Android高级POS开发

一、类

1.1基础BasicActivity需要继承AppCompatActivity和实现PosViewLoad接口

PosViewLoad接口如下所示：

public interface PosViewLoad {
    void onBeforeViewLoad(BasicActivity activity,int resId);
    void onAfterViewLoad(BasicActivity activity,int resId);
}

onBeforeViewLoad表示Activity加载前的回调

onAfterViewLoad表示加载后的回调

1.2Bundle SavedInstance冷却包的处理

protected void defSaveInstanceState(Bundle outState){
    try{
        Log.d("PPOSX", "defSaveInstanceState do.... on "+this.getClass().getName());
        Field[] fields=this.getClass().getDeclaredFields();
        for(Field f:fields){
            PosSerializableFlag psf=f.getAnnotation(PosSerializableFlag.class);
            if(psf!=null){
                f.setAccessible(true);
                Object obj=f.get(this);
                if(obj!=null) {
                    String sav_key = this.getClass().getName().replace('.', '$') + "$" + f.getName();
                    if (obj instanceof Integer) {
                        outState.putInt(sav_key, (Integer) obj);
                    } else if (obj instanceof Double) {
                        outState.putDouble(sav_key, (Double) obj);
                    } else if (obj instanceof Long) {
                        outState.putLong(sav_key, (Long) obj);
                    } else if (obj instanceof String) {
                        outState.putString(sav_key, obj.toString());
                    } else {
                        outState.putSerializable(sav_key, (Serializable) obj);
                    }
                }
            }
        }
    }catch (Exception ex){
        PosUtil.tryError(ex);
    }
}

Activity中有@PosSerializableFlag 注解的属性，程序就会把值存放到冷却包处理。