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我制作了应用程序。当我按下切换按钮时，它将设置警报。然后，当我再按一次切换按钮 1 时，它将取消警报。另外，如果我重新启动应用程序，在重新启动应用程序之前设置的内容并没有改变。

但是问题来了，当我启动它时效果很好，但是当我重新启动它以取消警报时，它是强制关闭的。

所以我应该怎么做才能使它没有错误？

这是代码。

 @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    SharedPreferences pref = getSharedPreferences("pref", 0);
    ToggleButton tglbutton = (ToggleButton)findViewById(R.id.toggleButton1);
    TextView text1 = (TextView) findViewById(R.id.View1); 
    Boolean tgl = pref.getBoolean("toggleButton", false);
    String textData = pref.getString("text1", "");
    tglbutton.setChecked(tgl);
    text1.setText(textData);

}
   public void onToggleClicked(View view) {

        boolean on = ((ToggleButton) view).isChecked();
    if(on){


    alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
    int month = calendar.get(Calendar.MONTH) + 1;
    int day = calendar.get(Calendar.DAY_OF_MONTH);

    {
        calendar0606.set(Calendar.MONTH, Calendar.JUNE);
        calendar0606.set(Calendar.DAY_OF_MONTH, 6);
        int month0606 = calendar0606.get(Calendar.MONTH) + 1;
        //month2= MARCH
        int day0606 = calendar0606.get(Calendar.DAY_OF_MONTH);
        if(month > month0606){
            int year = calendar0606.get(Calendar.YEAR)+1;
            calendar0606.set(Calendar.YEAR, year);

        }
        else if(month <= month0606)
        {if(day >day0606){

            int year = calendar0606.get(Calendar.YEAR)+1;
            calendar0606.set(Calendar.YEAR, year);

        }}
                                                }
                     TextView text1 = (TextView) findViewById(R.id.View1); 

        text1.setText(R.string.working);}else{



            alarm.cancel(pendingIntent0606());

            return;

        }

        setAlarm0606();}

public void onStop(){
super.onStop();
SharedPreferences pref = getSharedPreferences("pref", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = pref.edit();
ToggleButton tglbutton = (ToggleButton)findViewById(R.id.toggleButton1);
TextView text1 = (TextView) findViewById(R.id.View1); 
editor.putBoolean("toggleButton", tglbutton.isChecked());
editor.putString("text1", text1.getText().toString());
editor.commit();
      }

日志猫

03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.207: D/szipinf(7912): Initializing inflate state
03-01 22:37:59.207: D/szipinf(7912): Initializing zlib to inflate
03-01 22:37:59.257: D/dalvikvm(7912): GC_EXTERNAL_ALLOC freed 52K, 49% free 2783K/5379K, external 1973K/2108K, paused 31ms
03-01 22:39:23.089: D/dalvikvm(7912): Debugger has detached; object registry had 1 entries
03-01 22:41:02.128: I/dalvikvm(8188): Total arena pages for JIT: 11
03-01 22:41:12.167: D/AndroidRuntime(8188): Shutting down VM
03-01 22:41:12.167: W/dalvikvm(8188): threadid=1: thread exiting with uncaught exception (group=0x4001e578)
03-01 22:41:12.210: E/AndroidRuntime(8188): FATAL EXCEPTION: main
03-01 22:41:12.210: E/AndroidRuntime(8188): java.lang.IllegalStateException: Could not execute method of the activity
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.view.View$1.onClick(View.java:2154)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.view.View.performClick(View.java:2538)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.widget.CompoundButton.performClick(CompoundButton.java:99)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.view.View$PerformClick.run(View.java:9152)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.os.Handler.handleCallback(Handler.java:587)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.os.Handler.dispatchMessage(Handler.java:92)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.os.Looper.loop(Looper.java:130)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.app.ActivityThread.main(ActivityThread.java:3687)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at java.lang.reflect.Method.invokeNative(Native Method)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at java.lang.reflect.Method.invoke(Method.java:507)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at dalvik.system.NativeStart.main(Native Method)
03-01 22:41:12.210: E/AndroidRuntime(8188): Caused by: java.lang.reflect.InvocationTargetException
03-01 22:41:12.210: E/AndroidRuntime(8188):     at java.lang.reflect.Method.invokeNative(Native Method)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at java.lang.reflect.Method.invoke(Method.java:507)
03-01 22:41:12.210: E/AndroidRuntime(8188):     at android.view.View$1.onClick(View.java:2149)
03-01 22:41:12.210: E/AndroidRuntime(8188):     ... 12 more
03-01 22:41:12.210: E/AndroidRuntime(8188): Caused by: java.lang.NullPointerException
03-01 22:41:12.210: E/AndroidRuntime(8188):     at com.simpson.knflagralarm.MainActivity.onToggleClicked(MainActivity.java:226)
03-01 22:41:12.210: E/AndroidRuntime(8188):     ... 15 more
4

1 回答 1

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阅读它说的日志：

com.simpson.knflagralarm.MainActivity.onToggleClicked 处的 java.lang.NullPointerException（MainActivity.java:226）

这是你的问题

于 2013-10-29T13:53:19.233 回答