安卓：从意向查看回收站到活动 [英] Android:Intent from Recycler View to Activity
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问题描述
我有了，我想从意向的每一项具体活动的许多项的回收视图。我试过很多方法，但都失败意图的活动。
这是适配器：
公共类ItemsAdapter扩展RecyclerView.Adapter＆LT; ItemsAdapter.ViewHolder＆GT; {
私人的ArrayList＆LT;串GT; itemsData;公共ItemsAdapter（ArrayList的＆LT;串GT; itemsData）{
this.itemsData = itemsData;
}
@覆盖
公共ItemsAdapter.ViewHolder onCreateViewHolder（最终母公司的ViewGroup，
INT viewType）{
查看itemLayoutView = LayoutInflater.from（parent.getContext（））
.inflate（R.layout.item，NULL）; 最后ViewHolder viewHolder =新ViewHolder（itemLayoutView）;
itemLayoutView.setOnClickListener（新View.OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
串词= viewHolder.txtViewTitle.getText（）的toString（）。
Toast.makeText（parent.getContext（），字Toast.LENGTH_LONG）.show（）;
}
}）;
返回viewHolder;
}
@覆盖
公共无效onBindViewHolder（ViewHolder viewHolder，INT位置）{ viewHolder.txtViewTitle.setText（itemsData.get（位置））;
viewHolder.imgViewIcon.setImageResource（R.drawable.imsge_profile）;}
公共静态类ViewHolder扩展RecyclerView.ViewHolder { 公众的TextView txtViewTitle;
公共ImageView的imgViewIcon; 公共ViewHolder（查看itemLayoutView）{
超（itemLayoutView）;
txtViewTitle =（TextView中）itemLayoutView.findViewById（R.id.item_title）;
imgViewIcon =（ImageView的）itemLayoutView.findViewById（R.id.item_icon）;
}
}
@覆盖
公众诠释getItemCount（）{
返回itemsData.size（）;
}
}
这是 main_activity ：
公共类MainActivity扩展ActionBarActivity {
工具栏TBAR;@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）;
TBAR =（工具栏）findViewById（R.id.app_bar）;
setSupportActionBar（TBAR）;
getSupportActionBar（）的setTitle（的Adroid code回收站视图）。
RecyclerView recyclerView =（RecyclerView）findViewById（R.id.recyclerView）;
ArrayList的＆LT;串GT;时listItems =新的ArrayList＆LT;串GT;（）;
listItems.add（汤姆）;
listItems.add（Hamdy）;
listItems.add（约翰）;
listItems.add（Hasna）;
listItems.add（法迪）;
listItems.add（萨默尔）;
recyclerView.setLayoutManager（新LinearLayoutManager（本））;
ItemsAdapter mAdapter =新ItemsAdapter（listItems中）;
recyclerView.setAdapter（mAdapter）;
recyclerView.setItemAnimator（新DefaultItemAnimator（））;
}
}
我试过这个，而不是烤面包，但dosent工作
@覆盖
公共无效的onClick（视图v）{ 最终意图意图;
开关（getPostion（））{
情况下0：
意图=新意图（背景下，FirstActivity.class）;
打破; 情况1：
意图=新意图（背景下，SecondActivity.class）;
打破;
...
默认：
意图=新意图（背景下，DefaultActivity.class）;
打破;
}
context.startActivity（意向）;
}
新的适配器
公共类RVAdapter扩展RecyclerView.Adapter＆LT; RVAdapter.PersonViewHolder＆GT; {公共静态类PersonViewHolder扩展RecyclerView.ViewHolder { CardView简历;
TextView的PERSONNAME;
TextView的人士;
ImageView的personPhoto; 公共PersonViewHolder（查看ItemView控件）{
超（ItemView控件）;
CV =（CardView）itemView.findViewById（R.id.cv）;
PERSONNAME =（TextView中）itemView.findViewById（R.id.person_name）;
人物=（TextView中）itemView.findViewById（R.id.person_age）;
personPhoto =（ImageView的）itemView.findViewById（R.id.person_photo）; recyclerview.addOnItemTouchListener（新RecyclerItemClickListener（
情况下，新RecyclerItemClickListener.OnItemClickListener（）{ @覆盖
公共无效onItemClick（查看视图，INT位置）{
// TODO自动生成方法存根
最终意图意图;
开关（位置）{
情况下0：
意图=新意图（背景下，secoundActivity.class）;
打破;
}
} ））;
}}
}清单＆LT;＆人GT;者;RVAdapter（列表＆LT;＆人GT;人）{ this.persons =者;
}@覆盖
公共无效onAttachedToRecyclerView（RecyclerView recyclerView）{
super.onAttachedToRecyclerView（recyclerView）;
}@覆盖
公共PersonViewHolder onCreateViewHolder（ViewGroup中ViewGroup中，int i）以{
视图V = LayoutInflater.from（viewGroup.getContext（））膨胀（R.layout.item，ViewGroup中，假的）。
PersonViewHolder PVH =新PersonViewHolder（V）;
返回PVH;
}@覆盖
公共无效onBindViewHolder（PersonViewHolder personViewHolder，int i）以{
personViewHolder.personName.setText（persons.get（I）。名称）;
personViewHolder.personAge.setText（persons.get（我）。年龄）;
personViewHolder.personPhoto.setImageResource（persons.get㈠.photoId）;
}@覆盖
公众诠释getItemCount（）{ 返回persons.size（）;
}
}
解决方案
您不能直接使用的onclick。我已经找到了解决方案，它为我工作。尝试一下。我希望它会帮助你。
第1步：此拳类RecyclerItemClickListener添加到您的包
。
\r
\r\r
\r公共类RecyclerItemClickListener工具\r
RecyclerView.OnItemTouchListener {\r
私人OnItemClickListener mListener;\r
\r
公共接口OnItemClickListener {\r
公共无效onItemClick（查看视图，诠释位）;\r
}\r
\r
GestureDetector mGestureDetector;\r
\r
公共RecyclerItemClickListener（上下文的背景下，\r
OnItemClickListener监听）{\r
mListener =侦听器;\r
mGestureDetector =新GestureDetector（背景下，\r
新GestureDetector.SimpleOnGestureListener（）{\r
@覆盖\r
公共布尔onSingleTapUp（MotionEvent五）{\r
返回true;\r
}\r
}）;\r
}\r
\r
@覆盖\r
公共布尔onInterceptTouchEvent（RecyclerView观点，MotionEvent五）{\r
视图childView = view.findChildViewUnder（e.getX（），e.getY（））;\r
如果（childView = NULL＆放大器;！＆安培;！mListener = NULL\r
＆功放;＆安培; mGestureDetector.onTouchEvent（E））{\r
mListener.onItemClick（childView，\r
view.getChildPosition（childView））;\r
}\r
返回false;\r
}\r
\r
@覆盖\r
公共无效onTouchEvent（RecyclerView观点，MotionEvent motionEvent）{\r
}\r
} \r
第二步：现在使用的onclick方法。这给你项目的位置点击。一旦你的位置比你可以使用它按您的要求。
\r
\r\r
\r recyclerview.addOnItemTouchListener（新RecyclerItemClickListener（\r
情况下，新RecyclerItemClickListener.OnItemClickListener（）{\r
\r
@覆盖\r
公共无效onItemClick（查看视图，INT位置）{\r
// TODO自动生成方法存根\r
\r
Toast.makeText（MainActivity.this，位置+，\r
Toast.LENGTH_SHORT）.show（）;\r
\r
最终意图意图;\r
开关（位置）{\r
情况下0：\r
Toast.makeText（上下文，案例0，\r
Toast.LENGTH_SHORT）.show（）;\r
意图=新意图（背景下，FirstActivity.class）;\r
突破;\r
\r
\t\t情况1：\r
Toast.makeText（背景下，案例1\r
Toast.LENGTH_SHORT）.show（）;\r
意图=新意图（背景下，SecondActivity.class）;\r
突破;\r
\r
默认情况下：\r
意图=新意图（背景下，DefaultActivity.class）;\r
突破;\r
\r
}\r
}））; \r
I have a recycler view that has many items that I want to intent from every item to specific activities. I tried many ways but all fail to intent to the activities.
