友善之臂Mini6410之Android開發學習筆記（2）-PWM Demo

git clone https://code.google.com/p/androiddemoformini6410/
git clone https://code.google.com/p/androiddemoformini6410/

PWMActivity.java

[java] package com.mini6410.PWM;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ToggleButton;

import com.friendlyarm.AndroidSDK.HardwareControler;
import com.mini6410.R;

/**
*
* ClassName:PWMActivity
* Reason:   PWM Demo
*
* @author   snowdream
* @version
* @since    Ver 1.1
* @Date     2011   2012-03-11      17:21
*
* @see
*/
public class PWMActivity extends Activity implements Button.OnClickListener,ToggleButton.OnCheckedChangeListener{
    public static final String TAG = "PWMActivity";

    /*PWM頻率*/
    public static final int PWM_FREQUENCY_1 = 1;
    public static final int PWM_FREQUENCY_100 = 100;
    public static final int PWM_FREQUENCY_200 = 200;
    public static final int PWM_FREQUENCY_500 = 500;
    public static final int PWM_FREQUENCY_1000 = 1000;
    public static final int PWM_FREQUENCY_2000 = 2000;
    public static final int PWM_FREQUENCY_5000 = 5000;
    public static final int PWM_FREQUENCY_10000 = 10000;

    /*PWM播放時長*/
    public static final int PWM_PLAY_PERIOD_FOR_EVER = -1;
    public static final int PWM_PLAY_PERIOD_100 = 100;
    public static final int PWM_PLAY_PERIOD_200 = 200;
    public static final int PWM_PLAY_PERIOD_300 = 300;
    public static final int PWM_PLAY_PERIOD_500 = 500;
    public static final int PWM_PLAY_PERIOD_1000 = 1000;

    /*PWM播放間隔*/
    public static final int PWM_WAIT_PERIOD_100 = 100;
    public static final int PWM_WAIT_PERIOD_200 = 200;
    public static final int PWM_WAIT_PERIOD_300 = 300;
    public static final int PWM_WAIT_PERIOD_500 = 500;
    public static final int PWM_WAIT_PERIOD_1000 = 1000;

    /*播放頻率*/
    public int mfrequency = PWM_FREQUENCY_1000;

    /*頻率改變步長Step*/
    public int mfrequencystep = 100;

    /*播放時長*/
    public int mplayperiod = PWM_PLAY_PERIOD_1000;

    /*播放間隔*/
    public int mwaitperiod = PWM_WAIT_PERIOD_1000;

    /*播放次數*/
    public int mplaynum = 20;

    private boolean mStop = false;

    private Button mButtonSub = null;
    private Button mButtonAdd = null;

    private ToggleButton mToggleButtonStartForEver= null;
    private ToggleButton mToggleButtonStartForTimes = null;

    private EditText mEditTextFrequency = null;
    private EditText mEditTextPlayPeriod = null;
    private EditText mTextViewWaitPeriod = null;
    private EditText mEditTextPlayNum = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pwmdemo);

        initUI();
        initData();

    }

    @Override
    protected void onDestroy() {
        mStop = true;
        super.onDestroy();
    }

    /**
     *
     * initUI: 初始化UI
     *
     * @param
     * @return
     * @throws
     */
    public void initUI(){
        mButtonSub = (Button)findViewById(R.id.ButtonSUB);
        mButtonAdd = (Button)findViewById(R.id.ButtonADD);

        /*按鈕監聽器，具體實現參考下面的函數：onClick*/
        mButtonSub.setOnClickListener(this);
        mButtonAdd.setOnClickListener(this);

        mToggleButtonStartForEver= (ToggleButton)findViewById(R.id.ToggleButtonStartForEver);
        mToggleButtonStartForTimes = (ToggleButton)findViewById(R.id.ToggleButtonStartForTimes);

        /*開關按鈕監聽器，具體實現參考下面的函數：onCheckedChanged*/
        mToggleButtonStartForEver.setOnCheckedChangeListener(this);
        mToggleButtonStartForTimes.setOnCheckedChangeListener(this);

        mEditTextFrequency = (EditText)findViewById(R.id.EditTextFrequency);
        mEditTextPlayPeriod = (EditText)findViewById(R.id.EditTextPlayPeriod);
        mTextViewWaitPeriod = (EditText)findViewById(R.id.EditTextWaitPeriod);
        mEditTextPlayNum = (EditText)findViewById(R.id.EditTextPlayNum);

