建AlarmData工具类进行数据存放。闹钟的设置及具体的响应采用AlarmView类，AlarmReceiver类和PlayAlarmAty类；AlarmView类中通过listview的setOnItemLongClickListener方法监听每个Item项，当检测到长按水平弹出到闹钟的操作对话框，通过弹出对话框中setNegativeButton按钮，删除Item项目闹钟；闹钟响铃通过AlarmManager的实例对象，根据我们设定时间来实现响铃。该闹钟是利用了页面跳转来实现的响铃，通过getActivity()方法来获取PendingIntent对象，将设定好的时间通过数据跳转到响铃的页面，通过弹出一个提示对话框和mediaPlayer 组件播放音乐来实现响铃功能。
2. 时钟功能的实现简单引用了DigitalClock 显示时钟时间。
3. 计时器功能具体实现是通过TimerView类来实现的，类中设置了开始,暂停和重置方法，然后监听开始，暂停，重置按钮来引用对应方法来实现计时器的计时功能，计时时间到采用Handle机制来新建一个对话框提醒时间到。
4. 秒表的具体实现通过StopWatch 类来实现，类中设置了开始，暂停，复位和重置按钮的监听，监听直接引用了Chronometer 的start，stop，setBase和setFormat等方法实现秒表的功能。

界面截图

主要代码

主页面，MainActivity 代码.

// An highlighted block
public class MainActivity extends Activity {
    private TabHost tabHost;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tabHost=(TabHost)findViewById(android.R.id.tabhost);
        tabHost.setup();

        tabHost.addTab(tabHost.newTabSpec("tabAlarm").setIndicator("闹钟").setContent(R.id.tabAlarm));
        tabHost.addTab(tabHost.newTabSpec("tabTime").setIndicator("时钟").setContent(R.id.tabTime));
        tabHost.addTab(tabHost.newTabSpec("tabTimer").setIndicator("计时器").setContent(R.id.tabTimer));
        tabHost.addTab(tabHost.newTabSpec("tabStopWatch").setIndicator("秒表").setContent(R.id.tabStopWatch));
    }
}

主页面，PlayAlarmAty 代码.

// An highlighted block
public class PlayAlarmAty extends Activity {
    private MediaPlayer mp;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mp = MediaPlayer.create(this,R.raw.clockmusic2);
        mp.start();
        new AlertDialog.Builder(PlayAlarmAty.this)
                .setIcon(R.mipmap.ic_launcher)
                .setTitle("闹钟")
                .setMessage("快完成你制定的计划吧!!!")
                .setNegativeButton("关闭", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        PlayAlarmAty.this.finish();
                        mp.stop();
                    }
                })
                .show();
    }
    @Override
    protected void onPause(){
        super.onPause();
        finish();
    }
    protected void onDestroy(){
        super.onDestroy();
        mp.stop();
        mp.release();
    }
}

主页面，AlarmView 代码.

// An highlighted block
public class AlarmView extends LinearLayout {

    public AlarmView(Context context,AttributeSet attrs,int defStyle){
        super(context,attrs,defStyle);
        init();
    }
    public AlarmView(Context context,AttributeSet attrs){
        super(context,attrs);
        init();
    }
    public AlarmView(Context context ){
        super(context);
        init();
    }
    private void init(){
        alarmManager= (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE);
    }

    @Override
    protected void onFinishInflate(){
        super.onFinishInflate();

        btAddAlarm=(Button) findViewById(R.id.btnAddAlarm);
        lvAlarmList=(ListView) findViewById(R.id.lvAlarmList);

        adapter=new ArrayAdapter<AlarmData>(getContext(),android.R.layout.simple_list_item_1);
        lvAlarmList.setAdapter(adapter);
        readSavedAlarmList();

        btAddAlarm.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                addAlarm();
            }
        });

        lvAlarmList.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {
                new AlertDialog.Builder(getContext()).setTitle("操作").setItems(new CharSequence[]{"删除"}, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        switch (which){
                            case 0:
                                deleteAlarm(position);
                                break;
                            default:
                                break;
                        }
                    }
                }).setNegativeButton("取消",null).show();
                return true;
            }
        });
    }

