为什么我在手机上运行这个应用程序时崩溃了，但在我的平板电脑上却运行良好？当我在手机上运行它时，在 class.java:117 处得到一个java.NullPointerException，这 是我的全部活动。
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;
public class Basketball extends Activity {
int homecount, awaycount, minutes, seconds, sec, min;
TextView home, away, timeEx;
Button stop, start, reset, addhome, subhome, addaway, subaway, home2,
home3, away2, away3;
jakes.apps.scoreboard.CountDownTimer time;
public boolean running;
public int msElapsed;
TextView time2;
long startTime, stopTime;
Button button;
long timeWhenStopped;
int buttonCount, period;
int ending;
MediaPlayer ourSong;
SharedPreferences getPrefs;
getSystemService(Context.VIBRATOR_SERVICE);
RadioButton first, second, third, fourth;
private void change() {
// TODO Auto-generated method stub
if ((buttonCount % 2) == 0) {
start.setText("Start");
stop.setText("Stop");
} else {
start.setText("Resume");
stop.setText("Reset");
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.basketball);
initize();
time = new jakes.apps.scoreboard.CountDownTimer(900000, 1000) {
public void onTick(long millisUntilFinished) {
sec--;
if (sec == 0) {
min--;
sec = 59;
}
if (sec < 10) {
time2.setText(min + ":0" + sec);
}
time2.setText(min + ":" + sec);
}
public void onFinish() {
if (period == 1) {
Toast.makeText(getApplicationContext(),
"First period over", Toast.LENGTH_LONG).show();
fourth.setChecked(false);
third.setChecked(false);
second.setChecked(true);
first.setChecked(false);
period++;
} else if (period == 2) {
Toast.makeText(getApplicationContext(),
"First period over", Toast.LENGTH_LONG).show();
fourth.setChecked(false);
third.setChecked(true);
second.setChecked(false);
first.setChecked(false);
period++;
} else if (period == 3) {
Toast.makeText(getApplicationContext(),
"First period over", Toast.LENGTH_LONG).show();
fourth.setChecked(true);
third.setChecked(false);
second.setChecked(false);
first.setChecked(false);
period++;
} else if (period == 4) {
gameover();
}
};
addhome.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
homecount++;
home.setText(homecount + "");
boolean music = getPrefs.getBoolean("mute", false);
if (music == false) {
ourSong.start();
}
}
});
home2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
homecount = homecount + 2;
home.setText(homecount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
}
}
});
home3.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
homecount = homecount + 3;
home.setText(homecount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
}
}
});
subhome.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
homecount--;
home.setText(homecount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
}
}
});
addaway.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
awaycount++;
away.setText(awaycount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
}
});
away2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
awaycount = awaycount + 2;
away.setText(awaycount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
}
});
away3.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
awaycount = awaycount + 3;
away.setText(awaycount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
}
});
subaway.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
awaycount--;
away.setText(awaycount + "");
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
}
});
}
protected void gameover() {
time2.setText("15:00");
period = 0;
fourth.setChecked(false);
third.setChecked(false);
second.setChecked(false);
first.setChecked(true);
if (homecount < awaycount) {
Toast.makeText(getApplicationContext(), "Away team wins!!!",
Toast.LENGTH_LONG).show();
} else if (homecount > awaycount) {
Toast.makeText(getApplicationContext(), "Home team wins!!!",
Toast.LENGTH_LONG).show();
} else if (homecount == awaycount) {
Toast.makeText(getApplicationContext(), "Its a tie",
Toast.LENGTH_LONG).show();
}
}
private void initize() {
// TODO Auto-generated method stub
time2 = (TextView) findViewById(R.id.timer);
start = (Button) findViewById(R.id.bStart);
stop = (Button) findViewById(R.id.bStop);
home3 = (Button) findViewById(R.id.add3home);
home2 = (Button) findViewById(R.id.add2home);
away3 = (Button) findViewById(R.id.add3away);
away2 = (Button) findViewById(R.id.add2away);
addhome = (Button) findViewById(R.id.bAddHome);
addaway = (Button) findViewById(R.id.bAddAway);
subhome = (Button) findViewById(R.id.bSubHome);
subaway = (Button) findViewById(R.id.bSubAway);
home = (TextView) findViewById(R.id.home);
away = (TextView) findViewById(R.id.away);
running = false;
stopTime = 0;
stopTime = 0;
timeWhenStopped = 0;
buttonCount = 1;
button = (Button) findViewById(R.id.bStart);
button.setOnClickListener(mStartListener);
button = (Button) findViewById(R.id.bStop);
button.setOnClickListener(mStopListener);
ourSong = MediaPlayer.create(Basketball.this, R.raw.click);
getPrefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
min = 14;
sec = 60;
period = 1;
first = (RadioButton) findViewById(R.id.first);
second = (RadioButton) findViewById(R.id.second);
third = (RadioButton) findViewById(R.id.third);
fourth = (RadioButton) findViewById(R.id.fourth);
}
View.OnClickListener mStartListener = new OnClickListener() {
public void onClick(View v) {
start();
}
};
View.OnClickListener mStopListener = new OnClickListener() {
public void onClick(View v) {
stop();
}
};
private void stop() {
// TODO Auto-generated method stub
running = false;
buttonCount++;
change();
time.pause();
if ((buttonCount % 2) == 0) {
reset();
} else {
}
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
}
protected void start() {
if (running == true) {
} else {
if (((buttonCount % 2) == 0)) {
time.resume();
running = true;
buttonCount++;
change();
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
} else {
buttonCount++;
time.start();
running = true;
change();
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
}
}
}
private void reset() {
// TODO Auto-generated method stub
time.cancel();
boolean music = getPrefs.getBoolean("mute", true);
if (music == false) {
ourSong.start();
ourSong.release();
}
buttonCount++;
sec = 1;
time2.setText("15:00");
min = 15;
}
@Override
public boolean onCreateOptionsMenu(android.view.Menu menu) {
// TODO Auto-generated method stub
super.onCreateOptionsMenu(menu);
MenuInflater blowUp = getMenuInflater();
blowUp.inflate(R.menu.main, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.newgame:
Intent NewGame = new Intent("jakes.apps.scoreboard.NEWGAME");
startActivity(NewGame);
break;
case R.id.aboutus:
Intent AboutUs = new Intent("jakes.apps.scoreboard.ABOUTUS");
startActivity(AboutUs);
case R.id.settings:
Intent settings = new Intent("jakes.apps.scoreboard.SETTINGS");
startActivity(settings);
break;
}
return true;
}
}