        /*EditText監聽器，具體實現參考下面的函數：onTextChanged
         * 主要用於獲取更改後最新的數值，下同。
         * */
        mEditTextFrequency.addTextChangedListener(new TextWatcher() {

            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // TODO Auto-generated method stub
                try {
                    mfrequency = Integer.parseInt(mEditTextFrequency.getText().toString());
                } catch (NumberFormatException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            public void afterTextChanged(Editable s) {
                // TODO Auto-generated method stub

            }
        });

        mEditTextPlayPeriod.addTextChangedListener(new TextWatcher() {

            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // TODO Auto-generated method stub
                try {
                    mplayperiod = Integer.parseInt(mEditTextPlayPeriod.getText().toString());
                } catch (NumberFormatException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            public void afterTextChanged(Editable s) {
                // TODO Auto-generated method stub

            }
        });

        mTextViewWaitPeriod.addTextChangedListener(new TextWatcher() {

            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // TODO Auto-generated method stub
                try {
                    mwaitperiod = Integer.parseInt(mTextViewWaitPeriod.getText().toString());
                } catch (NumberFormatException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            public void afterTextChanged(Editable s) {
                // TODO Auto-generated method stub

            }
        });

        mEditTextPlayNum.addTextChangedListener(new TextWatcher() {

            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // TODO Auto-generated method stub
                try {
                    mplaynum = Integer.parseInt(mEditTextPlayNum.getText().toString());
                } catch (NumberFormatException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            public void afterTextChanged(Editable s) {
                // TODO Auto-generated method stub

            }
        });

    }

    /**
     *
     * initData: 初始化各個控件的數值
     *
     * @param
     * @return
     * @throws
     */
    public void initData(){
        mEditTextFrequency.setText(String.valueOf(mfrequency));
        mEditTextPlayPeriod.setText(String.valueOf(mplayperiod));
        mTextViewWaitPeriod.setText(String.valueOf(mwaitperiod));
        mEditTextPlayNum.setText(String.valueOf(mplaynum));
    }

    /**
     *
     * onCheckedChanged: 開關按鈕監聽器。當有開關按鈕的狀態改變時，響應點擊。
     *
     * @param   buttonView 改變狀態的開關按鈕對象；
     * @param   isChecked 該開關按鈕是否被選中；
     * @return
     * @throws
     */
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        ToggleButton mToggleButton = (ToggleButton)buttonView;

        switch (mToggleButton.getId()) {
        case R.id.ToggleButtonStartForEver:
            if(isChecked){
                PWMPlay(mfrequency);
            }else{
                mStop = true;
                PWMStop();
            }
            break;
        case R.id.ToggleButtonStartForTimes:
            if(isChecked){
                mStop = false;
                PWMThread mPWMThread = new PWMThread();
                mPWMThread.start();
            }else{
                mStop = true;
            }
            break;
        default:
            break;
        }
    }

    /**
     *
     * onClick: 按鈕監聽器。當有按鈕被點擊時，響應點擊。
     *
     * @param   v 被點擊的按鈕對象；
     * @return
     * @throws
     */
    public void onClick(View v) {
        Button mButton = (Button)v;

        switch (mButton.getId()) {
        case R.id.ButtonSUB:
            if(mfrequency <= 1)
                mfrequency = PWM_FREQUENCY_1;
            else if(mfrequency == PWM_FREQUENCY_100)
                mfrequency = PWM_FREQUENCY_1;
            else
                mfrequency -= mfrequencystep;

            mEditTextFrequency.setText(String.valueOf(mfrequency));
            break;
        case R.id.ButtonADD:
            if(mfrequency <= 1)
                mfrequency = PWM_FREQUENCY_100;
            else
                mfrequency += mfrequencystep;

            mEditTextFrequency.setText(String.valueOf(mfrequency));
            break;
        default:
            break;
        }
    }

    /**
     *
     * PWMPlay: 啟動蜂鳴器，並播放。
     *
     * @param   frequency 播放頻率
     * @return true 表示播放成功；否則，表示播放失敗。
     * @throws
     */
    public boolean PWMPlay(int frequency)
    {
        boolean ret = false;
        int result = -1;

        result = HardwareControler.PWMPlay(frequency);

        if(result == 0)
            ret = true;
        else
            ret = false;

        return ret;
    }

    /**
     *
     * PWMStop: 停止並關閉蜂鳴器。
     *
     * @param
     * @return true 表示停止成功；否則，表示停止失敗。
     * @throws
     */
    public boolean PWMStop(){
        boolean ret = false;
        int result = -1;

        result = HardwareControler.PWMStop();

        if(result == 0)
            ret = true;
        else
            ret = false;

        return ret;
    }

    /**
     *
     * PWMThread: PWM播放線程
     *
     * @param
     * @return
     * @throws
     */
    public class PWMThread extends Thread{

        @Override
        public void run() {
            Log.i(TAG, "PWMThread Start");

            for(int i = 0 ; i < mplaynum; i++ )
            {
                Log.i(TAG, String.valueOf(i));

                if(mStop)
                {
                    PWMStop();
                    break;
                }

                /*啟動蜂鳴器，並使用頻率 mfrequency 進行播放*/
                PWMPlay(mfrequency);

                /*等待播放時長 mplayperiod 結束*/
                try {
                    sleep(mplayperiod);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                /*停止蜂鳴器*/
                PWMStop();

                if(mStop)
                    break;

                /*等待播放間隔 mwaitperiod 結束*/
                try {
                    sleep(mwaitperiod);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

            }
            Log.i(TAG, "PWMThread Stop");
        }
    }
}
package com.mini6410.PWM;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ToggleButton;

import com.friendlyarm.AndroidSDK.HardwareControler;
import com.mini6410.R;

/**
*
* ClassName:PWMActivity
* Reason: PWM Demo
*
* @author   snowdream
* @version
* @since    Ver 1.1
* @Date 2011 2012-03-11  17:21
*
* @see
*/
public class PWMActivity extends Activity implements Button.OnClickListener,ToggleButton.OnCheckedChangeListener{
public static final String TAG = "PWMActivity";

/*PWM頻率*/
public static final int PWM_FREQUENCY_1 = 1;
public static final int PWM_FREQUENCY_100 = 100;
public static final int PWM_FREQUENCY_200 = 200;
public static final int PWM_FREQUENCY_500 = 500;
public static final int PWM_FREQUENCY_1000 = 1000;
public static final int PWM_FREQUENCY_2000 = 2000;
public static final int PWM_FREQUENCY_5000 = 5000;
public static final int PWM_FREQUENCY_10000 = 10000;

/*PWM播放時長*/
public static final int PWM_PLAY_PERIOD_FOR_EVER = -1;
public static final int PWM_PLAY_PERIOD_100 = 100;
public static final int PWM_PLAY_PERIOD_200 = 200;
public static final int PWM_PLAY_PERIOD_300 = 300;
public static final int PWM_PLAY_PERIOD_500 = 500;
public static final int PWM_PLAY_PERIOD_1000 = 1000;

/*PWM播放間隔*/
public static final int PWM_WAIT_PERIOD_100 = 100;
public static final int PWM_WAIT_PERIOD_200 = 200;
public static final int PWM_WAIT_PERIOD_300 = 300;
public static final int PWM_WAIT_PERIOD_500 = 500;
public static final int PWM_WAIT_PERIOD_1000 = 1000;

/*播放頻率*/
public int mfrequency = PWM_FREQUENCY_1000;

/*頻率改變步長Step*/
public int mfrequencystep = 100;

/*播放時長*/
public int mplayperiod = PWM_PLAY_PERIOD_1000;

/*播放間隔*/
public int mwaitperiod = PWM_WAIT_PERIOD_1000;

/*播放次數*/
public int mplaynum = 20;

private boolean mStop = false;

private Button mButtonSub = null;
private Button mButtonAdd = null;

private ToggleButton mToggleButtonStartForEver= null;
private ToggleButton mToggleButtonStartForTimes = null;

private EditText mEditTextFrequency = null;
private EditText mEditTextPlayPeriod = null;
private EditText mTextViewWaitPeriod = null;
private EditText mEditTextPlayNum = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.pwmdemo);

initUI();
initData();

}

@Override
protected void onDestroy() {
mStop = true;
super.onDestroy();
}

/**
*
* initUI: 初始化UI
*
* @param
* @return
* @throws
*/
public void initUI(){
  mButtonSub = (Button)findViewById(R.id.ButtonSUB);
  mButtonAdd = (Button)findViewById(R.id.ButtonADD);

