Fix `DialogFragment` crash questions ... 修复DialogFragment崩溃崩溃的

FixCrashWithDialogFragment

import androidx.fragment.app.DialogFragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import org.jetbrains.annotations.NotNull;

import java.lang.reflect.Field;

/**
 * Fix `DialogFragment` crash questions ... <br /><br />
 *
 * <p>
 * Including the following questions <br />
 *  <ul>
 *      <li> java.lang.IllegalStateException: Fragment already added: DialogFragment </li>
 *          <p>
 *              出现场景: 重复调用show()方法时 <br />
 *              解决方法: 显示前先判断有没有添加过
 *           <p/>
 *      <li> java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState </li>
 *          <p>
 *              出现场景: 当此DialogFragment的show()方法执行是在其所在Activity被销毁后，就会出现此问题 <br />
 *              解决方法: 通过反射实现show()方法逻辑，允许其状态丢失
 *          </p>
 *  </ul>
 *
 * </p>
 *
 * <p>
 * Reference article <br />
 *  <ul>
 *      <li> https://blog.csdn.net/kifile/article/details/47442899 </li>
 *      <li> https://blog.csdn.net/baidu_28027209/article/details/79740209 </li>
 *  </ul>
 *
 * </p>
 */
public class FixCrashWithDialogFragment extends DialogFragment {

    @Override
    public void show(@NotNull FragmentManager manager, String tag) {
        try {
            manager.executePendingTransactions();
            if (!isAdded()) {
                showAllowingStateLoss(manager, tag);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * Show Dialog Allowing State Loss
     *
     * @param manager {@link FragmentManager}
     * @param tag     TAG
     */
    public void showAllowingStateLoss(@NotNull FragmentManager manager, String tag) {
        try {
            Class<?> superclass = this.getClass().getSuperclass();
            if (null != superclass) {
                Field mDismissed = superclass.getDeclaredField("mDismissed");
                Field mShownByMe = superclass.getDeclaredField("mShownByMe");
                mDismissed.setAccessible(true);
                mShownByMe.setAccessible(true);
                mDismissed.setBoolean(this, false);
                mShownByMe.setBoolean(this, true);
            }
        } catch (NoSuchFieldException | IllegalAccessException e) {
            e.printStackTrace();
        }
        FragmentTransaction ft = manager.beginTransaction();
        ft.add(this, tag);
        ft.commitAllowingStateLoss();
    }


}