DialogFragment探索与实现

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关于标题

哎,这该死的标题,又把大伙骗进来了,以为是高大上,其实只是一个小封装,大佬们别喷。

EverythingDialogFragment

随着业务增加,各种各样的dialog样式需要实现,传统需要写的各种各样的dialog,一是不好维护,二是在多人开发的时候,每个人写的dialog会不同,导致代码复用差,因为基于这些原因,本人根据DialogFragment的优势,自定义了算是基类的DialogFragment,受个人经验和能力,代码上仍有不足之处,还请大佬们多多指教。

关于命名

本来想取一个BaseDialogFragment,但名字太普通了,所以必须要取个花里胡哨的名字,但又不能太高调,但又不能失内涵,然后我谷歌翻译很多词汇,终于找到Everything,哈哈,大伙别喷我。

public class EverythingDialogFragment extends DialogFragment {

  private View mRootView;
    private Dialog mDialog;
    private Context mContext;
    private float widthPercentSize;
    private float heightPercentSize;
    private int layoutResID;
    private EverythingDialogHolder holder;
    private int[] viewIds;
    private int theme;
    private boolean cancel;
    private boolean touchOutside;
    private int animations;

    public static EverythingDialogFragment newInstance() {
        EverythingDialogFragment fragment = new EverythingDialogFragment();
        return fragment;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        mDialog = getDialog();
        if (mDialog != null) {
            try {
                mDialog.setOnDismissListener(null);
                mDialog.setOnCancelListener(null);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mContext = context;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (theme != 0){
            setStyle(DialogFragment.STYLE_NORMAL, theme);
        }
    }


    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        if (mRootView==null){
            mRootView = inflater.inflate(layoutResID, container, false);
            setDialogSize(widthPercentSize, heightPercentSize);
        }
        return mRootView;
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        mDialog = getDialog();
       
        holder = EverythingDialogHolder.create(mRootView,this);
        if (viewConvertListener!=null){
            viewConvertListener.convertView(holder,this);
        }
        if (holder!=null && viewIds!=null && viewIds.length>0){
            holder.addChildClickListener(viewIds);
        }

        if (mDialog != null) {
            mDialog.setCanceledOnTouchOutside(touchOutside);
            mDialog.setOnKeyListener((dialog, keyCode, event) -> cancel);
            Window window = mDialog.getWindow();
            window.setWindowAnimations(animations);
        }
    }

    /**
     * 其他区域是否点击消失
     * @param touchOutside
     * @return
     */
    public EverythingDialogFragment setCanceledOnTouchOutside(boolean touchOutside){
        this.touchOutside=touchOutside;
        return this;
    }


    public EverythingDialogFragment setWindowAnimations(@StyleRes int resId) {
      this.animations=resId;
      return this;
    }

    /**
     * 屏蔽返回键
     * @param cancel
     * @return
     */
    public EverythingDialogFragment setCanceledOnTouch(boolean cancel){
        this.cancel=cancel;
        return this;
    }

    /**
     * 设置Style
     * @param theme
     * @return
     */
    public EverythingDialogFragment setStyle(int theme){
        this.theme=theme;
        return this;
    }

    /**
     * 设置布局
     * @param layoutResID
     * @return
     */
    public EverythingDialogFragment setContentView(@LayoutRes int layoutResID) {
        this.layoutResID = layoutResID;
        return this;
    }

    /**
     * 设置显示的宽
     * @param widthPercentSize
     * @return
     */
    public EverythingDialogFragment setWidthPercentSize(float widthPercentSize) {
        this.widthPercentSize = widthPercentSize;
        return this;
    }

    /**
     * 显示高
     * @param heightPercentSize
     * @return
     */
    public EverythingDialogFragment setHeightPercentSize(float heightPercentSize) {
        this.heightPercentSize = heightPercentSize;
        return this;
    }

    private void setFragmentManager(FragmentManager manager) {
        try {
            manager.beginTransaction().remove(this).commitAllowingStateLoss();
            super.show(manager, getClass().getSimpleName());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public EverythingDialogFragment show(Object obj){
        if (obj!=null){
            if (obj instanceof FragmentActivity){
                FragmentActivity activity = (FragmentActivity) obj;
                setFragmentManager(activity.getSupportFragmentManager());
            }else if (obj instanceof Fragment){
                Fragment fragment = (Fragment) obj;
                setFragmentManager(fragment.getFragmentManager());
            }else {
                throw new IllegalArgumentException("not is FragmentManager");
            }
        }
        return this;
    }


