我正在使用一個(gè)RecyclerView, 和一個(gè)CardView, 其中包括多個(gè)TextViews。每張卡片都需要顯示不同數(shù)量的TextViews，因此有些卡片會(huì)是空的，如果是空的，它只會(huì)在卡片上顯示一個(gè)空白區(qū)域。這一切都在 的適配器中執(zhí)行RecyclerView。例如：Card 1: (id 1)3 TextViews showingCard 2: (id 2)10 TextViews showingCard 3: (id 3)7 TextViews showing我目前使用 if else 語(yǔ)句來(lái)確定它是哪一組文本，然后它分配文本視圖、設(shè)置文本或隱藏視圖。我試圖創(chuàng)建一個(gè)簡(jiǎn)單的循環(huán)來(lái)循環(huán)遍歷所有文本視圖并在它們?yōu)榭諘r(shí)隱藏它們。但是，我嘗試的方式不起作用，因?yàn)樗褂米址鳛門(mén)extView.適配器類(lèi)： .Adapter<SettingsAdapter .DataObjectHolder> { private ArrayList<DataObject> mDataset; Context context; public static class DataObjectHolder extends RecyclerView.ViewHolder { public DataObjectHolder(View itemView) { super(itemView); setting1 = (TextView) itemView.findViewById(R.id.textView); setting2 = (TextView) itemView.findViewById(R.id.textView2); //... assigning all the textviews } } public SettingsAdapter(ArrayList<DataObject> myDataset, Context context) { mDataset = myDataset; this.context = context; } @Override public DataObjectHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()) .inflate(R.layout.settings_card_view, parent, false); DataObjectHolder dataObjectHolder = new DataObjectHolder(view); return dataObjectHolder; }
2 回答
楊__羊羊
TA貢獻(xiàn)1943條經(jīng)驗(yàn) 獲得超7個(gè)贊
我認(rèn)為你可以在你的 DataObject 類(lèi)中做一個(gè)在列表或數(shù)組中返回所有消息的方法。
// Somewhere in your DataObject class, it's important to add all the messages, even if they are empty
public String[] getAllMessages(){
return new String[]{messages1, messages2, messages3};
}
然后你可以創(chuàng)建一個(gè) TextView 列表來(lái)循環(huán)它，比如：
private ArrayList<DataObject> mDataset;
Context context;
//Here your list
private List<TextView> tvList = new ArrayList();
public static class DataObjectHolder extends RecyclerView.ViewHolder {
public DataObjectHolder(View itemView) {
super(itemView);
setting1 = (TextView) itemView.findViewById(R.id.textView);
setting2 = (TextView) itemView.findViewById(R.id.textView2);
// Then you add all your TextViews to your list
tvList.add(setting1);
tvList.add(setting2);
}
}
然后在你的onBindViewHolder方法中你可以循環(huán)你的列表：
@Override
public void onBindViewHolder(DataObjectHolder holder, int position) {
String[] messages = mDataset.get(position).getAllMessages(); // The method that we just code
for(int i = 0; i < tvList.size(); i++){
if(messages[i].isEmpty()){
tvList.get(i).setVisibility(View.GONE);
}else{
tvList.get(i).setVisibility(View.VISIBLE);
tvList.get(i).setText(messages[i]);
}
}
}
墨色風(fēng)雨
TA貢獻(xiàn)1853條經(jīng)驗(yàn) 獲得超6個(gè)贊
就我個(gè)人而言，我會(huì)從您的 textViews 創(chuàng)建一個(gè)數(shù)組，并循環(huán)遍歷所有這些數(shù)組。如果他們的文本長(zhǎng)度 == 0 隱藏文本視圖，否則顯示。
如果public void onBindViewHolder()
@Override
public void onBindViewHolder(DataObjectHolder holder, int position) {
for(TextView textView : textViews) {
textView.setText("");
textView.setVisibility(View.GONE);
}
int id= mDataset.get(position).getmIndex();
if (id == 1) {
holder.setting1.setText(mDataset.get(position).getmText1());
} else if (id == 2) {
holder.setting1.setText(mDataset.get(position).getmText1());
holder.setting2.setText(mDataset.get(position).getmText2());
holder.setting3.setText(mDataset.get(position).getmText3());
holder.setting4.setText(mDataset.get(position).getmText4());
holder.setting5.setText(mDataset.get(position).getmText5());
holder.setting6.setText(mDataset.get(position).getmText6());
holder.setting7.setText(mDataset.get(position).getmText7());
holder.setting8.setText(mDataset.get(position).getmText8());
holder.setting9.setText(mDataset.get(position).getmText9());
holder.setting10.setText(mDataset.get(position).getmText10());
} else if (id == 3) {
holder.setting1.setText(mDataset.get(position).getmText1());
holder.setting2.setText(mDataset.get(position).getmText2());
holder.setting3.setText(mDataset.get(position).getmText3());
holder.setting4.setText(mDataset.get(position).getmText4());
holder.setting5.setText(mDataset.get(position).getmText5());
holder.setting6.setText(mDataset.get(position).getmText6());
holder.setting7.setText(mDataset.get(position).getmText7());
}
for(TextView textView : textViews) {
if (textView.getText().length > 0) {
textView.setVisibility(View.VISIBLE);
}
}
}
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