Android 开发：性能优化（枚举类优化）

Enum枚举替代方案

public static final String OFF_LINE = "OFF_LINE";
    public static final String TEST = "TEST";
    public static final String EMULATION = "EMULATION";
    public static final String ON_LINE = "ON_LINE";

    @StringDef({OFF_LINE, TEST,EMULATION,ON_LINE})
    @Retention(RetentionPolicy.SOURCE)
    public @interface Apis {}

    @Apis String apis = OFF_LINE;

    public void ms (@Apis String s){
        switch (s){
            case OFF_LINE:
                break;
            case TEST:
                break;
            case EMULATION:
                break;
            case ON_LINE:
                break;
        }
    }