Question

我正在尝试找出一种更聪明的方法来在我的onBindViewHolder中创建动态意图。

public void onBindViewHolder(@NonNull ViewHolder viewHolder, final int position) {
        viewHolder.ivIntroList.setImageResource(mIntroListImages.get(position));
        viewHolder.tvIntroList.setText(mIntroListNames.get(position));

        viewHolder.ivIntroList.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                switch (position){
                    case 0:
                        Intent intentHero = new Intent(mContext,heroActivity.class);
                        mContext.startActivity(intentHero);
                        break;
                    case 1:
                        Intent intentItem = new Intent(mContext,itemActivity.class);
                        mContext.startActivity(intentItem);
                        break;
                         .
                         .
                         .
                     case n:
                       break

                }

            }
        });

使用职位来创建自己的意图的更聪明的方法是什么？我知道switch并不是最聪明的解决方案。

重要的是要知道我想使用mIntroListNames，因为我们那里有hero，item，spell ...等，而这些活动都被称为heroActivity，itemActivity，spellActivity ...

这就是为什么我认为应该有一个更明智的解决方案！

Answer 1

尝试引用此示例代码，希望对您有所帮助：通过使用intent.put extra，我们可以使用所需数据动态更新单个活动：

public void onBindViewHolder(backadapter.exViewHolder holder, final int position){
    holder.exname.setText(exList.get(position).name);
    holder.exlogo.setImageResource(exList.get(position).logoId);
    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (position == 0 ){
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.twobarpullups);
                i1.putExtra("text",R.string.crunches);
                context.startActivity(i1);


            }
            if (position == 1) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.highpulleyrowgif);
                i1.putExtra("text",R.string.declinecrunch);
                context.startActivity(i1);


            }
            if (position == 2) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.chinupsgif);
                i1.putExtra("text",R.string.dumsidebend);
                context.startActivity(i1);

            }
            if (position == 3) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.curlbaronearmrow);
                i1.putExtra("text",R.string.hanglegraise);
                context.startActivity(i1);
            }
            if (position == 4) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.hangdumrowgif);
                i1.putExtra("text",R.string.inclineleg);
                context.startActivity(i1);
            }
            if (position == 5) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.ropechingif);
                i1.putExtra("text",R.string.legraise);
                context.startActivity(i1);
            }
            if (position == 6) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.deadliftgif);
                i1.putExtra("text",R.string.flatbenchlyingleg);
                context.startActivity(i1);
            }
            if (position == 7) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.seatedrowsgif);
                i1.putExtra("text",R.string.jackknife);
                context.startActivity(i1);
            }
            if (position == 8) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.barbentoverrowgif);
                i1.putExtra("text",R.string.jackknife);
                context.startActivity(i1);
            }
            if (position == 9) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.bentoverreversegripgif);
                i1.putExtra("text",R.string.twisthip);
                context.startActivity(i1);
            }
            if (position == 10) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.tbarrowsgif);
                i1.putExtra("text",R.string.weightcrunch);
                context.startActivity(i1);
            }
            if (position == 11) {
                Intent i1=new Intent(context,abdetails.class);
                i1.putExtra("img",R.drawable.straigharmpulldowngif);
                i1.putExtra("text",R.string.plank);
                context.startActivity(i1);
            }



        }
    });

}

目标活动的主要类别的代码：

public class abdetails extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_abdetails);
    GifImageView gifImageView;
    gifImageView=findViewById(R.id.gifview);
    Intent i1=getIntent();

    TextView tv;


    tv = findViewById(R.id.exdesc);
    tv.setMovementMethod(new ScrollingMovementMethod());
    gifImageView.setBackgroundResource(i1.getIntExtra("img",0));
    tv.setText(i1.getIntExtra("text",0));

    }

在onBindViewHolder（RecyclerView Adapter）中创建动态意图

1 个答案: