我正在android studio中开发一个应用程序。我的应用程序有一个列表视图，它的行中有 Edittext 、 textview 和复选框。我的问题是当我的 listvew 中有五个以上的项目时，listview 失去焦点，例如：当我按下第 6 个项目的复选框时，textview 会显示第一个项目的名称。我希望我能很好地解释我的问题。
这是我的适配器：
public AdapterListView(Context context, int resource, ArrayList<ObjectPeople> arraypeople) {
super(context, resource);
this.mContext = context;
this.arrayPeople = arraypeople;
this.inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public View getView(final int position, View convertView, ViewGroup parent)
{
final ViewHolder holder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.item_listview, null);
holder = new ViewHolder();
holder.mission_name = (TextView) convertView.findViewById(R.id.mission_name);
holder.mission_time = (TextView) convertView.findViewById(R.id.mission_time);
holder.edit_time = (EditText) convertView.findViewById(R.id.edit_time);
holder.mission_image= (ImageView) convertView.findViewById(R.id.mission_image);
holder.cbm = (CheckBox) convertView.findViewById(R.id.checkbo);
convertView.setTag(holder);
holder.cbm.setOnClickListener(new View.OnClickListener() {
public void onClick(View v ) {
CheckBox cb = (CheckBox) v ;
final ObjectPeople person = arrayPeople.get(position);
if(cb.isChecked()) {
arrayPeople.get(position).checkbox= true;
int mis_tm=0;
try{ mis_tm= Integer.parseInt( holder.edit_time.getText().toString());}
catch (Exception e){
cb.setChecked(false);
Toast.makeText(mContext, "يرجى إدخال قيمة معينة", Toast.LENGTH_SHORT).show();}
person.time= mis_tm;
if(mis_tm>0&&mis_tm<1200){
holder.mission_name.setText("اسم المهمة: "+person.name);
holder.mission_time.setText( "مدة المهمة: "+ person.time );
holder.edit_time.setVisibility(View.GONE);}
else{
cb.setChecked(false);
Toast.makeText(mContext, "يرجى اختيار رقم حقيقي", Toast.LENGTH_SHORT).show();
}
}
else {
arrayPeople.get(position).checkbox= false;
holder.edit_time.setVisibility(View.VISIBLE);
}
}
});
} else {
holder = (ViewHolder) convertView.getTag();
}
final ObjectPeople person = arrayPeople.get(position);
holder.mission_name.setText("اسم المهمة: "+person.name);
holder.mission_time.setText( "مدة المهمة: ");
holder.mission_image.setImageResource(arrayPeople.get(position).image);
holder.edit_time.setId(position);
holder.edit_time.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
try {
if (!hasFocus) {
final int position = v.getId();
final EditText Caption = (EditText) v;
arrayPeople.get(position).time = Integer.parseInt(Caption.getText().toString());
}
}catch (Exception e){}
}
});
holder.cbm.setTag(arrayPeople);
return convertView;
}
@Override
public int getCount() {
return arrayPeople.size();
}
static class ViewHolder {
TextView mission_name;
TextView mission_time;
EditText edit_time;
ImageView mission_image;
CheckBox cbm;
}
}
这个 select.java 包含 arraylist 和列表视图：
public class select extends AppCompatActivity {
ArrayList<ObjectPeople> arrPeople;
ListView lvPeople;
AdapterListView adapter;
ObjectPeople person;
SharedPreferences settings;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_select);
settings = getApplicationContext().getSharedPreferences("shared", 0);
lvPeople= (ListView) findViewById(R.id.lvPeopl);
arrPeople=new ArrayList<>();
person = new ObjectPeople("حفظ قرآن", 0,false, R.drawable.quran_hifz_r);
arrPeople.add(person);
person = new ObjectPeople("تلاوة قرآن", 0 ,false,R.drawable.img);
arrPeople.add(person);
person = new ObjectPeople("قراءة كتاب", 0 , false,R.drawable.books_r);
arrPeople.add(person);
person = new ObjectPeople("دورات تطوير مهارات", 0 , false,R.drawable.courses_r);
arrPeople.add(person);
person = new ObjectPeople("رياضة", 15 , false,R.drawable.sport_r);
arrPeople.add(person);
final String[] misson_name = new String[1];
Button adf= (Button) findViewById(R.id.add_mission_out_btn);
adf.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
View view = LayoutInflater.from(select.this).inflate(R.layout.add_mission_lyt,null);
final EditText add_name = (EditText) view.findViewById(R.id.add_mission_name);
AlertDialog.Builder builder = new AlertDialog.Builder(select.this);
builder.setMessage("add your mission")
.setView(view)
.setPositiveButton("إضافة", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
misson_name[0] = add_name.getText().toString();
arrPeople.add(new ObjectPeople(misson_name[0], 0, true,R.drawable.smile_small_r));
}
})
.setNegativeButton("إلغاء",null)
.setCancelable(false);
AlertDialog alert =builder.create();
alert.show();
}
});
adapter=new AdapterListView(this,R.layout.item_listview,arrPeople);
lvPeople.setAdapter(adapter);
checkButtonClick();
}
private void checkButtonClick() {
Button myButton = (Button) findViewById(R.id.btn_save);
myButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences settings = getApplicationContext().getSharedPreferences("shared", 0);
int hours2=settings.getInt("hours",0)*60;
ArrayList<ObjectPeople> selected_missions = new ArrayList<>();
int missoins_time_calc=0;
for (int i = 0; i <arrPeople.size(); i++) {
if(arrPeople.get(i).checkbox==true){
selected_missions.add(arrPeople.get(i));
missoins_time_calc= missoins_time_calc + arrPeople.get(i).time;}
}
if (hours2 == missoins_time_calc){
Gson gson = new Gson();
String jsonText = gson.toJson(selected_missions);
SharedPreferences.Editor editor = settings.edit();
editor.putString("selected_array", jsonText);
editor.commit();
Intent intent = new Intent(select.this, yourprogram.class);
startActivity(intent);
overridePendingTransition(R.anim.fade_in,R.anim.fade_out);
}
else if (hours2 > missoins_time_calc){
Toast.makeText(select.this, "بقي"+(-missoins_time_calc+ hours2)+" دقيقة ", Toast.LENGTH_SHORT).show();}
else if (hours2< missoins_time_calc){
Toast.makeText(select.this,"يوجد "+ (-hours2+missoins_time_calc)+" دقيقة زيادة على الوقت المخصص", Toast.LENGTH_SHORT).show();
}
/* ArrayList<missions> missionsList = dataAdapter.missionsList;
for(int i = 0; i< missionsList.size(); i++){
missions missions = missionsList.get(i);
if(missions.isSelected()){}}*/
}
});
}
}