私のアプリには、スピナー、編集テキスト、ボタンなど、多くのチェックボックスがあります。スピナーからアイテムを選択し、特定の値を入力してボタンを押すと、特定のチェックボックスのテキストが変わります。共有設定を追加しましたが、2 つの問題があります。
最初の問題は、sharedpreferences を使用しようとすると、アプリがクラッシュすることです (これらの sharedpreferences を含むアクティビティを開始するとすぐに)。
private String getItemQuantity(String key){
SharedPreferences itemQuantitySP = getApplicationContext().getSharedPreferences("bifrostPrefs", android.content.Context.MODE_PRIVATE);
String sp1 = "sp1";
return itemQuantitySP.getString(key, sp1);
}
private void saveItemQuantity(String key, String value){
SharedPreferences itemQuantitySP = getApplicationContext().getSharedPreferences("bifrostPrefs", android.content.Context.MODE_PRIVATE);
SharedPreferences.Editor editor = itemQuantitySP.edit();
editor.putString(key, value);
editor.commit();
}
共有設定の保存:
if (Integer.parseInt(quantityEditText.getText().toString()) == 250)
{
cb4.setText("Elaborate Totem (" + item1 + "/250)");
saveItemQuantity("cb4", cb4.getText().toString());
cb4.setChecked(true);
}
... //REST OF THE CODE
共有設定の取得:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bifrost);
getItemQuantity("cb4");
... //REST OF THE CODE
2 番目の問題は、多くのチェックボックスがあり、それらすべてにデフォルト値を設定すると非常に時間がかかることです。では、XML からデフォルト値を単純に読み取る方法はありますか? ご覧のとおり、今のところ、sp1 という新しい変数を作成し、それを既定値として設定しましたが、もちろんそれを取り除きたいと考えています。
Logcat ファイル:
06-27 16:31:44.782: E/AndroidRuntime(13139): FATAL EXCEPTION: main
06-27 16:31:44.782: E/AndroidRuntime(13139): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.matthewstudios.gw2legendary/com.example.gw2legendary.Bifrost}: java.lang.ClassCastException: java.lang.Boolean cannot be cast to java.lang.String
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.os.Looper.loop(Looper.java:137)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 16:31:44.782: E/AndroidRuntime(13139): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 16:31:44.782: E/AndroidRuntime(13139): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 16:31:44.782: E/AndroidRuntime(13139): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 16:31:44.782: E/AndroidRuntime(13139): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 16:31:44.782: E/AndroidRuntime(13139): at dalvik.system.NativeStart.main(Native Method)
06-27 16:31:44.782: E/AndroidRuntime(13139): Caused by: java.lang.ClassCastException: java.lang.Boolean cannot be cast to java.lang.String
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.SharedPreferencesImpl.getString(SharedPreferencesImpl.java:224)
06-27 16:31:44.782: E/AndroidRuntime(13139): at com.example.gw2legendary.Bifrost.getItemQuantity(Bifrost.java:849)
06-27 16:31:44.782: E/AndroidRuntime(13139): at com.example.gw2legendary.Bifrost.onCreate(Bifrost.java:152)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.Activity.performCreate(Activity.java:5104)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 16:31:44.782: E/AndroidRuntime(13139): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 16:31:44.782: E/AndroidRuntime(13139): ... 11 more
06-27 16:31:49.391: E/fb4a(:<default>):MmsConfig(13225): MmsConfig.loadMmsSettings mms_config.xml missing uaProfUrl setting
コードの一部:
public void submitQuantityButton (View v){
final Spinner sItems = (Spinner)findViewById(R.id.spinner1);
final Context context = this;
final CheckBox cb4 = (CheckBox) findViewById(R.id.checkBox4);
final CheckBox cb5 = (CheckBox) findViewById(R.id.checkBox5);
final CheckBox cb6 = (CheckBox) findViewById(R.id.checkBox6);
final CheckBox cb7 = (CheckBox) findViewById(R.id.checkBox7);
final CheckBox cb9 = (CheckBox) findViewById(R.id.checkBox9);
final CheckBox cb10 = (CheckBox) findViewById(R.id.checkBox10);
final CheckBox cb11 = (CheckBox) findViewById(R.id.checkBox11);
final CheckBox cb12 = (CheckBox) findViewById(R.id.checkBox12);
final CheckBox cb13 = (CheckBox) findViewById(R.id.checkBox13);
final CheckBox cb15 = (CheckBox) findViewById(R.id.checkBox15);
final CheckBox cb16 = (CheckBox) findViewById(R.id.checkBox16);
final CheckBox cb17 = (CheckBox) findViewById(R.id.checkBox17);
final CheckBox cb18 = (CheckBox) findViewById(R.id.checkBox18);
final CheckBox cb25 = (CheckBox) findViewById(R.id.checkBox25);
final CheckBox cb27 = (CheckBox) findViewById(R.id.checkBox27);
final CheckBox cb28 = (CheckBox) findViewById(R.id.checkBox28);
final CheckBox cb29 = (CheckBox) findViewById(R.id.checkBox29);
final CheckBox cb30 = (CheckBox) findViewById(R.id.checkBox30);
final CheckBox cb31 = (CheckBox) findViewById(R.id.checkBox31);
final CheckBox cb33 = (CheckBox) findViewById(R.id.checkBox33);
final CheckBox cb34 = (CheckBox) findViewById(R.id.checkBox34);
final CheckBox cb35 = (CheckBox) findViewById(R.id.checkBox35);
final CheckBox cb36 = (CheckBox) findViewById(R.id.checkBox36);
final CheckBox cb37 = (CheckBox) findViewById(R.id.checkBox37);
//WRONG VALUE ERROR
final AlertDialog.Builder wrongValueBuilder = new AlertDialog.Builder(context);
wrongValueBuilder.setTitle("Warning");
wrongValueBuilder.setMessage("The value you entered is too high!");
wrongValueBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
//EMPTY TEXT ERROR
final AlertDialog.Builder emptyETextErrorBuilder = new AlertDialog.Builder(context);
emptyETextErrorBuilder.setTitle("Warning");
emptyETextErrorBuilder.setMessage("Please enter a value before pressing this button");
emptyETextErrorBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
final int position = sItems.getSelectedItemPosition();
EditText quantityEditText = (EditText)findViewById(R.id.editText1);
switch (position){
case 0:
AlertDialog.Builder spinnerErrorBuilder = new AlertDialog.Builder(context);
spinnerErrorBuilder.setTitle("Warning");
spinnerErrorBuilder.setMessage("Please choose an item from the list above and then enter a certain value");
spinnerErrorBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog spinnerError = spinnerErrorBuilder.create();
spinnerError.show();
break;
case 1:
String item1 = quantityEditText.getText().toString();
if (item1.matches(""))
{
AlertDialog emptyETextError = emptyETextErrorBuilder.create();
emptyETextError.show();
}
else
{
if (Integer.parseInt(quantityEditText.getText().toString()) <= 250)
{
if (Integer.parseInt(quantityEditText.getText().toString()) == 250)
{
cb4.setText("Elaborate Totem (" + item1 + "/250)");
saveItemQuantity("cb4", cb4.getText().toString());
cb4.setChecked(true);
}
else
{
cb4.setText("Elaborate Totem (" + item1 + "/250)");
saveItemQuantity("cb4", cb4.getText().toString());
cb4.setChecked(false);
}
}