    private void deleteAlarm(int position){
        AlarmData ad=adapter.getItem(position);
        adapter.remove(ad);
        saveAlarmList();   alarmManager.cancel(PendingIntent.getBroadcast(getContext(),ad.getId(),new Intent(getContext(),AlarmReceiver.class),0));
    }

    private void addAlarm(){
        Calendar c =Calendar.getInstance();
        new TimePickerDialog(getContext(), new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                Calendar calendar=Calendar.getInstance();
                calendar.set(Calendar.HOUR_OF_DAY,hourOfDay);
                calendar.set(Calendar.MINUTE,minute);
                calendar.set(Calendar.SECOND,0);
                calendar.set(Calendar.MILLISECOND,0);

                Calendar currentTime=Calendar.getInstance();
                if (calendar.getTimeInMillis()<=currentTime.getTimeInMillis()){
                    calendar.setTimeInMillis(calendar.getTimeInMillis()+24*60*60*1000);
                }
                AlarmData ad=(new AlarmData(calendar.getTimeInMillis()));
                adapter.add(ad);
                alarmManager.set(AlarmManager.RTC_WAKEUP,
                        ad.getTime(),
                        PendingIntent.getBroadcast(getContext(),
                                ad.getId(),
                                new Intent(getContext(),AlarmReceiver.class),0));
                saveAlarmList();
            }
        },c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE),true).show();
    }
    private void saveAlarmList(){
        SharedPreferences.Editor editor =getContext().getSharedPreferences(AlarmView.class.getName(),Context.MODE_PRIVATE).edit();

        StringBuffer sb = new StringBuffer();
        for (int i=0;i<adapter.getCount();++i) {
            sb.append(adapter.getItem(i).getTime()).append(",");
        }
        if(sb.length()>1) {
            String content = sb.toString().substring(0, sb.length() - 1);
            editor.putString(KEY_ALARM_LIST, content);
            System.out.println(content);
        }else {
            editor.putString(KEY_ALARM_LIST,null);
        }
            editor.commit();
    }

    private void readSavedAlarmList(){
        SharedPreferences sp=getContext().getSharedPreferences(AlarmView.class.getName(),Context.MODE_PRIVATE);
        String content=sp.getString(KEY_ALARM_LIST,null);
        if (content!=null){
            String[] timeString=content.split(",");
            for (String string:timeString){
                adapter.add(new AlarmData(Long.parseLong(string)));
            }
        }
    }
    private static final String KEY_ALARM_LIST="alarmlist";
    private Button btAddAlarm;
    private ListView lvAlarmList;
    private ArrayAdapter<AlarmData> adapter;
    private AlarmManager alarmManager;
    private static class AlarmData{
        public AlarmData(long time){
            this.time=time;
            date=Calendar.getInstance();
            date.setTimeInMillis(time);

            timeLable=String.format("%d月%d日 %d:%d",
                   date.get(Calendar.MONTH)+1,
                   date.get(Calendar.DAY_OF_MONTH),
                   date.get(Calendar.HOUR_OF_DAY),
                   date.get(Calendar.MINUTE));

        }
        public long getTime(){
            return time;
        }
        public String getTimeLable(){
            return timeLable;
        }
        @Override
        public String toString(){
            return getTimeLable();
        }
        public  int getId() {
            return  (int)(getTime()/1000/60);
        }
        private  String timeLable="";
        private long time=0;
        private Calendar date;
    }
}

计时器页面，TimerView 代码.

