Question

我对EditText中的ListActivity字段存在问题。

代码完全符合，但功能很奇怪，输入第一个字段并隐藏键盘，此后文本出现在另一个编辑域中。

帮助解决我的逻辑问题

package com.example.helloandroid;

import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.TextView;

public class AddComp extends ListActivity {


static final int DATE_DIALOG_ID = 0;

        private class EfficientAdapter extends BaseAdapter {
            private LayoutInflater mInflater;
            private String[] attitude_names;
            private String[] attitude_values;

            public EfficientAdapter(Context context) {
                mInflater = LayoutInflater.from(context);
                attitude_names = context.getResources().getStringArray(R.array.COMP_ATTITUDE_NAME);
                attitude_values = new String[attitude_names.length];
            }

            public Object getItem(int position) {
                return position;
            }

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

            public View getView(int position, View convertView, ViewGroup parent) {
                ViewHolder holder;

                if (convertView == null) {
                    convertView = mInflater.inflate(R.layout.addcomp_attitude_row, null);

                    holder = new ViewHolder();
                    holder.Attitude_Name = (TextView) convertView.findViewById(R.id.addcomp_att_name);
                    holder.Attitude_Value = (EditText) convertView.findViewById(R.id.addcomp_att_value);

                    convertView.setTag(holder);
                } else {
                    holder = (ViewHolder) convertView.getTag();
                }

                holder.Attitude_Name.setText(attitude_names[position]);
                holder.Attitude_Value.setHint(attitude_names[position]);
                attitude_values[position] = holder.Attitude_Value.getText().toString();



                return convertView;
            }

            class ViewHolder {
                TextView Attitude_Name;
                EditText Attitude_Value; 
            }

            @Override
            public int getCount() {
                return attitude_names.length;
            }
        }


    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setListAdapter(new EfficientAdapter(this));

        setContentView(R.layout.addcomp);
    }
}

Answer 1

通过在清单中添加条目和使用TextWatcher来解决问题（这是必需的，因为一个列表行的视图被内部调用了几次，这意味着对于500个列表条目，程序只使用了少数几个row.view-class要高效）因此，需要使用文本观察器将更改的数据保存在额外的数据结构中，以便例如数组。

        private class EfficientAdapter extends BaseAdapter {
            private LayoutInflater mInflater;
            private String[] attitude_names;
            public String[] attitude_values;
            private String name;

            public EfficientAdapter(Context context) {
                mInflater = LayoutInflater.from(context);
                attitude_names = context.getResources().getStringArray(R.array.COMP_ATTITUDE_NAME);
                attitude_values = new String[attitude_names.length];
            }

            public Object getItem(int position) {
                return position;
            }

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

            public View getView(int position, View convertView, ViewGroup parent) {
                final ViewHolder holder;

                if (convertView == null) {
                    convertView = mInflater.inflate(R.layout.addcomp_attitude_row, null);

                    holder = new ViewHolder();
                    holder.Attitude_Name = (TextView) convertView.findViewById(R.id.addcomp_att_name);
                    holder.Attitude_Value = (EditText) convertView.findViewById(R.id.addcomp_att_value);
                    holder.Attitude_Value.addTextChangedListener(new TextWatcher()
                        {
                            public void afterTextChanged(Editable edt) 
                            {
                                attitude_values[holder.ref] = edt.toString();
                            }

                            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}

                            public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
                                //attitude_values[ref] = Attitude_Value.getText().toString();
                            }
                        });

                    convertView.setTag(holder);
                } else {
                    holder = (ViewHolder) convertView.getTag();
                }


                holder.ref=position;
                holder.Attitude_Name.setText(attitude_names[position]);
                holder.Attitude_Value.setHint(attitude_names[position]);
                holder.Attitude_Value.setText(attitude_values[position]);




                return convertView;
            }

            class ViewHolder {
                TextView Attitude_Name;
                EditText Attitude_Value; 
                int ref;



            }

            @Override
            public int getCount() {
                return attitude_names.length;
            }
        }

Answer 2

这会对你有所帮助

``

private class EfficientAdapter extends BaseAdapter {
            private LayoutInflater mInflater;
            private String[] attitude_names;
            public String[] attitude_values;
            private String name;
    public static HashMap<Integer,String> myList=new HashMap<Integer,String>();

            public EfficientAdapter(Context context) {
                mInflater = LayoutInflater.from(context);
                attitude_names = context.getResources().getStringArray(R.array.COMP_ATTITUDE_NAME);
                attitude_values = new String[attitude_names.length];
            }
    // initialize myList
    for(int i=0;i<attitude_names.length;i++)
    {
       myList.put(i,"");
    }


            public Object getItem(int position) {
                return position;
            }

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

            public View getView(int position, View convertView, ViewGroup parent) {
                final ViewHolder holder;

                if (convertView == null) {
                    convertView = mInflater.inflate(R.layout.addcomp_attitude_row, null);

                    holder = new ViewHolder();
                    holder.Attitude_Name = (TextView) convertView.findViewById(R.id.addcomp_att_name);
                    holder.Attitude_Value = (EditText) convertView.findViewById(R.id.addcomp_att_value);
                    holder.Attitude_Value.addTextChangedListener(new TextWatcher()
                        {
                            public void afterTextChanged(Editable edt) 
                            {
                                 myList.put(pos,s.toString.trim());
                                attitude_values[holder.ref] = edt.toString();
                            }

                            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}

                            public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
                                //attitude_values[ref] = Attitude_Value.getText().toString();
                            }
                        });

                    convertView.setTag(holder);
                } else {
                    holder = (ViewHolder) convertView.getTag();
                }


                holder.ref=position;
                holder.Attitude_Name.setText(attitude_names[position]);
                holder.Attitude_Value.setHint(attitude_names[position]);
                holder.Attitude_Value.setText(myList.get(position));




                return convertView;
            }

            class ViewHolder {
                TextView Attitude_Name;
                EditText Attitude_Value; 
                int ref;



            }

            @Override
            public int getCount() {
                return attitude_names.length;
            }
        }

这里我已经包含了一个HashMap对象，它将继续关注EditText包含的值。当你滚动listview时，它将通过调用它的getView方法再次呈现。

在这段代码中，当你第一次加载listview时，你所有的edittext都没有text.once你输入一些文本，它会在myList中注明。所以当你再次渲染列表时，你的文本就会被阻止。< / p>

Answer 3

我找到了奇怪聚焦行为的原因必须将android:windowSoftInputMode="adjustPan"作为值添加到Projects Manifest中的活动但另一方面，通常不止一个edidfield值发生变化的问题现在还没有解决

列表中的EditText不按预期方式工作

3 个答案: