android - java.lang.ClassCastException : java. lang.String 无法转换为 java.lang.Boolean

Question

我正在尝试通过 Sharedpreferences 获取和设置 bool 值。以下代码在 Marshmallow 上完美运行，但在 Lolipop (5.0.1) 上运行不正常 - 我收到异常: java.lang.ClassCastException: java.lang.String cannot becast to java.lang.Boolean when I call getintroStatus()

有什么帮助吗？

public void setIntrodone(boolean status) {
        editor = settings.edit();
        editor.putBoolean("intro_done_boolean", status);
        editor.commit();
    }

    public boolean getintroStatus() {
        try {
            return settings.getBoolean("intro_done_boolean", false);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }

    }

Logcat 错误:

java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.SharedPreferencesImpl.getBoolean(SharedPreferencesImpl.java:263)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at io.authme.home.MitroApplication.getintroStatus(MitroApplication.java:107)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at io.authme.home.MainActivity.onCreate(MainActivity.java:81)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.Activity.performCreate(Activity.java:6285)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2405)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2535)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.ActivityThread.access$900(ActivityThread.java:154)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1380)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:102)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.os.Looper.loop(Looper.java:148)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:5490)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
04-20 14:06:59.438 1401-1401/io.authme.home W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Answer 1

在我看来，它与 android 版本没有任何关系，也许其他设备优先将相同的键设置为某些字符串，这会导致您出现问题。

我建议您确保不在其他地方使用相同的 key ，如果您确定不这样做，我建议您清除其他设备上的应用数据，然后重试。