尝试从SharedPreference保存/加载数据时出现致命错误

Question

我有一个应用程序，目前无需保存或加载任何类型。我需要它能够保存多达20个不同的变量（字符串/长整数）。

下面是我的.java - 当你看到

时

debtAmount2 = (long) extras.getDouble("outstandingBalance");

它有（长），因为它被“放”为双，但我不能用double做一个sharedpref而且不得不让它变长。

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.debtlist);

    //Name Displays
    TextView debtName1 = (TextView) findViewById(R.id.dispName1);
    TextView debtName2 = (TextView) findViewById(R.id.dispName2);
    TextView debtName3 = (TextView) findViewById(R.id.dispName3);
    TextView debtName4 = (TextView) findViewById(R.id.dispName4);
    TextView debtName5 = (TextView) findViewById(R.id.dispName5);

    //Amount Displays
    TextView debtAmt1 = (TextView) findViewById(R.id.dispBal1);
    TextView debtAmt2 = (TextView) findViewById(R.id.dispBal2);
    TextView debtAmt3 = (TextView) findViewById(R.id.dispBal3);
    TextView debtAmt4 = (TextView) findViewById(R.id.dispBal4);
    TextView debtAmt5 = (TextView) findViewById(R.id.dispBal5);

    //Order Displays
    TextView dispDebtOrder1 = (TextView) findViewById(R.id.dispPayOrder1);
    TextView dispDebtOrder2 = (TextView) findViewById(R.id.dispPayOrder2);
    TextView dispDebtOrder3 = (TextView) findViewById(R.id.dispPayOrder3);
    TextView dispDebtOrder4 = (TextView) findViewById(R.id.dispPayOrder4);
    TextView dispDebtOrder5 = (TextView) findViewById(R.id.dispPayOrder5);

    TextView terminate = (TextView) findViewById(R.id.terminate);

    Integer trigger = 0;
    Integer stopper = 1;
    Bundle extras = getIntent().getExtras();

    if (debtNames1 == null && extras != null && trigger == 0) {
        debtNames1 = extras.getString("nickname");
        debtName1.setText("" + debtNames1);
        debtAmount1 = (long) extras.getDouble("outstandingBalance");
        String amount = String.valueOf(debtAmount1);
        debtAmt1.setText("" + amount);
        trigger++;
    }
    else if (debtNames1 != null) {
        debtName1.setText("" + debtNames1);
        String amount = String.valueOf(debtAmount1);
        debtAmt1.setText("" + amount);  
        stopper++;
    }

    if (debtNames2 == null && extras != null && trigger == 0) {
        debtNames2 = extras.getString("nickname");
        debtName2.setText(debtNames2);
        debtAmount2 = (long) extras.getDouble("outstandingBalance");
        String amount = String.valueOf(debtAmount2);
        debtAmt2.setText("" + amount);
        trigger++;
    }
    else if (debtNames2 != null) {
        debtName2.setText("" + debtNames2);
        String amount = String.valueOf(debtAmount2);
        debtAmt2.setText("" + amount);          
        stopper++;
    }

    if (debtNames3 == null && extras != null && trigger == 0) {
        debtNames3 = extras.getString("nickname");
        debtName3.setText(debtNames3);
        debtAmount3 = (long) extras.getDouble("outstandingBalance");
        String amount = String.valueOf(debtAmount3);
        debtAmt3.setText("" + amount);
        trigger++;
    }
    else if (debtNames3 != null) {
        debtName3.setText("" + debtNames3);
        String amount = String.valueOf(debtAmount3);
        debtAmt3.setText("" + amount);  
        stopper++;
    }

    if (debtNames4 == null && extras != null && trigger == 0) {
        debtNames4 = extras.getString("nickname");
        debtName4.setText(debtNames4);
        debtAmount4 = (long) extras.getDouble("outstandingBalance");
        String amount = String.valueOf(debtAmount4);
        debtAmt4.setText("" + amount);
        trigger++;
    }
    else if (debtNames4 != null) {
        debtName4.setText("" + debtNames4);
        String amount = String.valueOf(debtAmount4);
        debtAmt4.setText("" + amount);  
        stopper++;
    }