// An highlighted block
public class TimerView extends LinearLayout{
    private Button btnStart, btnPause, btnReset;
    private EditText etHour, etMin, etSec;
    private Timer timer = new Timer ( );
    private TimerTask timerTask = null;
    private int allTimerCount = 0;
    private static final int MSG_WHAT_TIME_IS_UP = 1;
    private static final int MSG_WHAT_TIME_TICK = 2;
    
    public TimerView(Context context , @Nullable AttributeSet attrs , int defStyleAttr) {
        super ( context , attrs , defStyleAttr );
    }
    public TimerView(Context context , @Nullable AttributeSet attrs) {
        super ( context , attrs );
    }
    public TimerView(Context context) {
        super ( context );
    }
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        btnPause = (Button) findViewById(R.id.btnPause);
        btnPause.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                stopTimer();
                btnPause.setVisibility(View.GONE);
                btnStart.setVisibility ( View.VISIBLE );
                btnReset.setVisibility(View.VISIBLE);
            }
        });
        btnReset = (Button) findViewById(R.id.btnReset);
        btnReset.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                stopTimer();
                etHour.setText("0");
                etMin.setText("0");
                etSec.setText("0");

                btnReset.setVisibility(View.GONE);
                btnPause.setVisibility(View.GONE);
                btnStart.setVisibility(View.VISIBLE);
            }
        });
        btnStart = (Button) findViewById(R.id.btnStart);
        btnStart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startTimer();

                btnStart.setVisibility(View.GONE);
                btnPause.setVisibility(View.VISIBLE);
                btnReset.setVisibility(View.VISIBLE);
            }
        });

        etHour = (EditText) findViewById(R.id.etHour);
        etMin = (EditText) findViewById(R.id.etMin);
        etSec = (EditText) findViewById(R.id.etSec);
        etHour.setText("00");
        etHour.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (!TextUtils.isEmpty(s)) {
                    int value = Integer.parseInt(s.toString());
                    if (value>59) {
                        etHour.setText("59");
                    }else if (value<0) {
                        etHour.setText("0");
                    }
                }
                checkToEnableBenStart ();
            }
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,int after) {
            }
            @Override
            public void afterTextChanged(Editable s) {
            }
        });
        etMin.setText("00");
        etMin.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (!TextUtils.isEmpty(s)) {
                    int value = Integer.parseInt(s.toString());

                    if (value>59) {
                        etMin.setText("59");
                    }else if (value<0) {
                        etMin.setText("0");
                    }
                }
                checkToEnableBenStart ();
            }
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,int after) {
            }
            @Override
            public void afterTextChanged(Editable s) {
            }
        });
        etSec.setText("00");
        etSec.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (!TextUtils.isEmpty(s)) {
                    int value = Integer.parseInt(s.toString());
                    if (value>59) {
                        etSec.setText("59");
                    }else if (value<0) {
                        etSec.setText("0");
                    }
                }
                checkToEnableBenStart ();
            }
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,int after) {
            }
            @Override
            public void afterTextChanged(Editable s) {
            }
        });

        btnStart.setVisibility(View.VISIBLE);
        btnStart.setEnabled(false);
        btnPause.setVisibility(View.GONE);
        btnReset.setVisibility(View.GONE);
    }
    private void checkToEnableBenStart() {
        btnStart.setEnabled ( (!TextUtils.isEmpty ( etHour.getText ( ) ) && Integer.parseInt ( etHour.getText ( ).toString ( ) ) > 0) ||
                (!TextUtils.isEmpty ( etMin.getText ( ) ) && Integer.parseInt ( etMin.getText ( ).toString ( ) ) > 0) ||
                (!TextUtils.isEmpty ( etSec.getText ( ) ) && Integer.parseInt ( etSec.getText ( ).toString ( ) ) > 0) );
    }
    private void startTimer() {
        allTimerCount = Integer.parseInt ( etHour.getText ( ).toString ( ) ) * 60 * 60 + Integer.parseInt ( etMin.getText ( ).toString ( ) ) * 60 + Integer.parseInt ( etSec.getText ( ).toString ( ) );
        if (timerTask == null) {
            timerTask = new TimerTask ( ) {
                @Override
                public void run() {
                    allTimerCount--;
                    handler.sendEmptyMessage ( MSG_WHAT_TIME_TICK );
                    if (allTimerCount == 0) {
                        handler.sendEmptyMessage ( MSG_WHAT_TIME_IS_UP );
                        stopTimer ( );
                    }
                }
            };
            timer.schedule ( timerTask , 1000 , 1000 );
        }

