亮点列表视图项

更新时间：2023-02-06 14:54:50

删除选择和尝试以下操作：

修改

 公共类UsersAdapter扩展BaseAdapter实现OnClickListener {        LoginActivity背景;
        私人列表＆LT;串GT; listOfUsers;
        布尔[] arrBgcolor;
        私人INT蓝色= Color.BLUE;        公共UsersAdapter（LoginActivity _context，列表与LT;弦乐＆GT; listOfUsers）{
            上下文= _context;
            this.listOfUsers = listOfUsers;            arrBgcolor =新的布尔[listOfUsers.size（）];
            resetArrbg（）;        }        私人无效resetArrbg（）{
            的for（int i = 0; I＆LT; arrBgcolor.length;我++）{
                arrBgcolor [I] = FALSE;
            }
        }        ......        公共查看getView（最终诠释的立场，观点convertView，父母的ViewGroup）{
            字符串项= listOfUsers.get（位置）;
            如果（convertView == NULL）{
                LayoutInflater吹气=（LayoutInflater）context.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
                convertView = inflater.inflate（R.layout.users_row，NULL）;
            }
            TextView的用户名=（的TextView）convertView.findViewById（R.id.tvAllUsersName）;
            UserName.setText（输入）;            的LinearLayout LinLayout =（的LinearLayout）convertView.findViewById（R.id.layoutUsersRow）;
            LinLayout.setFocusableInTouchMode（假）;
            LinLayout.setFocusable（假）;
            LinLayout.setOnClickListener（本）;            //添加以下，位置就是从这里访问
            如果（arrBgcolor [位置]）{
                convertView.setBackgroundColor（蓝色）;
            }
            convertView.setOnClickListener（新OnClickListener（）{
                @覆盖
                公共无效的onClick（视图v）{
                    resetArrbg（）;
                    arrBgcolor [位置] =真;
                    notifyDataSetChanged（）;
                }
            }）;
            返回convertView;
        }

I need to highlight a listview item when i touch it and to stay highlighted. I tried everything I found but nothing worked. Here is my code:

This is the listview:

<ListView
    android:id="@+id/lvUsers"
    android:layout_width="300dp"
    android:layout_height="fill_parent"
    android:layout_alignParentLeft="true"
    android:background="@drawable/border2"
    android:choiceMode="singleChoice"
    android:padding="5dp" >
</ListView>

The @drawable/border2 is just a border around the listview.

This is the listview item layout:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layoutUsersRow"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/list_selector_background"
android:orientation="vertical" >

<TextView
    android:id="@+id/tvAllUsersName"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:text="User name"
    android:textAppearance="?android:attr/textAppearanceLarge" />

This is list_selector_background:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true" android:drawable="@color/blue" /> <!-- focused -->
    <item android:state_focused="true" android:state_pressed="true" android:drawable="@color/blue" /> <!-- focused and pressed-->
    <item android:state_pressed="true" android:drawable="@color/blue" /> <!-- pressed -->
    <item android:drawable="@color/transparent" /> <!-- default -->
</selector>

This is the code from the listview adapter

public class UsersAdapter extends BaseAdapter implements OnClickListener {

LoginActivity context;
private List<String> listOfUsers;

public UsersAdapter(LoginActivity _context, List<String> listOfUsers) {
    context = _context;
    this.listOfUsers = listOfUsers;
}

public int getCount() {
    return listOfUsers.size();
}

public Object getItem(int position) {
    return listOfUsers.get(position);
}

public long getItemId(int position) {
    return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
    String entry = listOfUsers.get(position);
    if (convertView == null) {
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.users_row, null);
    }

    TextView UserName = (TextView) convertView.findViewById(R.id.tvAllUsersName);
    UserName.setText(entry);

    LinearLayout LinLayout = (LinearLayout) convertView.findViewById(R.id.layoutUsersRow);
    LinLayout.setFocusableInTouchMode(false);
    LinLayout.setFocusable(false);
    LinLayout.setOnClickListener(this);

    return convertView;
}

public void onClick(View v) {
    // get the row the clicked button is in
    LinearLayout row = (LinearLayout) v;

    TextView child = (TextView) row.getChildAt(0);
    if (child.getText().toString().equals("Admin")) {
        Intent i = new Intent("com.vorteksed.checkinform.ADMINLOGINACTIVITY");
        i.putExtra("verificationFor", "ADMIN_LOGIN");
        context.startActivity(i);
    } else {
        context.userClicked(child.getText().toString());

        // focus the pin field after selecting user name from the list
        if (context.currentList != null) {
            context.etLoginPin.setVisibility(View.VISIBLE);
            context.tvPin.setVisibility(View.VISIBLE);
            context.etLoginPin.requestFocus();
            context.etLoginPin.setText("");
            InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.showSoftInput(context.etLoginPin, 0);
        }
    }
}
}

This is not working. It only highlights the item while it's pressed. As soon as i release it, the highlight is gone.

HERE IS THE SOLUTION

Remove the android:background="@drawable/list_selector_background" line from the listview item layout. The selector is not needed at all. And here is the adapter's code:

public class UsersAdapter extends BaseAdapter {

LoginActivity context;
private List<String> listOfUsers;
boolean[] arrBgcolor;
private int blue = Color.BLUE;
private int transparent = Color.TRANSPARENT;

public UsersAdapter(LoginActivity _context, List<String> listOfUsers) {
    context = _context;
    this.listOfUsers = listOfUsers;

    arrBgcolor = new boolean[listOfUsers.size()];
    resetArrbg();

}

private void resetArrbg() {
    for (int i = 0; i < arrBgcolor.length; i++) {
        arrBgcolor[i] = false;                  
    }
}

public int getCount() {
    return listOfUsers.size();
}

public Object getItem(int position) {
    return listOfUsers.get(position);
}

public long getItemId(int position) {
    return position;
}

public View getView(final int position, View convertView, ViewGroup parent) {
    String entry = listOfUsers.get(position);
    if (convertView == null) {
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.users_row, null);
    }


    TextView UserName = (TextView) convertView.findViewById(R.id.tvAllUsersName);
    UserName.setText(entry);

    LinearLayout LinLayout = (LinearLayout) convertView.findViewById(R.id.layoutUsersRow);
    LinLayout.setFocusableInTouchMode(false);
    LinLayout.setFocusable(false);
    LinLayout.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            handleClick(v, position);
        }
    });

    if (arrBgcolor[position])
        LinLayout.setBackgroundColor(blue);
    else 
        LinLayout.setBackgroundColor(transparent);

    return convertView;
}

public void handleClick(View v, int position) {
    LinearLayout row = (LinearLayout) v;

    resetArrbg();
    arrBgcolor[position] = true;
    notifyDataSetChanged();

    TextView child = (TextView) row.getChildAt(0);
    if (child.getText().toString().equals("Admin")) {
        Intent i = new Intent("com.vorteksed.checkinform.ADMINLOGINACTIVITY");
        i.putExtra("verificationFor", "ADMIN_LOGIN");
        context.startActivity(i);
    } else {
        context.userClicked(child.getText().toString());

        // focus the pin field after selecting user name from the list
        if (context.currentList != null) {
            context.etLoginPin.setVisibility(View.VISIBLE);
            context.tvPin.setVisibility(View.VISIBLE);
            context.etLoginPin.requestFocus();
            context.etLoginPin.setText("");
            InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.showSoftInput(context.etLoginPin, 0);
        }
    }
}

}

remove the selector and try the following:

EDIT

public class UsersAdapter extends BaseAdapter implements OnClickListener {

        LoginActivity context;
        private List<String> listOfUsers;
        boolean[] arrBgcolor;
        private int blue = Color.BLUE;

        public UsersAdapter(LoginActivity _context, List<String> listOfUsers) {
            context = _context;
            this.listOfUsers = listOfUsers;

            arrBgcolor = new boolean[listOfUsers.size()];
            resetArrbg();

        }

        private void resetArrbg() {
            for (int i = 0; i < arrBgcolor.length; i++) {
                arrBgcolor[i] = false;                  
            }
        }

        ......

        public View getView(final int position, View convertView, ViewGroup parent) {
            String entry = listOfUsers.get(position);
            if (convertView == null) {
                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView = inflater.inflate(R.layout.users_row, null);
            }


            TextView UserName = (TextView) convertView.findViewById(R.id.tvAllUsersName);
            UserName.setText(entry);

            LinearLayout LinLayout = (LinearLayout) convertView.findViewById(R.id.layoutUsersRow);
            LinLayout.setFocusableInTouchMode(false);
            LinLayout.setFocusable(false);
            LinLayout.setOnClickListener(this);

            //add the following, the position is accessible from here
            if (arrBgcolor[position]) {
                convertView.setBackgroundColor(blue);
            }
            convertView.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    resetArrbg();
                    arrBgcolor[position] = true;
                    notifyDataSetChanged();
                }
            }); 
            return convertView;
        }

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亮点列表视图项

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