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android - Adapter中如何将startActivity添加到OnClickListener中?

转载 作者:行者123 更新时间:2023-11-29 17:39:18 25 4
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这是我的适配器。

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

private static final int TYPE_HEADER = 0; // Declaring Variable to Understand which View is being worked on
// IF the viaew under inflation and population is header or Item
private static final int TYPE_ITEM = 1;

private String mNavTitles[]; // String Array to store the passed titles Value from MainActivity.java
private int mIcons[]; // Int Array to store the passed icons resource value from MainActivity.java

private String name; //String Resource for header View Name
private int profile; //int Resource for header view profile picture
private String email; //String Resource for header view email
static Context context;


// Creating a ViewHolder which extends the RecyclerView View Holder
// ViewHolder are used to to store the inflated views in order to recycle them

public static class ViewHolder extends RecyclerView.ViewHolder {
int Holderid;

TextView textView;
ImageView imageView;
ImageView profile;
TextView Name;
TextView email;
Context contxt;
Intent intent;


public ViewHolder(View itemView,int ViewType,Context c) { // Creating ViewHolder Constructor with View and viewType As a parameter
super(itemView);
contxt = c;
itemView.setClickable(true);
itemView.setOnClickListener(Click);

// Here we set the appropriate view in accordance with the the view type as passed when the holder object is created

if(ViewType == TYPE_ITEM) {
textView = (TextView) itemView.findViewById(R.id.rowText); // Creating TextView object with the id of textView from item_row.xml
imageView = (ImageView) itemView.findViewById(R.id.rowIcon);// Creating ImageView object with the id of ImageView from item_row.xml
Holderid = 1; // setting holder id as 1 as the object being populated are of type item row
}
else{


Name = (TextView) itemView.findViewById(R.id.name); // Creating Text View object from header.xml for name
email = (TextView) itemView.findViewById(R.id.email); // Creating Text View object from header.xml for email
profile = (ImageView) itemView.findViewById(R.id.circleView);// Creating Image view object from header.xml for profile pic
Holderid = 0; // Setting holder id = 0 as the object being populated are of type header view
}
}



private View.OnClickListener Click=new View.OnClickListener(){
@Override
public void onClick(View v) {
switch(getPosition())
{
case 1:
intent = new Intent(context, Me.class);
startActivity(intent);
}
}

};
}



MyAdapter(String Titles[],int Icons[],String Name,String Email, int Profile,Context passedContext){ // MyAdapter Constructor with titles and icons parameter
// titles, icons, name, email, profile pic are passed from the main activity as we
mNavTitles = Titles; //have seen earlier
mIcons = Icons;
name = Name;
email = Email;
profile = Profile; //here we assign those passed values to the values we declared here
this.context = passedContext;

//in adapter



}



//Below first we ovverride the method onCreateViewHolder which is called when the ViewHolder is
//Created, In this method we inflate the item_row.xml layout if the viewType is Type_ITEM or else we inflate header.xml
// if the viewType is TYPE_HEADER
// and pass it to the view holder

@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

if (viewType == TYPE_ITEM) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_row,parent,false); //Inflating the layout

ViewHolder vhItem = new ViewHolder(v,viewType,context); //Creating ViewHolder and passing the object of type view

return vhItem; // Returning the created object

//inflate your layout and pass it to view holder

} else if (viewType == TYPE_HEADER) {

View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.header,parent,false); //Inflating the layout

ViewHolder vhHeader = new ViewHolder(v,viewType,context); //Creating ViewHolder and passing the object of type view

return vhHeader; //returning the object created


}
return null;

}

//Next we override a method which is called when the item in a row is needed to be displayed, here the int position
// Tells us item at which position is being constructed to be displayed and the holder id of the holder object tell us
// which view type is being created 1 for item row
@Override
public void onBindViewHolder(MyAdapter.ViewHolder holder, int position) {
if(holder.Holderid ==1) { // as the list view is going to be called after the header view so we decrement the
// position by 1 and pass it to the holder while setting the text and image
holder.textView.setText(mNavTitles[position - 1]); // Setting the Text with the array of our Titles
holder.imageView.setImageResource(mIcons[position -1]);// Settimg the image with array of our icons
}
else{

holder.profile.setImageResource(profile); // Similarly we set the resources for header view
holder.Name.setText(name);
holder.email.setText(email);
}
}

// This method returns the number of items present in the list
@Override
public int getItemCount() {
return mNavTitles.length+1; // the number of items in the list will be +1 the titles including the header view.
}


// Witht the following method we check what type of view is being passed
@Override
public int getItemViewType(int position) {
if (isPositionHeader(position))
return TYPE_HEADER;

return TYPE_ITEM;
}

private boolean isPositionHeader(int position) {
return position == 0;
}

这是里面的OnClickListener

    private View.OnClickListener Click=new View.OnClickListener(){
@Override
public void onClick(View v) {
switch(getPosition())
{
case 1:
intent = new Intent(context, Me.class);
startActivity(intent); // ERROR!
}
}

};
}

我正在尝试将 startActivity 放入其中,但出现错误。
我该如何处理?

最佳答案

像下面这样尝试。

private View.OnClickListener Click=new View.OnClickListener(){
@Override
public void onClick(View v) {
switch(getPosition())
{
case 1:
intent = new Intent(context, Me.class);
context.startActivity(intent); // or
v.getContext().startActivity(intent);
}
}

};

关于android - Adapter中如何将startActivity添加到OnClickListener中?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29319164/

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