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我有一組varials（float/integer/string）被保存在sharedpreferences中。當我第一次運行它時，所有3個數據都完美顯示 - 當我第二次運行它時，它保留debtNames1（見下文），但對於amount1，它將其置於0.0。我已經閱讀了腳本，並且嘗試了很長的字符串，並且它也做了同樣的事情。下面是活動：sharedpreference不保存/加載數據
public class DebtList extends Activity {
String debtNames1, debtNames2, debtNames3, debtNames4, debtNames5, debtNames6 = null;
float amount1, amount2, amount3, amount4, amount5, amount6;
long debtRate1, debtRate2, debtRate3, debtRate4, debtRate5, debtRate6;
int debtTerm1, debtTerm2, debtTerm3, debtTerm4, debtTerm5, debtTerm6;
@SuppressLint("ShowToast")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.debtlist);
SharedPreferences sharedPref= getSharedPreferences("chaosdata", 0);
debtNames1 = sharedPref.getString("debtNames1", debtNames1);
debtNames2 = sharedPref.getString("debtNames2", debtNames2);
debtNames3 = sharedPref.getString("debtNames3", debtNames3);
debtNames4 = sharedPref.getString("debtNames4", debtNames4);
debtNames5 = sharedPref.getString("debtNames5", debtNames5);
amount1 = sharedPref.getFloat("debtAmount1", amount1);
amount2 = sharedPref.getFloat("debtAmount2", amount2);
amount3 = sharedPref.getFloat("debtAmount3", amount3);
amount4 = sharedPref.getFloat("debtAmount4", amount4);
amount5 = sharedPref.getFloat("debtAmount5", amount5);
debtRate1 = sharedPref.getLong("debtRate1", debtRate1);
debtRate2 = sharedPref.getLong("debtRate2", debtRate2);
debtRate3 = sharedPref.getLong("debtRate3", debtRate3);
debtRate4 = sharedPref.getLong("debtRate4", debtRate4);
debtRate5 = sharedPref.getLong("debtRate5", debtRate5);
debtTerm1 = sharedPref.getInt("debtTerm1", debtTerm1);
debtTerm2 = sharedPref.getInt("debtTerm2", debtTerm2);
debtTerm3 = sharedPref.getInt("debtTerm3", debtTerm3);
debtTerm4 = sharedPref.getInt("debtTerm4", debtTerm4);
debtTerm5 = sharedPref.getInt("debtTerm5", debtTerm5);
//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);
amount1 = extras.getFloat("outstandingBalance");
debtAmt1.setText("" + (float) amount1);
dispDebtOrder1.setText("1");
trigger++;
}
else if (debtNames1 != null) {
debtName1.setText("" + debtNames1);
debtAmt1.setText("" + (float) amount1);
dispDebtOrder1.setText("1");
stopper++;
}
if (debtNames2 == null && extras != null && trigger == 0) {
debtNames2 = extras.getString("nickname");
debtName2.setText(debtNames2);
amount2 = extras.getFloat("outstandingBalance");
debtAmt2.setText("" + amount2);
dispDebtOrder2.setText("2");
trigger++;
}
else if (debtNames2 != null) {
debtName2.setText("" + debtNames2);
debtAmt2.setText("" + amount2);
dispDebtOrder2.setText("2");
stopper++;
}
if (debtNames3 == null && extras != null && trigger == 0) {
debtNames3 = extras.getString("nickname");
debtName3.setText(debtNames3);
amount3 = extras.getFloat("outstandingBalance");
debtAmt3.setText("" + amount3);
dispDebtOrder3.setText("3");
trigger++;
}
else if (debtNames3 != null) {
debtName3.setText("" + debtNames3);
debtAmt3.setText("" + amount3);
dispDebtOrder3.setText("3");
stopper++;
}
if (debtNames4 == null && extras != null && trigger == 0) {
debtNames4 = extras.getString("nickname");
debtName4.setText(debtNames4);
amount4 = extras.getFloat("outstandingBalance");
debtAmt4.setText("" + amount4);
dispDebtOrder4.setText("4");
trigger++;
}
else if (debtNames4 != null) {
debtName4.setText("" + debtNames4);
debtAmt4.setText("" + amount4);
dispDebtOrder4.setText("4");
stopper++;
}
if (debtNames5 == null && extras != null && trigger == 0) {
debtNames5 = extras.getString("nickname");
debtName5.setText(debtNames5);
amount5 = extras.getFloat("outstandingBalance");
debtAmt5.setText("" + amount5);
dispDebtOrder5.setText("5");
trigger++;
}
else if (debtNames5 != null) {
debtName5.setText("" + debtNames5);
debtAmt5.setText("" + amount5);
dispDebtOrder5.setText("5");
stopper++;
}
if (stopper == 6) {
terminate.setText("Maximum Debts Reached!");
}
else {
terminate.setText("");
}
SharedPreferences.Editor editor= sharedPref.edit();
editor.putString("debtNames1", debtNames1);
editor.putFloat("debtAmount2", 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("debtAmount2", amount3);
editor.putLong("debtRate3", debtRate3);
editor.putInt("debtTerm3", debtTerm3);
editor.putString("debtNames4", debtNames4);
editor.putFloat("debtAmount2", amount4);
editor.putLong("debtRate4", debtRate4);
editor.putInt("debtTerm4", debtTerm4);
editor.putString("debtNames5", debtNames5);
editor.putFloat("debtAmount2", amount5);
editor.putLong("debtRate5", debtRate5);
editor.putInt("debtTerm5", debtTerm5);
editor.commit();
}
正如我所說，當我「獲取」的數據，它顯示完美的第一個if。 第二次我「獲取」數據，它顯示在第二個如果，但第一個如果只顯示債務Names1正確，而不是金額1。
任何想法？
謝謝！
試試這種方式： http://stackoverflow.com/questions/19492710/how-to-use-sharedpreferences-outside-of-oncreate/19492831#19492831 –