Question

我需要设计一个内部有一张或多张卡的布局。问题是卡片的数量在运行时是已知的，我需要每张卡片获得与其他卡片完全相同的高度。因此，如果我有两张卡片，每张卡片的weight为0.5

当点击一张卡时，此布局应该按下所有其他卡片。

如何实现这一目标？我应该开发自定义视图吗？

更新

我尝试过RecyclerView，我在适配器中添加了以下内容

@Override
    public void onBindViewHolder(CardViewHolder holder, int position) {
        Card card = cards.get(position);
        DisplayMetrics displayMetrics = new DisplayMetrics();
        ((AppCompatActivity) context).getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        holder.tenantId.setText(card.getTenantName());
        holder.tenantUsername.setText(card.getUsername());
        holder.containerTenant.setBackgroundColor(Color.RED);
        holder.tenantLogo.setImageResource(card.getImgResource());

        holder.itemView.getLayoutParams().height = (int) (displayMetrics.heightPixels / (cards.size() * 1.0f));
    }

但它仍在推动第二张卡，用户需要滚动才能看到第二张卡。

Answer 1

您应将卡片放入LinearLayout并以编程方式设置重量。

float cardWeight = 1 / numOfCards;
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
    LayoutParams.MATCH_PARENT,
    LayoutParams.MATCH_PARENT,
    cardWeight
);
CARD1.setLayoutParams(param);

LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
    LayoutParams.MATCH_PARENT,
    LayoutParams.MATCH_PARENT,
    cardWeight
);
CARD2.setLayoutParams(param);

LINEARPARENT.setWeightSum(1f);
LINEARPARENT.addView(CARD1);
LINEARPARENT.addView(CARD2);

关于下推式，您可以将点击的卡片设置为1f（或线性权重）的重量，然后移除其他卡片并在另一个布局上进行充气。

Answer 2

在玩了@yasin回答之后，我找到了部分解决方案

MainActivity.java

    private LinearLayout mLinearLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_2);

        mLinearLayout = (LinearLayout) findViewById(R.id.ll);

        List<Card> cards = new ArrayList<>();
        Card c1 = new Card(R.drawable.ic_1, "Username 1", "Tenant 1");
        Card c2 = new Card(R.drawable.ic_2, "Username 2", "Tenant 2");
        Card c3 = new Card(R.drawable.ic_3, "Username 3", "Tenant 3");
        Card c4 = new Card(R.drawable.ic_4, "Username 4", "Tenant 4");
        Card c5 = new Card(R.drawable.ic_5, "Username 5", "Tenant 5");

        cards.add(c1);
        cards.add(c2);
        cards.add(c3);
        cards.add(c4);
        cards.add(c5);

        mLinearLayout.setWeightSum(1f);


        for (Card c : cards) {
            View cardView = getLayoutInflater().inflate(R.layout.tenant_card, null);
            TextView tvTenant = (TextView) cardView.findViewById(R.id.tv_tenant);
            TextView tvUsername = (TextView) cardView.findViewById(R.id.tv_username);
            ImageView imgLogo = (ImageView) cardView.findViewById(R.id.img_logo);
            tvTenant.setText(c.getTenantName());
            tvUsername.setText(c.getUsername());
            imgLogo.setImageResource(c.getImgResource());
            float cardWeight = 1 / (cards.size() * 1.0f);
            LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.MATCH_PARENT,
                    0,
                    cardWeight
            );


            cardView.setLayoutParams(param);
            mLinearLayout.addView(cardView);
        }
    }

Android：在运行时为子项分配相等的高度

2 个答案: