java如何从字符串中获取字符串。单击时适配器类中的xml方法
当我在on click if(postion==1)
中实现下面的代码时,我想在on click方法我的应用程序崩溃中的视图持有者上的适配器类中获取字符串
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder>{
private Context context;
String SongURL;
private String[] data;
public Adapter(String[] data){
this.data = data;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.activity_list_item,parent,false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, final int position) {
String title = data[position];
holder.text.setText(title);
}
@Override
public int getItemCount() {
return data.length;
}
public class ViewHolder extends RecyclerView.ViewHolder{
ImageView img;
TextView text;
public ViewHolder(final View itemView) {
super(itemView);
img = (ImageView) itemView.findViewById(R.id.image1);
text = (TextView) itemView.findViewById(R.id.text1);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int postion =getAdapterPosition();
if (postion==0){
String url = "http://sound41.songsbling.link/2016/english-songs/loud-rihanna/12%20-%20Love%20The%20Way%20You%20Lie%20Part%20I%20Bonus%20From%20Us%20%20-%20Loud%20-%20[SongsPK.city].mp3";
Intent intent = new Intent(v.getContext(),player.class);
intent.putExtra("url",url);
v.getContext().startActivity(intent);
}
if (postion==1){
// *This code crashes the app*
String url=Resources.getSystem().getString(R.string.song);
Intent intent = new Intent(v.getContext(),player.class);
intent.putExtra("url",url);
v.getContext().startActivity(intent);
}
}
});
}
}
}
# 1 楼答案
如果您查看docs,您将看到
Resources.getSystem().getStrings
将为您提供系统范围的字符串,而不是应用程序(strings.xml
)中的字符串替换以下行
以下是我的看法
# 2 楼答案
您还可以在Kotlin的apply方法中使用
TextView
的上下文Kotlin: