Android 我能'；在我的LogCat文件中找不到错误

我的程序崩溃了，我真的不知道。我有logcat错误，但在那里找不到。如蒙协助，将不胜感激。我收到一个空指针异常，但我不知道它会发生在哪里

 package com.example.puremmacompetitionjiujitsuscorer;
//~--- non-JDK imports --------------------------------------------------------

import android.app.Activity;

import android.os.Bundle;
import android.os.CountDownTimer;

import android.view.Menu;
import android.view.View;

import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {    // Starts the main activity
private int            blueScore         = 0;
private int            redScore          = 0;
String                 flag              = "";
Button                 start             = (Button) findViewById(R.id.play);
Button                 stop              = (Button) findViewById(R.id.stop);
final ImageButton      reset             = (ImageButton) findViewById(R.id.resetButton1);
final ImageButton      blue              = (ImageButton) findViewById(R.id.imageButton9);
final ImageButton      red               = (ImageButton) findViewById(R.id.imageButton10);
final ImageButton      sweep             = (ImageButton) findViewById(R.id.imageButton5);
final ImageButton      pass              = (ImageButton) findViewById(R.id.imageButton8);
final ImageButton      mount             = (ImageButton) findViewById(R.id.imageButton4);
final ImageButton      backMount         = (ImageButton) findViewById(R.id.imageButton3);
final ImageButton      kneeOnBelly       = (ImageButton) findViewById(R.id.imageButton7);
final ImageButton      takeDown          = (ImageButton) findViewById(R.id.imageButton6);
final TextView         blueScoreCount    = (TextView) findViewById(R.id.blueScore1);
final TextView         redScoreCount     = (TextView) findViewById(R.id.redScore1);
TextView               timerOnScreen     = (TextView) findViewById(R.id.timer);
EditText               editTimerOnScreen = (EditText) findViewById(R.id.editTimer);
private CountDownTimer countDownTimer;
private long           totalTimeCountInMilliseconds;
private long           timeBlinkInMilliseconds;
private boolean        blink;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    start             = (Button) findViewById(R.id.play);
    stop              = (Button) findViewById(R.id.stop);
    timerOnScreen     = (TextView) findViewById(R.id.timer);
    editTimerOnScreen = (EditText) findViewById(R.id.editTimer);
    stop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (v.getId() == R.id.stop) {
                timerOnScreen.setTextAppearance(getApplicationContext(), R.style.normalText);
                setTimer();
                stop.setVisibility(View.VISIBLE);
                start.setVisibility(View.GONE);
                editTimerOnScreen.setVisibility(View.GONE);
                editTimerOnScreen.setText("");
                startTimer();
            } else if (v.getId() == R.id.play) {
                countDownTimer.cancel();
                start.setVisibility(View.VISIBLE);
                stop.setVisibility(View.GONE);
                editTimerOnScreen.setVisibility(View.VISIBLE);
            }
        }
        private void setTimer() {
            int time = 0;

            if (!editTimerOnScreen.getText().toString().equals("")) {
                time = Integer.parseInt(editTimerOnScreen.getText().toString());
            } else {
                Toast.makeText(MainActivity.this, "Please Enter Minutes...", Toast.LENGTH_LONG).show();
            }

            totalTimeCountInMilliseconds = 60 * time * 1000;
            timeBlinkInMilliseconds      = 30 * 1000;
        }
        private void startTimer() {
            countDownTimer = new CountDownTimer(totalTimeCountInMilliseconds, 500) {

                // 500 means, onTick function will be called at every 500
                // milliseconds

                @Override
                public void onTick(long leftTimeInMilliseconds) {
                    int seconds = (int) (leftTimeInMilliseconds / 1000);

                    if (leftTimeInMilliseconds < timeBlinkInMilliseconds) {
                        timerOnScreen.setTextAppearance(getApplicationContext(), R.style.blinkText);

                        // change the style of the textview .. giving a red
                        // alert style
                        if (blink) {
                            timerOnScreen.setVisibility(View.VISIBLE);

                            // if blink is true, textview will be visible
                        } else {
                            timerOnScreen.setVisibility(View.INVISIBLE);
                        }

                        blink = !blink;    // toggle the value of blink
                    }

                    timerOnScreen.setText(String.format("%02d:%02d:%02d", seconds / 3600,
                            (seconds % 3600) / 60, (seconds % 60)));

                    // format the textview to show the easily readable format
                }
                @Override
                public void onFinish() {

                    // this function will be called when the timecount is finished
                    timerOnScreen.setText("Time up!");
                    timerOnScreen.setVisibility(View.VISIBLE);
                    start.setVisibility(View.VISIBLE);
                    stop.setVisibility(View.GONE);
                    editTimerOnScreen.setVisibility(View.VISIBLE);
                }
            }.start();
        }
    });
    reset.setOnClickListener(new View.OnClickListener() {    // resets the score values in the top corners back to 0
        public void onClick(View u) {
            redScore = 0;
            redScoreCount.setText("" + redScore);
            blueScore = 0;
            blueScoreCount.setText("" + blueScore);
        }
    });
    blue.setOnClickListener(new View.OnClickListener() {    // assigns the value of flag to the blueScore when the blue button is clicked
        public void onClick(View g) {
            flag = "blue";
        }
    });
    red.setOnClickListener(new View.OnClickListener() {    // assigns the value of flag to the redScore when the red button is clicked
        public void onClick(View m) {
            flag = "red";
        }
    });
    takeDown.setOnClickListener(new View.OnClickListener() {    // adds 2 points to either the blue or red score depending on which flag was hit last
        public void onClick(View v) {
            if (!flag.equals("")) {
                ;
            }

            {
                if ("red".equals(flag)) {
                    redScore += 2;
                    redScoreCount.setText("" + redScore);
                } else {
                    blueScore += 2;
                    blueScoreCount.setText("" + blueScore);
                }
            }
        }
    });
    sweep.setOnClickListener(new View.OnClickListener() {    // adds 2 points to either the blue or red score depending on which flag was hit last
        public void onClick(View w) {
            if (!flag.equals("")) {
                ;
            }

            {
                if ("red".equals(flag)) {
                    redScore += 2;
                    redScoreCount.setText("" + redScore);
                } else {
                    blueScore += 2;
                }

                blueScoreCount.setText("" + blueScore);
            }
        }
    });
    pass.setOnClickListener(new View.OnClickListener() {    // adds 3 points to either the blue or red score depending on which flag was hit last
        public void onClick(View q) {
            if (!flag.equals("")) {
                ;
            }

            {
                if ("red".equals(flag)) {
                    redScore += 3;
                    redScoreCount.setText("" + redScore);
                } else {
                    blueScore += 3;
                }

                blueScoreCount.setText("" + blueScore);
            }
        }
    });
    mount.setOnClickListener(new View.OnClickListener() {    // adds 4 points to either the blue or red score depending on which flag was hit last
        public void onClick(View t) {
            if (!flag.equals("")) {
                ;
            }

            {
                if ("red".equals(flag)) {
                    redScore += 4;
                    redScoreCount.setText("" + redScore);
                } else {
                    blueScore += 4;
                }

                blueScoreCount.setText("" + blueScore);
            }
        }
    });
    backMount.setOnClickListener(new View.OnClickListener() {    // adds 4 points to either the blue or red score depending on which flag was hit last
        public void onClick(View s) {
            if (!flag.equals("")) {
                ;
            }

            {
                if ("red".equals(flag)) {
                    redScore += 4;
                    redScoreCount.setText("" + redScore);
                } else {
                    blueScore += 4;
                }

                blueScoreCount.setText("" + blueScore);
            }
        }
    });
    kneeOnBelly.setOnClickListener(new View.OnClickListener() {    // adds 2 points to either the blue or red score depending on which flag was hit last
        public void onClick(View g) {
            if (!flag.equals("")) {
                ;
            }