    if (debtNames5 == null && extras != null && trigger == 0) {
        debtNames5 = extras.getString("nickname");
        debtName5.setText(debtNames5);
        debtAmount5 = (long) extras.getDouble("outstandingBalance");
        String amount = String.valueOf(debtAmount5);
        debtAmt5.setText("" + amount);
        trigger++;
    }
    else if (debtNames5 != null) {
        debtName5.setText("" + debtNames5);
        String amount = String.valueOf(debtAmount5);
        debtAmt5.setText("" + amount);          
        stopper++;
    }

    if (stopper == 6) {
        terminate.setText("You have too many debts - get a job!");
        }
    else {
        terminate.setText("");
    }

    SharedPreferences sharedPref= getSharedPreferences("savedata", 0);
    SharedPreferences.Editor editor= sharedPref.edit();

    editor.putString("debtNames1", debtNames1);
    editor.putLong("debtAmount1", debtAmount1);
    editor.putLong("debtRate1", debtRate1);
    editor.putInt("debtOrder1", debtOrder1);
    editor.putInt("debtTerm1", debtTerm1);

    editor.putString("debtNames2", debtNames2);
    editor.putLong("debtAmount2", debtAmount2);
    editor.putLong("debtRate2", debtRate2);
    editor.putInt("debtOrder2", debtOrder2);
    editor.putInt("debtTerm2", debtTerm2);

    editor.putString("debtNames3", debtNames3);
    editor.putLong("debtAmount3", debtAmount3);
    editor.putLong("debtRate3", debtRate3);
    editor.putInt("debtOrder3", debtOrder3);
    editor.putInt("debtTerm3", debtTerm3);

    editor.putString("debtNames4", debtNames4);
    editor.putLong("debtAmount4", debtAmount4);
    editor.putLong("debtRate4", debtRate4);
    editor.putInt("debtOrder4", debtOrder4);
    editor.putInt("debtTerm4", debtTerm4);

    editor.putString("debtNames5", debtNames5);
    editor.putLong("debtAmount5", debtAmount5);
    editor.putLong("debtRate5", debtRate5);
    editor.putInt("debtOrder5", debtOrder5);
    editor.putInt("debtTerm5", debtTerm5);

    editor.commit();
}

我收到的致命错误已经解决;然而，当从这个活动转移到我正在“获取”我的额外内容时，应用程序不会保留数据。它每次都在取代debtName1。我没有使用菜单链接，而是＆lt; - 而不是。

Answer 1

SharedPreferences.Editor editor= sharedPref.edit();

        editor.putString("debtNames1", debtNames1);
        editor.putFloat("debtAmount1", amount1);
        editor.putLong("debtRate1", debtRate1);
        editor.putInt("debtTerm1", debtTerm1);

        editor.putString("debtNames2", debtNames2);
        editor.putFloat("debtAmount2", amount2);
        editor.putLong("debtRate2", debtRate2);
        editor.putInt("debtTerm2", debtTerm2);

        editor.putString("debtNames3", debtNames3);
        editor.putFloat("debtAmount3", amount3);
        editor.putLong("debtRate3", debtRate3);
        editor.putInt("debtTerm3", debtTerm3);

        editor.putString("debtNames4", debtNames4);
        editor.putFloat("debtAmount4", amount4);
        editor.putLong("debtRate4", debtRate4);
        editor.putInt("debtTerm4", debtTerm4);

        editor.putString("debtNames5", debtNames5);
        editor.putFloat("debtAmount5", amount5);
        editor.putLong("debtRate5", debtRate5);
        editor.putInt("debtTerm5", debtTerm5);

        editor.putFloat("timeSaved1", timeSaved1);
        editor.putFloat("timeSaved2", timeSaved2);
        editor.putFloat("timeSaved3", timeSaved3);
        editor.putFloat("timeSaved4", timeSaved4);
        editor.putFloat("timeSaved5", timeSaved5);

        editor.putFloat("totalDebt", totalDebt);
        editor.commit();