Java Code Examples for android.support.v7.widget.RecyclerView#getLayoutParams()

/**
 * 设置文件夹列表的高度
 *
 * @param mFolderListRecyclerView 文件夹列表
 * @param mImageSetMask           文件夹列表的灰色透明蒙层
 * @param isCrop                  是否是小红书样式
 */
protected void setFolderListHeight(RecyclerView mFolderListRecyclerView, View mImageSetMask, boolean isCrop) {
    RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) mFolderListRecyclerView.getLayoutParams();
    RelativeLayout.LayoutParams maskParams = (RelativeLayout.LayoutParams) mImageSetMask.getLayoutParams();
    PickerUiConfig uiConfig = getUiConfig();
    int height = uiConfig.getFolderListOpenMaxMargin();
    if (uiConfig.getFolderListOpenDirection() == PickerUiConfig.DIRECTION_BOTTOM) {
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
        if (isCrop) {
            params.bottomMargin = bottomBar != null ? bottomBar.getViewHeight() : 0;
            params.topMargin = (titleBar != null ? titleBar.getViewHeight() : 0) + height;
            maskParams.topMargin = (titleBar != null ? titleBar.getViewHeight() : 0);
            maskParams.bottomMargin = bottomBar != null ? bottomBar.getViewHeight() : 0;
        } else {
            params.bottomMargin = 0;
            params.topMargin = height;
        }
    } else {
        params.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
        if (isCrop) {
            params.bottomMargin = height + (bottomBar != null ? bottomBar.getViewHeight() : 0);
            params.topMargin = titleBar != null ? titleBar.getViewHeight() : 0;
            maskParams.topMargin = (titleBar != null ? titleBar.getViewHeight() : 0);
            maskParams.bottomMargin = bottomBar != null ? bottomBar.getViewHeight() : 0;
        } else {
            params.bottomMargin = height;
            params.topMargin = 0;
        }
    }
    mFolderListRecyclerView.setLayoutParams(params);
    mImageSetMask.setLayoutParams(maskParams);
}
 

HeaderViewHolder(View itemView) {
    super(itemView);
    ButterKnife.bind(this, itemView);
    RecyclerView recyclerView = itemView.findViewById(R.id.recyclerview);
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    recyclerView.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, true));
    recyclerView.setHasFixedSize(true);

    String[] urls = mContext.getResources().getStringArray(R.array.about_social_links);
    if (urls.length == 0) {
        recyclerView.setVisibility(View.GONE);

        subtitle.setPadding(
                subtitle.getPaddingLeft(),
                subtitle.getPaddingTop(),
                subtitle.getPaddingRight(),
                subtitle.getPaddingBottom() + mContext.getResources().getDimensionPixelSize(R.dimen.content_margin));
    } else {
        if (recyclerView.getLayoutParams() instanceof LinearLayout.LayoutParams) {
            LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) recyclerView.getLayoutParams();
            if (urls.length < 7) {
                params.width = LinearLayout.LayoutParams.WRAP_CONTENT;
                params.gravity = Gravity.CENTER_HORIZONTAL;
                recyclerView.setOverScrollMode(View.OVER_SCROLL_NEVER);
            }
        }
        recyclerView.setAdapter(new AboutSocialAdapter(mContext, urls));
    }

    subtitle.setHtml(mContext.getResources().getString(R.string.about_desc));

    CardView card = itemView.findViewById(R.id.card);
    if (!Preferences.get(mContext).isShadowEnabled()) {
        if (card != null) card.setCardElevation(0);

        profile.setShadowRadius(0f);
        profile.setShadowColor(Color.TRANSPARENT);
    }
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (getIntent().getCategories() == null) {
        setResult(RESULT_CANCELED);
        finish();
    }
    setTitle(getIntent().getStringExtra(INTENT_EXTRA_TITLE));
    setContentView(R.layout.dialog_select_element);

    mRecyclerView = (RecyclerView) findViewById(R.id.select_dialog_list);

    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    int minScreenHeight = 600;
    float activityHeightPercentage = 0.5f;
    if (metrics.heightPixels > minScreenHeight) {
        ViewGroup.LayoutParams layoutParams = mRecyclerView.getLayoutParams();
        layoutParams.height = (int) (metrics.heightPixels * activityHeightPercentage);
        mRecyclerView.setLayoutParams(layoutParams);
    }

    // use this setting to improve performance if you know that changes
    // in content do not change the layout size of the RecyclerView
    mRecyclerView.setHasFixedSize(true);

    // use a linear layout manager
    mLayoutManager = new LinearLayoutManager(this);
    mRecyclerView.setLayoutManager(mLayoutManager);

    // specify an adapter (see also next example)
    mAdapter = new SenderAdapter(this);
    mRecyclerView.setAdapter(mAdapter);

    Button addSenderButton = (Button) findViewById(R.id.select_dialog_add);
    addSenderButton.setOnClickListener(mAdapter);
}
 

@Override
public void onPostCallback(int position, T item, int itemLayoutId, ViewHelper helper) {
    RecyclerView rv ;
    if( ( rv = mWeakRecyclerView.get()) == null){
        return;
    }
    mSizeMap.put(position,rv.getLayoutManager().getDecoratedMeasuredHeight(helper.getRootView()));
    rv.getLayoutParams().height = calculateHeight(rv.getLayoutManager(),mSizeMap);
    rv.requestLayout();
}
 

/**
 * adapt to the new height of the list after we swiped or added an element
 * @param context
 * @param view
 */
public void adaptHeight(@NonNull Context context, @NonNull RecyclerView view) {
    view.getLayoutParams().height = GuiUtils.calculateScrollableHeightDependOnChildren(context, getDataSize(), R.dimen.list_item_height);
}