  /*按鈕監聽器，具體實現參考下面的函數：onClick*/
  mButtonSub.setOnClickListener(this);
  mButtonAdd.setOnClickListener(this);

mToggleButtonStartForEver= (ToggleButton)findViewById(R.id.ToggleButtonStartForEver);
mToggleButtonStartForTimes = (ToggleButton)findViewById(R.id.ToggleButtonStartForTimes);

  /*開關按鈕監聽器，具體實現參考下面的函數：onCheckedChanged*/
  mToggleButtonStartForEver.setOnCheckedChangeListener(this);
  mToggleButtonStartForTimes.setOnCheckedChangeListener(this);

  mEditTextFrequency = (EditText)findViewById(R.id.EditTextFrequency);
  mEditTextPlayPeriod = (EditText)findViewById(R.id.EditTextPlayPeriod);
  mTextViewWaitPeriod = (EditText)findViewById(R.id.EditTextWaitPeriod);
  mEditTextPlayNum = (EditText)findViewById(R.id.EditTextPlayNum);

  /*EditText監聽器，具體實現參考下面的函數：onTextChanged
   * 主要用於獲取更改後最新的數值，下同。
   * */
  mEditTextFrequency.addTextChangedListener(new TextWatcher() {

   public void onTextChanged(CharSequence s, int start, int before, int count) {
    // TODO Auto-generated method stub
    try {
     mfrequency = Integer.parseInt(mEditTextFrequency.getText().toString());
    } catch (NumberFormatException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }

   public void beforeTextChanged(CharSequence s, int start, int count,
     int after) {
    // TODO Auto-generated method stub

}

public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub

}
});

mEditTextPlayPeriod.addTextChangedListener(new TextWatcher() {

   public void onTextChanged(CharSequence s, int start, int before, int count) {
    // TODO Auto-generated method stub
    try {
     mplayperiod = Integer.parseInt(mEditTextPlayPeriod.getText().toString());
    } catch (NumberFormatException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }

   public void beforeTextChanged(CharSequence s, int start, int count,
     int after) {
    // TODO Auto-generated method stub

}

public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub

}
});

mTextViewWaitPeriod.addTextChangedListener(new TextWatcher() {

   public void onTextChanged(CharSequence s, int start, int before, int count) {
    // TODO Auto-generated method stub
    try {
     mwaitperiod = Integer.parseInt(mTextViewWaitPeriod.getText().toString());
    } catch (NumberFormatException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }

   public void beforeTextChanged(CharSequence s, int start, int count,
     int after) {
    // TODO Auto-generated method stub

}

public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub

}
});

mEditTextPlayNum.addTextChangedListener(new TextWatcher() {

   public void onTextChanged(CharSequence s, int start, int before, int count) {
    // TODO Auto-generated method stub
    try {
     mplaynum = Integer.parseInt(mEditTextPlayNum.getText().toString());
    } catch (NumberFormatException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }

   public void beforeTextChanged(CharSequence s, int start, int count,
     int after) {
    // TODO Auto-generated method stub

}

public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub

}
});

}

/**
*
* initData: 初始化各個控件的數值
*
* @param
* @return
* @throws
*/
public void initData(){
  mEditTextFrequency.setText(String.valueOf(mfrequency));
  mEditTextPlayPeriod.setText(String.valueOf(mplayperiod));
  mTextViewWaitPeriod.setText(String.valueOf(mwaitperiod));
  mEditTextPlayNum.setText(String.valueOf(mplaynum));
}

/**
*
* onCheckedChanged: 開關按鈕監聽器。當有開關按鈕的狀態改變時，響應點擊。
*
* @param   buttonView 改變狀態的開關按鈕對象；
* @param   isChecked 該開關按鈕是否被選中；
* @return
* @throws
*/
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
  ToggleButton mToggleButton = (ToggleButton)buttonView;

  switch (mToggleButton.getId()) {
  case R.id.ToggleButtonStartForEver:
   if(isChecked){
    PWMPlay(mfrequency);
   }else{
    mStop = true;
    PWMStop();
   }
   break;
  case R.id.ToggleButtonStartForTimes:
   if(isChecked){
    mStop = false;
    PWMThread mPWMThread = new PWMThread();
    mPWMThread.start();
   }else{
    mStop = true;
   }
   break;
  default:
   break;
  }
}