            {
                if ("red".equals(flag)) {
                    redScore += 2;
                    redScoreCount.setText("" + redScore);
                } else {
                    blueScore += 2;
                }

                blueScoreCount.setText("" + blueScore);
            }
        }
    });
}

public boolean onCreateOptionsMenu(Menu menu) {    // I have no idea what this does. It's just automatically generated

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);

    return true;
}

package com.example.puremcompetitionjiujitsuscorer；
//~---非JDK导入--------------------------------------------------------
导入android.app.Activity；
导入android.os.Bundle；
导入android.os.CountDownTimer；
导入android.view.Menu；
导入android.view.view；
导入android.widget.Button；
导入android.widget.EditText；
导入android.widget.ImageButton；
导入android.widget.TextView；
导入android.widget.Toast；
公共类MainActivity扩展活动{//启动主活动
私有整数蓝核=0；
私有整数redScore=0；
字符串标志=”；
按钮开始=（按钮）findViewById（R.id.play）；
按钮停止=（按钮）findViewById（R.id.stop）；
最终ImageButton reset=（ImageButton）findViewById（R.id.resetButton1）；
最终ImageButton蓝色=（ImageButton）findViewById（R.id.imageButton9）；
最终ImageButton红色=（ImageButton）findViewById（R.id.imageButton10）；
最终ImageButton扫描=（ImageButton）findViewById（R.id.imageButton5）；
最终ImageButton过程=（ImageButton）findViewById（R.id.imageButton8）；
最终ImageButton安装=（ImageButton）findViewById（R.id.imageButton4）；
最终ImageButton背面安装=（ImageButton）findViewById（R.id.imageButton3）；
最终ImageButton KneeonBell=（ImageButton）findViewById（R.id.imageButton7）；
最终ImageButton取下=（ImageButton）findViewById（R.id.imageButton6）；
最终TextView BlueCoreCount=（TextView）findViewById（R.id.BlueCore1）；
最终TextView redScoreCount=（TextView）findViewById（R.id.redScore1）；
TextView timerOnScreen=（TextView）findViewById（R.id.timer）；
EditText editTimerOnScreen=（EditText）findViewById（R.id.editTimer）；
私人倒计时；
私有长TotalTimeCountin毫秒；
私有长时间闪烁（毫秒）；
私有布尔闪烁；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
开始=（按钮）findViewById（R.id.play）；
停止=（按钮）findViewById（R.id.stop）；
timerOnScreen=（TextView）findViewById（R.id.timer）；
editTimerOnScreen=（EditText）findViewById（R.id.editTimer）；
stop.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
if（v.getId（）==R.id.stop）{
timerOnScreen.settextearance（getApplicationContext（），R.style.normalText）；
setTimer（）；
stop.setVisibility（View.VISIBLE）；
start.setVisibility（View.GONE）；
editTimerOnScreen.setVisibility（View.GONE）；
editTimerOnScreen.setText（“”）；
startTimer（）；
}else if（v.getId（）==R.id.play）{
倒计时。取消（）；
start.setVisibility（View.VISIBLE）；
stop.setVisibility（View.GONE）；
editTimerOnScreen.setVisibility（View.VISIBLE）；
}
}
私有void setTimer（）{
整数时间=0；
如果（！editTimerOnScreen.getText（）.toString（）.equals（“”）{
time=Integer.parseInt（editTimerOnScreen.getText（）.toString（））；
}否则{
Toast.makeText（MainActivity.this，“请输入分钟…”，Toast.LENGTH_LONG.show（）；
}
TotalTimeCountinMillics=60*时间*1000；
TimeBlinkin毫秒=30*1000；
}
私有void startTimer（）{
countDownTimer=新的countDownTimer（TotalTimeCountin毫秒，500）{
//500表示每500次调用一次onTick函数
//毫秒
@凌驾
公共void onTick（长LeftTimein毫秒）{
int秒=（int）（leftTimein毫秒/1000）；
if（LeftTimeinMillions