    }
    
    private void stopTimer() {
        if (timerTask != null) {
            timer.cancel ( );
            timerTask = null;
        }
    }

    private android.os.Handler handler = new android.os.Handler ( ) {
        public void handleMessage(android.os.Message msg) {
            switch (msg.what) {
                case MSG_WHAT_TIME_TICK:
                    int hour = allTimerCount / 60 / 60;
                    int min = (allTimerCount / 60) % 60;
                    int sec = allTimerCount % 60;
                    etHour.setText ( hour + "" );
                    etMin.setText ( min + "" );
                    etSec.setText ( sec + "" );
                    break;

                case MSG_WHAT_TIME_IS_UP:
                    new AlertDialog.Builder ( getContext ( ) ).setTitle("Timer" )
                            .setMessage ( "时间到" )
                            .setNegativeButton ( "返回" , null )
                            .show ( );
                    btnStart.setVisibility ( View.VISIBLE );
                    btnPause.setVisibility ( View.GONE );
                    btnReset.setVisibility ( View.GONE );
                    break;
                default:
                    break;
            }
        }
    };  
}

秒表页面，StopWatch 代码.

// An highlighted block
public class StopWatch extends LinearLayout {

    private Chronometer myChronometer;
    private Button butStart;
    private Button butStop;
    private Button butResume;
    private Button butReset;

    public StopWatch(Context context , @Nullable AttributeSet attrs) {
        super ( context , attrs );

    }
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate ( );
        
        myChronometer = (Chronometer) super.findViewById ( R.id.myChronometer );
        butStart = (Button) super.findViewById ( R.id.butStart );
        butStop = (Button) super.findViewById ( R.id.butPause );
        butResume=(Button) super.findViewById ( R.id.butResume );
        butReset = (Button) super.findViewById ( R.id.butReset );

        butStart.setVisibility ( View.VISIBLE );
        butStop.setVisibility ( View.GONE);
        butResume.setVisibility ( View.GONE);
        butReset.setVisibility ( View.GONE );
        
        butStart.setOnClickListener ( new OnClickListener ( ) {
            @Override
            public void onClick(View v) {
                myChronometer.setBase ( (long) ((long) (SystemClock.elapsedRealtime ()-
                        (long)Double.parseDouble (myChronometer.getText ().toString ().split ( ":")[0])*60*1000)-
                        (long)Double.parseDouble ( myChronometer.getText ().toString ().split (":" )[1] )*1000) );
                myChronometer.start ();
                butStart.setVisibility ( View.GONE );
                butResume.setVisibility ( View.VISIBLE );
                butStop.setVisibility ( View.VISIBLE);
                butReset.setVisibility ( View.GONE );
            }
        } );

        butStop.setOnClickListener ( new OnClickListener ( ) {
            @Override
            public void onClick(View v) {
                myChronometer.stop ();
                butStop.setVisibility ( View.GONE );
                butResume.setVisibility ( View.GONE);
                butStart.setVisibility ( View.VISIBLE );
                butReset.setVisibility ( View.VISIBLE );
            }
        } );

        butReset.setOnClickListener ( new OnClickListener ( ) {
            @Override
            public void onClick(View v) {
                myChronometer.setBase ( SystemClock.elapsedRealtime ( ) );
                butReset.setVisibility ( View.GONE );
                butResume.setVisibility ( View.GONE );
                butStart.setVisibility ( View.VISIBLE );
                butStop.setVisibility ( View.GONE);
            }
        } );

        butResume.setOnClickListener ( new OnClickListener ( ) {
            @Override
            public void onClick(View v) {
                myChronometer.setFormat ( "%s" );
                myChronometer.setBase ( SystemClock.elapsedRealtime ( ) );
                butStop.setVisibility ( View.VISIBLE );
                butReset.setVisibility ( View.GONE );
                butResume.setVisibility ( View.VISIBLE);
                butStart.setVisibility ( View.GONE );
            }
        } );
    }
}

源码链接

源码下载链接: link.

作者信息

E-mail

[email protected]

Authors

罄宇