ArrayAdapter 行颜色方法更改多行
ArrayAdapter row color method changes multiple rows
我正在尝试为自定义列表视图制作 ArrayAdapter。当用户单击 listView 上的 "finish" 时，我希望该特定条目的行颜色变为红色，然后隐藏 "finish" 按钮并显示另一个名为 [=19= 的按钮].到目前为止，这很好用，但它会更改可滚动列表中更下方行的行和按钮配置。
我研究了许多不同的解决方案，并且几乎尝试了我所看到的所有建议。我一定是遗漏了什么...
public class ResultsAdapter extends BaseAdapter {
private static String LOGTAG = "Logtag: " + Thread.currentThread()
.getStackTrace()[2].getClass().getSimpleName(); // log tag for records
Context mContext; // add context
LayoutInflater inflater; // instance of inflater
ResultDataSource resultDataSource;
// lists of result
private List<Result> mainDataList = null;
private ArrayList<Result> arraylist;
// instance constructor
public ResultsAdapter(Context context, List<Result> mainDataList,
ResultDataSource resultDataSource) {
this.resultDataSource = resultDataSource;
mContext = context;
inflater = LayoutInflater.from(mContext);
// create a copy of the main list so we don't end up damagaing the original list
this.arraylist = new ArrayList<Result>();
this.arraylist.addAll(mainDataList);
}
@Override
public int getCount() {
return arraylist.size();
}
@Override
public Object getItem(int position) {
return arraylist.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView( int index, View view, final ViewGroup parent) {
if (view == null) {
// build inflater to create a new row for each row in the Results table
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.inflate(R.layout.activity_list_template_results, parent, false);
}
Log.i("Results Adapter ", "mainDataList is of size " + arraylist.size() + " index is " + index);
// create an result that will hold the data for the row item.
final Result result = arraylist.get(index);
// instance of the finish button
final Button btnFinish = (Button) view.findViewById(R.id.btn_boat_finished);
// instance of the finish button
final Button btnReset = (Button) view.findViewById(R.id.btn_boat_reset_finished);
// wire text views and set the associated text to them.
final TextView tv1 = (TextView) view.findViewById(R.id.txt_hd_results_ID);
tv1.setText(result.getResultsId() + "");
final TextView tv2 = (TextView) view.findViewById(R.id.txt_hd_results_race_id);
tv2.setText(result.getResultsRaceId() + "");
final TextView tv3 = (TextView) view.findViewById(R.id.txt_hd_results_boat_id);
tv3.setText(result.getResultsBoatId() + "");
final TextView tv4 = (TextView) view.findViewById(R.id.txt_hd_results_Visible);
tv4.setText(result.getResultsVisible() + "");
final TextView tv5 = (TextView) view.findViewById(R.id.txt_hd_results_Name);
tv5.setText(result.getBoatName() + "");
final TextView tv6 = (TextView) view.findViewById(R.id.txt_hd_results_Class);
tv6.setText(result.getBoatClass() + "");
final TextView tv7 = (TextView) view.findViewById(R.id.txt_hd_results_SailNum);
tv7.setText(result.getBoatSailNum() + "");
final TextView tv8 = (TextView) view.findViewById(R.id.txt_hd_finish_time);
if (result.getResultsBoatFinishTime() != null) {
tv8.setText(result.getResultsBoatFinishTime() + "");
} else {
tv8.setText("");
}
final View finalView = view;
// add the text views the list
final ArrayList<TextView> textViews = new ArrayList<TextView>() {{
add(tv1);
add(tv2);
add(tv3);
add(tv4);
add(tv5);
add(tv6);
add(tv7);
add(tv8);
}};
// programmatically change text style.
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#000000")); // make the text black
t.setTypeface(Typeface.DEFAULT_BOLD); // make text bold
}
Result r = arraylist.get(index);
// on refresh of list.
// If there is a finish time present then make the row red
if (r.getResultsBoatFinishTime() != null) {
//hide the finish button and show the reset button instead.
btnFinish.setVisibility(View.GONE);
btnReset.setVisibility(View.VISIBLE);
// set the text of the reset button. Click count to reset is 3
btnReset.setText("Reset [3]");
//set the row color to red
view.setBackgroundColor(view.getResources().getColor(R.color.red06));
//set the text of each text box white
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#ffffff")); // make the text white
}
}
// set the function of each finish button
btnFinish.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
LocalTime localTime = LocalTime.now();// capture the current time
//format time as string
String timeFormatted = GlobalContent.localTimeToString(localTime);
//insert time into database.
resultDataSource.updateFinishTime(result.getResultsId(), timeFormatted);
//set the result entry's finish time to the same.
result.setResultsBoatFinishTime(timeFormatted);
Log.i(LOGTAG, "Finish time for " + result.getBoatName() + " is: " + localTime + " formatted: " + timeFormatted);
//hide the finish button and show the reset button instead.
btnFinish.setVisibility(View.GONE);
btnReset.setVisibility(View.VISIBLE);
// set the text of the reset button. Click count to reset is 3
btnReset.setText("Reset [3]");
//set the row color to red
finalView.setBackgroundColor(v.getResources().getColor(R.color.red06));
//set the text of each text box white
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#ffffff")); // make the text white
}
notifyDataSetChanged();
}
});
// resets the finish time to 0 after 3 clicks
btnReset.setOnClickListener(new View.OnClickListener() {
int counter = 3; // initial click count
@Override
public void onClick(View v) {
String message; // message to pass to the user
if (counter == 1) { // check how many clicks are left, if 1 then...