/**
*
* onClick: 按鈕監聽器。當有按鈕被點擊時，響應點擊。
*
* @param   v 被點擊的按鈕對象；
* @return
* @throws
*/
public void onClick(View v) {
  Button mButton = (Button)v;

  switch (mButton.getId()) {
  case R.id.ButtonSUB:
   if(mfrequency <= 1)
    mfrequency = PWM_FREQUENCY_1;
   else if(mfrequency == PWM_FREQUENCY_100)
    mfrequency = PWM_FREQUENCY_1;
   else
    mfrequency -= mfrequencystep;

   mEditTextFrequency.setText(String.valueOf(mfrequency));
   break;
  case R.id.ButtonADD:
   if(mfrequency <= 1)
    mfrequency = PWM_FREQUENCY_100;
   else
    mfrequency += mfrequencystep;

   mEditTextFrequency.setText(String.valueOf(mfrequency));
   break;
  default:
   break;
  }
}

/**
*
* PWMPlay: 啟動蜂鳴器，並播放。
*
* @param   frequency 播放頻率
* @return true 表示播放成功；否則，表示播放失敗。
* @throws
*/
public boolean PWMPlay(int frequency)
{
  boolean ret = false;
  int result = -1;

result = HardwareControler.PWMPlay(frequency);

  if(result == 0)
   ret = true;
  else
   ret = false;

return ret;
}

/**
*
* PWMStop: 停止並關閉蜂鳴器。
*
* @param
* @return true 表示停止成功；否則，表示停止失敗。
* @throws
*/
public boolean PWMStop(){
  boolean ret = false;
  int result = -1;

result = HardwareControler.PWMStop();

  if(result == 0)
   ret = true;
  else
   ret = false;

return ret;
}

/**
*
* PWMThread: PWM播放線程
*
* @param
* @return
* @throws
*/
public class PWMThread extends Thread{

  @Override
  public void run() {
   Log.i(TAG, "PWMThread Start");

   for(int i = 0 ; i < mplaynum; i++ )
   {
    Log.i(TAG, String.valueOf(i));

    if(mStop)
    {
     PWMStop();
     break;
    }

/*啟動蜂鳴器，並使用頻率 mfrequency 進行播放*/
PWMPlay(mfrequency);

    /*等待播放時長 mplayperiod 結束*/
    try {
     sleep(mplayperiod);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }

    /*停止蜂鳴器*/
    PWMStop();

if(mStop)
break;

    /*等待播放間隔 mwaitperiod 結束*/
    try {
     sleep(mwaitperiod);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }

   }
   Log.i(TAG, "PWMThread Stop");
  }
}
}

pwmdemo.xml

[html] <?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:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/TextViewFrequency"
            android:layout_width="80dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/frequency" />

        <Button
            android:id="@+id/ButtonSUB"
            android:layout_width="40dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/sub" />

        <EditText
            android:id="@+id/EditTextFrequency"
            android:layout_width="120dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:inputType="number" />

        <Button
            android:id="@+id/ButtonADD"
            android:layout_width="40dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/add" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/TextViewPlayPeriod"
            android:layout_width="80dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/playperiod" />

        <EditText
            android:id="@+id/EditTextPlayPeriod"
            android:layout_width="200dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:inputType="number" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/TextViewWaitPeriod"
            android:layout_width="80dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/waitperiod" />

        <EditText
            android:id="@+id/EditTextWaitPeriod"
            android:layout_width="200dip"
            android:layout_height="40dip"
            android:layout_gravity="center"
            android:gravity="center"
            android:inputType="number" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/TextViewPlayNum"
            android:layout_width="80dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/playnum" />

        <EditText
            android:id="@+id/EditTextPlayNum"
            android:layout_width="200dip"
            android:layout_height="40dip"
            android:layout_gravity="center"
            android:gravity="center"
            android:inputType="number" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/TextViewStartForEver"
            android:layout_width="80dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/playforever" />

        <ToggleButton
            android:id="@+id/ToggleButtonStartForEver"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center" />

        <LinearLayout
            android:layout_width="10dip"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
        </LinearLayout>

        <TextView
            android:id="@+id/TextViewStartForTimes"
            android:layout_width="80dip"
            android:layout_height="40dip"
            android:gravity="center"
            android:text="@string/playfortimes" />

        <ToggleButton
            android:id="@+id/ToggleButtonStartForTimes"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center" />
    </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>
預覽效果：

摘自 snowdream

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