    /**
     * 设置显示屏幕大小
     */
    private void setDialogSize(float widthPercent, float heightPercent) {
        DisplayMetrics dm = new DisplayMetrics();
        FragmentActivity activity = getActivity();
        Dialog dialog = getDialog();
        if (activity != null && dialog != null) {
            activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
            Window window = dialog.getWindow();
            if (window != null) {
                window.getDecorView().setPadding(0, 0, 0, 0);
                WindowManager.LayoutParams lp = window.getAttributes();

                lp.width = widthPercent == 0 ?
                        WindowManager.LayoutParams.WRAP_CONTENT : widthPercent == 1 ?
                        WindowManager.LayoutParams.MATCH_PARENT : (int) (dm.widthPixels * widthPercent);

                lp.height = heightPercent == 0 ?
                        WindowManager.LayoutParams.WRAP_CONTENT : heightPercent == 1 ?
                        WindowManager.LayoutParams.MATCH_PARENT : (int) (dm.heightPixels * heightPercent);

                window.setAttributes(lp);
                window.setBackgroundDrawable(new ColorDrawable());
            }
        }
    }


    /**
     * 可以暴露所有的view
     */
    public interface ConvertViewListener{
        void convertView(EverythingDialogHolder holder, final EverythingDialogFragment dialog);
    }

    private ConvertViewListener viewConvertListener;

    public EverythingDialogFragment setConvertViewListener(ConvertViewListener l){
        viewConvertListener=l;
        return this;
    }

    private OnChildClickListener childClickListener;

    public OnChildClickListener getOnChildClickListener() {
        return childClickListener;
    }


    /**
     * 设置子View Listener
     */
    public EverythingDialogFragment setOnChildClickListener(OnChildClickListener l, @IdRes final int ...viewIds){
        childClickListener=l;
        addIdRes(viewIds);
        return this;
    }

    /**
     * 设置子View Listener
     */
    public EverythingDialogFragment setOnChildClickListener(OnChildClickListener l){
        childClickListener=l;
        return this;
    }

    /**
     * 子view添加
     * @param viewIds
     * @return
     */
    public EverythingDialogFragment addIdRes(@IdRes final int ...viewIds){
        this.viewIds=viewIds;
        return this;
    }

}
public class EverythingDialogHolder {

    private final SparseArray<View> views;
    private final View convertView;
    private final LinkedHashSet<Integer> childClickViewIds;
    private final EverythingDialogFragment dialogFragment;


    public EverythingDialogHolder(View convertView, EverythingDialogFragment dialogFragment) {
        this.convertView = convertView;
        this.views = new SparseArray<>();
        this.childClickViewIds =new LinkedHashSet<>();
        this.dialogFragment=dialogFragment;
    }

    public static EverythingDialogHolder create(View view, EverythingDialogFragment dialogFragment) {
        return new EverythingDialogHolder(view,dialogFragment);
    }
    
    public <T extends View> T findViewById(@IdRes int viewId) {
        View view = views.get(viewId);
        if (view == null) {
            view = convertView.findViewById(viewId);
            views.put(viewId, view);
        }
        return (T) view;
    }

    /**
     * 添加子view Listener
     * @param viewIds
     * @return
     */
    public EverythingDialogHolder addChildClickListener(@IdRes final int ...viewIds) {
        for (int viewId : viewIds) {
            childClickViewIds.add(viewId);
            final View view = findViewById(viewId);
            if (view != null) {
                if (!view.isClickable()) {
                    view.setClickable(true);
                }
                view.setOnClickListener(v -> {
                    if (dialogFragment !=null && dialogFragment.getOnChildClickListener() != null){
                        dialogFragment.getOnChildClickListener().onChildViewClick(dialogFragment,v);
                    }
                });
            }
        }
        return this;
    }
    
}
public interface OnChildClickListener {
    void onChildViewClick(EverythingDialogFragment dialog, View v);
}

使用方法(一)

  EverythingDialogFragment.
                newInstance().
                setWidthPercentSize(0.8f).
                setHeightPercentSize(0.8f).
                setContentView(R.layout.dialog_test).
                show(this).
                setConvertViewListener((holder, dialog) -> {
                    TextView tv1 = holder.findViewById(R.id.tv1);
                });

使用方法(二)

  EverythingDialogFragment.
                newInstance().
                setWidthPercentSize(0.8f).
                setHeightPercentSize(0.8f).
                setContentView(R.layout.dialog_test).
                addIdRes(R.id.tv1,R.id.tv2).
                show(this).
                setOnChildClickListener((dialog, v) -> {
                    if (R.id.tv1 == v.getId()){
                        //do something
                    }
                });