不会使用我的Sql数据库

时间:2013-10-01 18:08:10

标签: android sqlite sharedpreferences

嘿,我的SQLite数据库有问题,当我关闭我的应用程序然后我尝试保存我的值时,它在我的logcat中给了我一个错误。

应用程序应该在我使用sharedPreferences关闭应用程序时存储数据,当我重新打开应用程序应该从我的主类发送数据时,当我按下停止按钮时,数据应该已保存到我的SQLite数据库

为什么这不可能?

可以在不关闭应用的情况下执行此操作。

感谢您的帮助。

我的主要课程:

public class Main extends Activity{

Button bStart, bStop;
TextView tvView;
Spinner spinner1;
boolean stopValue;
int startkilometer;
String date;



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

    bStart = (Button) findViewById(R.id.bStart);
    tvView = (TextView) findViewById(R.id.tvView);
    spinner1 = (Spinner) findViewById(R.id.spinner1);


    SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);



    stopValue = pref.getBoolean("stopper", false);
    startkilometer = pref.getInt("startkm", 0);
    date = pref.getString("datoen", "");



    date = getIntent().getStringExtra("datoen");
    startkilometer = getIntent().getIntExtra("startkm", startkilometer);
    stopValue = getIntent().getBooleanExtra("stopper", stopValue);


    if(stopValue == false){
        bStart.setText("Start");
        bStart.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent start = new Intent("com.uniqueapps.runner.START");
                startActivity(start);
            }
        });
    }

    if(stopValue){
        bStart.setText("Stop");
        bStart.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent stop = new Intent("com.uniqueapps.runner.STOP");
                stop.putExtra("startkm", startkilometer);
                stop.putExtra("datoen", date);
                startActivity(stop);
            }
        });
    }

@Override
protected void onPause() {
    // TODO Auto-generated method stub

    SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
      SharedPreferences.Editor editor = pref.edit();
      editor.putBoolean("stopper", stopValue);
      editor.putInt("startkm", startkilometer);
      editor.putString("datoen", date);
      editor.commit();

    super.onPause();
}

我的停课:

public class Stop extends Main implements OnClickListener {

Button bStop;
EditText sqllocations, kilometer;
int startkilometer, slutkilometer, kortekm;
String locations;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.stop);
    bStop = (Button) findViewById(R.id.bstopTur);
    bStop.setOnClickListener(this);
    sqllocations = (EditText) findViewById(R.id.locations);
    kilometer = (EditText) findViewById(R.id.drovenKilometer);


    startkilometer = getIntent().getIntExtra("startkm", 0);
    date = getIntent().getStringExtra("datoen");

    sqllocations.setText("Unknown");
}

@Override
public void onClick(View v) {

    // TODO Auto-generated method stub

    switch(v.getId()){

    case R.id.bstopTur:

        String locations = sqllocations.getText().toString();
        slutkilometer = Integer.valueOf(kilometer.getText().toString()); 
        int kortekm = (slutkilometer - startkilometer);

        try{

        KilometerSQL entry = new KilometerSQL(this);
        entry.open();
        entry.createEntry(date, kortekm, locations); ----> Line 60
        entry.close();
        }catch(Exception e){
            e.printStackTrace();
        }

         Intent menu = new Intent("com.uniqueapps.runner.MENU");
            menu.putExtra("stopper", false);
            startActivity(menu);
            break;
    }
}

}

我的KilometerSQL:

public class KilometerSQL {

public static final String KEY_ROWID = "date";
public static final String KEY_KILOMETER = "kilometer";
public static final String KEY_LOCATIONS = "locations";

private static final String DATABASE_NAME = "Kilometerdb";
private static final String DATABASE_TABLE = "kilometertable";
private static final int DATABASE_VERSION = 1;

private DbHelper ourHelper;
private final Context ourContext;
private SQLiteDatabase ourDatabase;

private static class DbHelper extends SQLiteOpenHelper{

    public DbHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        // TODO Auto-generated constructor stub
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        // TODO Auto-generated method stub
        db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" +
                KEY_ROWID + " TEXT NOT NULL, " +
                KEY_KILOMETER + " INTEGER, " +
                KEY_LOCATIONS + " TEXT NOT NULL);"


                );
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // TODO Auto-generated method stub
        db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
        onCreate(db);
    }


    }

public KilometerSQL (Context c){
    ourContext = c;
}

public KilometerSQL open(){
    ourHelper = new DbHelper(ourContext);
    ourDatabase = ourHelper.getWritableDatabase();
    return this;
}

public void close(){
    ourHelper.close();
}

public long createEntry(String date, int kortekm, String locations) {
    // TODO Auto-generated method stub
    ContentValues cv = new ContentValues();
    cv.put(KEY_ROWID, date);
    cv.put(KEY_KILOMETER, kortekm);
    cv.put(KEY_LOCATIONS, locations);
    return ourDatabase.insert(DATABASE_TABLE, null, cv); ----> Line 74
}

public String getData() {
    // TODO Auto-generated method stub
    String [] columns = new String []{ KEY_ROWID, KEY_KILOMETER, KEY_LOCATIONS};
    Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
    String result = "";

    int iDate = c.getColumnIndex(KEY_ROWID);
    int iKilometer = c.getColumnIndex(KEY_KILOMETER);
    int iLocations = c.getColumnIndex(KEY_LOCATIONS);

    for (c.moveToFirst();!c.isAfterLast();c.moveToNext()){
        result = result + c.getString(iDate) + " " + c.getString(iKilometer) + " " + c.getString(iLocations) + "\n";
    }

    return result;
}


}

我的Logcat:

10-01 13:54:25.865: E/SQLiteDatabase(3199): Error inserting kilometer=30 date=null locations=Unknown
10-01 13:54:25.865: E/SQLiteDatabase(3199): android.database.sqlite.SQLiteConstraintException: kilometertable.date may not be NULL (code 19)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:782)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1469)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at com.uniqueapps.runner.KilometerSQL.createEntry(KilometerSQL.java:74)  
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at com.uniqueapps.runner.Stop.onClick(Stop.java:60)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.view.View.performClick(View.java:4240)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.view.View$PerformClick.run(View.java:17721)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.os.Handler.handleCallback(Handler.java:730)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.os.Handler.dispatchMessage(Handler.java:92)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.os.Looper.loop(Looper.java:137)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at android.app.ActivityThread.main(ActivityThread.java:5103)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at java.lang.reflect.Method.invokeNative(Native Method)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at java.lang.reflect.Method.invoke(Method.java:525)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-01 13:54:25.865: E/SQLiteDatabase(3199):     at dalvik.system.NativeStart.main(Native Method)

0 个答案:

没有答案