//blank out database entry
resultDataSource.updateFinishTime(result.getResultsId(), null);
//blank out result object fnish time entry
result.setResultsBoatFinishTime(null);
//hide reset button and show finish button
btnReset.setVisibility(View.GONE);
btnFinish.setVisibility(View.VISIBLE);
counter = 3; // reset counter
//output message
message = result.getBoatName() + "'s finish time is now RESET";
//set the row color to transparent
finalView.setBackgroundColor(Color.parseColor("#00000000"));
// make each text box text black
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#000000")); // make the text black
}
notifyDataSetChanged();
} else {
counter--; // decrement the click counter
//state how many clicks are left in the toast menu
message = "To reset, click \"Reset\" " + counter + " more times";
//change the reset button text to indicate how many clicks are left.
btnReset.setText("Reset [" + counter + "]");
}
Toast.makeText(v.getContext(), message, Toast.LENGTH_LONG).show();
}
});
return view;
}
//filter results based on text entered into text box in the Results menu
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
mainDataList.clear();
if (charText.length() == 0) {
mainDataList.addAll(arraylist);
} else {
for (Result result : arraylist) {
if (result.getBoatName().toLowerCase(Locale.getDefault())
.contains(charText)) {
mainDataList.add(result);
}
}
}
notifyDataSetChanged();
}
}
if (r.getResultsBoatFinishTime() != null) {
/* ... */
//set the row color to red
view.setBackgroundColor(view.getResources().getColor(R.color.red06));
/* ... */
}
您忘记了 View 回收。 View 你涂成红色的也被重新用于显示其他行。由于您已将 View 的背景颜色设置为红色，因此其他行也将具有红色背景。
一个简单的解决方案是添加一个 else 分支：
} else {
view.setBackgroundColor(view.getResources().getColor(R.color.myoriginalcolor));
}
我正在尝试为自定义列表视图制作 ArrayAdapter。当用户单击 listView 上的 "finish" 时，我希望该特定条目的行颜色变为红色，然后隐藏 "finish" 按钮并显示另一个名为 [=19= 的按钮].到目前为止，这很好用，但它会更改可滚动列表中更下方行的行和按钮配置。
我研究了许多不同的解决方案，并且几乎尝试了我所看到的所有建议。我一定是遗漏了什么...
public class ResultsAdapter extends BaseAdapter {
private static String LOGTAG = "Logtag: " + Thread.currentThread()
.getStackTrace()[2].getClass().getSimpleName(); // log tag for records
Context mContext; // add context
LayoutInflater inflater; // instance of inflater
ResultDataSource resultDataSource;
// lists of result
private List<Result> mainDataList = null;
private ArrayList<Result> arraylist;
// instance constructor
public ResultsAdapter(Context context, List<Result> mainDataList,
ResultDataSource resultDataSource) {
this.resultDataSource = resultDataSource;
mContext = context;
inflater = LayoutInflater.from(mContext);
// create a copy of the main list so we don't end up damagaing the original list
this.arraylist = new ArrayList<Result>();
this.arraylist.addAll(mainDataList);
}
@Override
public int getCount() {
return arraylist.size();
}
@Override
public Object getItem(int position) {
return arraylist.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView( int index, View view, final ViewGroup parent) {
if (view == null) {
// build inflater to create a new row for each row in the Results table
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.inflate(R.layout.activity_list_template_results, parent, false);
}
Log.i("Results Adapter ", "mainDataList is of size " + arraylist.size() + " index is " + index);
// create an result that will hold the data for the row item.
final Result result = arraylist.get(index);
// instance of the finish button
final Button btnFinish = (Button) view.findViewById(R.id.btn_boat_finished);
// instance of the finish button
final Button btnReset = (Button) view.findViewById(R.id.btn_boat_reset_finished);
// wire text views and set the associated text to them.
final TextView tv1 = (TextView) view.findViewById(R.id.txt_hd_results_ID);
tv1.setText(result.getResultsId() + "");
final TextView tv2 = (TextView) view.findViewById(R.id.txt_hd_results_race_id);
tv2.setText(result.getResultsRaceId() + "");
final TextView tv3 = (TextView) view.findViewById(R.id.txt_hd_results_boat_id);
tv3.setText(result.getResultsBoatId() + "");
final TextView tv4 = (TextView) view.findViewById(R.id.txt_hd_results_Visible);
tv4.setText(result.getResultsVisible() + "");
final TextView tv5 = (TextView) view.findViewById(R.id.txt_hd_results_Name);
tv5.setText(result.getBoatName() + "");
final TextView tv6 = (TextView) view.findViewById(R.id.txt_hd_results_Class);
tv6.setText(result.getBoatClass() + "");
final TextView tv7 = (TextView) view.findViewById(R.id.txt_hd_results_SailNum);
tv7.setText(result.getBoatSailNum() + "");
final TextView tv8 = (TextView) view.findViewById(R.id.txt_hd_finish_time);
if (result.getResultsBoatFinishTime() != null) {
tv8.setText(result.getResultsBoatFinishTime() + "");
} else {
tv8.setText("");
}
final View finalView = view;
// add the text views the list
final ArrayList<TextView> textViews = new ArrayList<TextView>() {{
add(tv1);
add(tv2);
add(tv3);
add(tv4);
add(tv5);
add(tv6);
add(tv7);
add(tv8);
}};
// programmatically change text style.
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#000000")); // make the text black
t.setTypeface(Typeface.DEFAULT_BOLD); // make text bold
}
Result r = arraylist.get(index);
// on refresh of list.
// If there is a finish time present then make the row red
if (r.getResultsBoatFinishTime() != null) {
//hide the finish button and show the reset button instead.
btnFinish.setVisibility(View.GONE);
btnReset.setVisibility(View.VISIBLE);
// set the text of the reset button. Click count to reset is 3
btnReset.setText("Reset [3]");
//set the row color to red
view.setBackgroundColor(view.getResources().getColor(R.color.red06));
//set the text of each text box white
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#ffffff")); // make the text white
}
}
// set the function of each finish button
btnFinish.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
LocalTime localTime = LocalTime.now();// capture the current time
//format time as string
String timeFormatted = GlobalContent.localTimeToString(localTime);
//insert time into database.
resultDataSource.updateFinishTime(result.getResultsId(), timeFormatted);
//set the result entry's finish time to the same.
result.setResultsBoatFinishTime(timeFormatted);
Log.i(LOGTAG, "Finish time for " + result.getBoatName() + " is: " + localTime + " formatted: " + timeFormatted);
//hide the finish button and show the reset button instead.
btnFinish.setVisibility(View.GONE);
btnReset.setVisibility(View.VISIBLE);
// set the text of the reset button. Click count to reset is 3
btnReset.setText("Reset [3]");
//set the row color to red
finalView.setBackgroundColor(v.getResources().getColor(R.color.red06));
//set the text of each text box white
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#ffffff")); // make the text white
}
notifyDataSetChanged();
}
});
// resets the finish time to 0 after 3 clicks
btnReset.setOnClickListener(new View.OnClickListener() {
int counter = 3; // initial click count
@Override
public void onClick(View v) {
String message; // message to pass to the user
if (counter == 1) { // check how many clicks are left, if 1 then...
//blank out database entry
resultDataSource.updateFinishTime(result.getResultsId(), null);
//blank out result object fnish time entry
result.setResultsBoatFinishTime(null);
//hide reset button and show finish button
btnReset.setVisibility(View.GONE);
btnFinish.setVisibility(View.VISIBLE);
counter = 3; // reset counter
//output message
message = result.getBoatName() + "'s finish time is now RESET";
//set the row color to transparent
finalView.setBackgroundColor(Color.parseColor("#00000000"));
// make each text box text black
for (TextView t : textViews) {
t.setTextColor(Color.parseColor("#000000")); // make the text black
}
notifyDataSetChanged();
} else {
counter--; // decrement the click counter
//state how many clicks are left in the toast menu
message = "To reset, click \"Reset\" " + counter + " more times";
//change the reset button text to indicate how many clicks are left.
btnReset.setText("Reset [" + counter + "]");
}
Toast.makeText(v.getContext(), message, Toast.LENGTH_LONG).show();
}
});
return view;
}
//filter results based on text entered into text box in the Results menu
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
mainDataList.clear();
if (charText.length() == 0) {
mainDataList.addAll(arraylist);
} else {
for (Result result : arraylist) {
if (result.getBoatName().toLowerCase(Locale.getDefault())
.contains(charText)) {
mainDataList.add(result);
}
}
}
notifyDataSetChanged();
}
}
if (r.getResultsBoatFinishTime() != null) {
/* ... */
//set the row color to red
view.setBackgroundColor(view.getResources().getColor(R.color.red06));
/* ... */
}
您忘记了 View 回收。 View 你涂成红色的也被重新用于显示其他行。由于您已将 View 的背景颜色设置为红色，因此其他行也将具有红色背景。
一个简单的解决方案是添加一个 else 分支：
} else {
view.setBackgroundColor(view.getResources().getColor(R.color.myoriginalcolor));
}