This is the adapter:
public class ItemsAdapter extends RecyclerView.Adapter<ItemsAdapter.ViewHolder> {
private ArrayList<String> itemsData;
public ItemsAdapter(ArrayList<String> itemsData) {
this.itemsData = itemsData;
}
@Override
public ItemsAdapter.ViewHolder onCreateViewHolder(final ViewGroup parent,
int viewType) {
View itemLayoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item, null);
final ViewHolder viewHolder = new ViewHolder(itemLayoutView);
itemLayoutView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String word = viewHolder.txtViewTitle.getText().toString();
Toast.makeText(parent.getContext(),word,Toast.LENGTH_LONG).show();
}
});
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
viewHolder.txtViewTitle.setText(itemsData.get(position));
viewHolder.imgViewIcon.setImageResource(R.drawable.imsge_profile);
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView txtViewTitle;
public ImageView imgViewIcon;
public ViewHolder(View itemLayoutView) {
super(itemLayoutView);
txtViewTitle = (TextView) itemLayoutView.findViewById(R.id.item_title);
imgViewIcon = (ImageView) itemLayoutView.findViewById(R.id.item_icon);
}
}
@Override
public int getItemCount() {
return itemsData.size();
}
}
This is main_activity:
public class MainActivity extends ActionBarActivity {
Toolbar tBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tBar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(tBar);
getSupportActionBar().setTitle("AdroidCode Recycler View");
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
ArrayList<String> listItems = new ArrayList<String>();
listItems.add("Tom");
listItems.add("Hamdy");
listItems.add("John");
listItems.add("Hasna");
listItems.add("Fadi");
listItems.add("Samer");
recyclerView.setLayoutManager(new LinearLayoutManager(this));
ItemsAdapter mAdapter = new ItemsAdapter(listItems);
recyclerView.setAdapter(mAdapter);
recyclerView.setItemAnimator(new DefaultItemAnimator());
}
}
i tried this instead of the Toast but dosent work
@Override
public void onClick(View v) {
final Intent intent;
switch (getPostion()){
case 0:
intent = new Intent(context, FirstActivity.class);
break;
case 1:
intent = new Intent(context, SecondActivity.class);
break;
...
default:
intent = new Intent(context, DefaultActivity.class);
break;
}
context.startActivity(intent);
}
new adapter
public class RVAdapter extends RecyclerView.Adapter<RVAdapter.PersonViewHolder> {
public static class PersonViewHolder extends RecyclerView.ViewHolder {
CardView cv;
TextView personName;
TextView personAge;
ImageView personPhoto;
public PersonViewHolder(View itemView) {
super(itemView);
cv = (CardView)itemView.findViewById(R.id.cv);
personName = (TextView)itemView.findViewById(R.id.person_name);
personAge = (TextView)itemView.findViewById(R.id.person_age);
personPhoto = (ImageView)itemView.findViewById(R.id.person_photo);
recyclerview.addOnItemTouchListener(new RecyclerItemClickListener(
context, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
// TODO Auto-generated method stub
final Intent intent;
switch (position) {
case 0:
intent = new Intent(context, secoundActivity.class);
break;
}
}
));
}}
}
List<Person> persons;
RVAdapter(List<Person> persons){
this.persons = persons;
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item, viewGroup, false);
PersonViewHolder pvh = new PersonViewHolder(v);
return pvh;
}
@Override
public void onBindViewHolder(PersonViewHolder personViewHolder, int i) {
personViewHolder.personName.setText(persons.get(i).name);
personViewHolder.personAge.setText(persons.get(i).age);
personViewHolder.personPhoto.setImageResource(persons.get(i).photoId);
}
@Override
public int getItemCount() {
return persons.size();
}
}
解决方案
You can not direct use onclick. I have found a solution and it's works for me. Try it. I hope it will helps you.
Step 1: Fist add this RecyclerItemClickListener class to your package.
public class RecyclerItemClickListener implements
RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context,
OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context,
new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
});
}
@Override
public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
View childView = view.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null
&& mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView,
view.getChildPosition(childView));
}
return false;
}
@Override
public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) {
}
}
Step 2: Now use onclick method. this gives you position of item clicked. Once you get position than you can use it as per your requirement.
recyclerview.addOnItemTouchListener(new RecyclerItemClickListener(
context, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, position + "",
Toast.LENGTH_SHORT).show();
final Intent intent;
switch (position) {
case 0:
Toast.makeText(context, "case 0",
Toast.LENGTH_SHORT).show();
intent = new Intent(context,FirstActivity.class);
break;
case 1:
Toast.makeText(context, "case 1",
Toast.LENGTH_SHORT).show();
intent = new Intent(context,SecondActivity.class);
break;
default:
intent = new Intent(context,DefaultActivity.class);
break;
}
}));
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