我正在創建一個應用程式來簡單地存盤牽引力的記錄并能夠查看記錄。
在 ItamListActivity 中，我想查看我的牽引力記錄。
我想在回收視圖中列出所有資料項。
當我單擊 activity_home xml 中的“查看”按鈕時，應用程式崩潰。
專案的 GitHub 鏈接在這里
代碼是
配接器
public class DataAdapter extends RecyclerView.Adapter<DataAdapter.viewHolder>{
ArrayList<DataModel> list;
Context context;
public DataAdapter(ArrayList<DataModel> list, Context context) {
this.list = list;
this.context = context;
}
@NonNull
@Override
public viewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view =
LayoutInflater.from(context).inflate(R.layout.data_list_design,parent,false);
return new viewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull viewHolder holder, int position) {
DataModel model = list.get(position);
holder.sn.setText(model.getSn());
holder.date.setText(model.getDate());
holder.name.setText(model.getName());
holder.weight.setText(model.getWeight());
holder.rate.setText(model.getRate());
holder.total.setText(model.getTotal());
}
@Override
public int getItemCount() {
return list.size();
}
public class viewHolder extends RecyclerView.ViewHolder {
TextView sn,date,name,weight,rate,total;
public viewHolder(@NonNull View itemView) {
super(itemView);
sn = itemView.findViewById(R.id.snTitle);
date = itemView.findViewById(R.id.dateTitle);
name = itemView.findViewById(R.id.nameTitle);
weight = itemView.findViewById(R.id.weightTitle);
rate = itemView.findViewById(R.id.rateTitle);
total = itemView.findViewById(R.id.totalTitle);
}
}
}
家庭活動
binding.listview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(HomeActivity.this,ItemListActivity.class );
startActivity(intent);
}
});
專案串列活動
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityItemListBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
ArrayList<DataModel> list = new ArrayList<>();
list.add(new DataModel(1,"2021-07-29","Potato", 76,50,100));
list.add(new DataModel(2,"2021-07-30","Potato", 106,60,100));
list.add(new DataModel(3,"2021-08-02","Potato", 83,80,100));
list.add(new DataModel(4,"2021-08-03","Potato", 67,90,100));
list.add(new DataModel(5,"2021-08-05","Potato", 70,70,100));
DataAdapter adapter = new DataAdapter(list,this);
LinearLayoutManager linearLayoutManager = new
LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
binding.datalistRv.setLayoutManager(linearLayoutManager);
binding.datalistRv.setNestedScrollingEnabled(false);
binding.datalistRv.setAdapter(adapter);
}
uj5u.com熱心網友回復：
解決方案是
@Override
public void onBindViewHolder(@NonNull viewHolder holder, int position) {
DataModel model = list.get(position);
holder.sn.setText(model.getSn().toString());
holder.date.setText(model.getDate());
holder.name.setText(model.getName());
holder.weight.setText(model.getWeight().toString());
holder.rate.setText(model.getRate().toString());
holder.total.setText(model.getTotal().toString());
}
暗戀的原因是 model.getSn()、model.getWeight()、model.getRate()、model.getTotal() 回傳 Integer 和 textView.setText() 呼叫public final void setText(@StringRes int resid)，它們試圖通過您從模型提供的整數來查找字串。
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