代码编写UI

• 使用代码编写UI
• 这里演示的是使用androidx中的RecyclerView

    function main() {

        importPackage(androidx.recyclerview.widget);
        importPackage(android.widget)

        let recyclerView = new RecyclerView(context);
        logd(recyclerView)
        // //设置布局管理器
        layoutManager = new LinearLayoutManager(context);
        recyclerView.setLayoutManager(layoutManager);
        var activity = ui.getActivity();
        ui.logd("activity " + activity);
        activity.setContentView(recyclerView);
        ui.logd("activity22 " + activity);

        let giftBoxList = [];
        for (var i = 0; i < 10; i++) {
                giftBoxList.push(new GiftBox(i + "个", i * 2 + "斤", i * 3 + "袋"));
        }
        ui.logd("giftBoxList " + giftBoxList);
        let recycleAdapter = createGiftBoxAdapter(giftBoxList);
        ui.logd("recycleAdapter " + recycleAdapter);
        recyclerView.setAdapter(recycleAdapter);

}

function createGiftBoxAdapter(giftBoxList) {
        return RecyclerView.Adapter({
                onCreateViewHolder: function(parent, viewType) {
                        // 视图创建
                        let view;
                        let holder;
                        //直接生成 或者 从xml解析出来
                        view = new TextView(context);
                        holder = JavaAdapter(RecyclerView.ViewHolder, {},
                        view);

                        return holder;
                },
                onBindViewHolder: function(holder, position) {
                        // 数据绑定
                        giftBox = giftBoxList[position];
                        holder.itemView.setText(giftBox.getLollipops());
                        ui.logd("giftBox " + giftBox)

                },
                getItemCount: function() {
                        return giftBoxList.length;
                }

        });
}

function GiftBox(lollipops, melonSeeds, peanut) {
        this.lollipops = lollipops;
        this.melonSeeds = melonSeeds;
        this.peanut = peanut;
}
GiftBox.prototype.getLollipops = function() {
        return this.lollipops;
};
GiftBox.prototype.getMelonSeeds = function() {
        return this.melonSeeds;
};
GiftBox.prototype.getPeanut = function() {
        return this.peanut;
};
GiftBox.prototype.getGiftType = function() {
        return random(0, 1);
};

main();