| Recursive Mode Spinner |
|---|
 |
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
dependencies {
implementation 'com.github.james602152002:FloatingLabelSpinner:1.2.6'
}
<com.james602152002.floatinglabelspinner.FloatingLabelSpinner
//floating label and hint text color
app:j_fls_textColorHint="@android:color/holo_orange_light"
//divider color
app:j_fls_colorHighlight="#0000FF"
//error color
app:j_fls_colorError="#0000FF"
//floating label text
app:j_fls_hint="label"
//thickness of divider
app:j_fls_thickness="2dp"
//horizontal margin of label
app: j_fls_label_horizontal_margin="2dp"
//vertical margin of label
app: j_fls_label_vertical_margin="2dp"
//horizontal margin of error text
app: j_fls_error_horizontal_margin="2dp"
//vertical margin of error text
app: j_fls_error_vertical_margin="2dp"
//floating label text size
app: j_fls_label_textSize="14sp"
//hint text size
app:j_fls_hint_textSize="20sp"
//error text size
app:j_fls_error_textSize="14sp"
//header of drop down hint view
app:j_fls_dropDownHintView="@layout/header"
//float animation duration(unit：ms)
app:j_fls_float_anim_duration="800"
//scrolling text animation duration(unit：ms)
app:j_fls_error_anim_duration="8000"
//open recursive mode(false to close)
app:j_fls_recursive="true"/>
//floating label text size
setLabel_text_size(float label_text_size);
//hint text size
setHint_text_size(float hint_text_size);
//error text size
setError_text_size(float error_text_size);
//thichness of divider
setThickness(int thickness);
//divider color
setHighlight_color(int color);
//hint text color
setHint_text_color(int color);
//error color
setError_color(int color);
//set error text horizontal and vertical margin
setErrorMargin(int horizontal_margin, int vertical_margin);
//set float label text and hint text(Support ForegroundColorSpan)
spinner.setHint(CharSequence hint);
//set drop down hint view header
spinner.setDropDownHintView(View view);
//set error text(null for cancel error status)
setError(String error);
//set float animation duration(unit：ms)
setAnimDuration(short duration)
//set scrolling text animation duration(unit：ms)
setErrorAnimDuration(short duration)
//set recursive mode, if you have many level data to fetch , you can set it true.
setRecursive_mode(boolean recursive_mode)
//dismiss dialog while recursive mode
dismiss()
//notify datasetchanged while recursive mode
notifyDataSetChanged()
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private FloatingLabelSpinner spinner;
private List<String> data = new ArrayList<>(); @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spinner = findViewById(R.id.spinner);
final int screen_width = getResources().getDisplayMetrics().widthPixels;
final float label_text_size = screen_width / 40;
final float hint_text_size = screen_width / 30;
final short thickness = (short) (screen_width / 250);
spinner.setLabel_text_size(label_text_size);
spinner.setHint_text_size(hint_text_size);
spinner.setError_text_size(label_text_size);
spinner.setThickness(thickness);
spinner.setHighlight_color(Color.parseColor("#FFFF00"));
spinner.setErrorMargin(0, thickness);
spinner.setDropDownHintView(getHintView());
//set your hint as ForegroundColorSpan
SpannableString span = new SpannableString("Spannable String Label *");
span.setSpan(new ForegroundColorSpan(Color.RED), span.length() - 1, span.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
spinner.setHint(span);
fetchData();
adapter = new CommonMaterialSpinnerAdapter(this, data);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//Dismiss spinner when you click drop down hint view header.
if (position == 0) {
spinner.dismiss();
return;
}
switch (current_node) {
case 0:
//Fetch second class data and don't dismiss.
fetch2ndClassData();
break;
case 1:
//When you current in second class just dismiss your dialog.
spinner.dismiss();
return;
}
current_node++;
//Set drop down hint view with back button.
spinner.setDropDownHintView(getHintView());
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
initDivider(thickness);
initButton();
} private void initDivider(short divider_height) {
View divider_1 = findViewById(R.id.divider_1);
View divider_2 = findViewById(R.id.divider_2);
View divider_3 = findViewById(R.id.divider_3);
((LinearLayout.LayoutParams) divider_1.getLayoutParams()).height = divider_height;
((LinearLayout.LayoutParams) divider_2.getLayoutParams()).height = divider_height;
((LinearLayout.LayoutParams) divider_3.getLayoutParams()).height = divider_height;
}
private void initButton() {
Button submit_button = findViewById(R.id.submit);
submit_button.setOnClickListener(this);
}
/*This method to set your hint view*/
public View getHintView() {
final int screen_width = getResources().getDisplayMetrics().widthPixels;
final float label_text_size = screen_width / 40;
final short margins = (short) (screen_width / 40);
final short rect_height = (short) (screen_width / 60);
View hintView = getLayoutInflater().inflate(R.layout.header_of_spinner, null, false);
TextView title = hintView.findViewById(R.id.title);
AppCompatImageView back = hintView.findViewById(R.id.back);
View rect = hintView.findViewById(R.id.rect);
((RelativeLayout.LayoutParams) rect.getLayoutParams()).height = rect_height;
rect.setBackgroundColor(getResources().getColor(android.R.color.holo_blue_dark));
((RelativeLayout.LayoutParams) title.getLayoutParams()).setMargins(margins, margins, margins, margins);
hintView.setBackgroundColor(getResources().getColor(android.R.color.holo_blue_light));
title.setTextSize(TypedValue.COMPLEX_UNIT_PX, label_text_size);
((RelativeLayout.LayoutParams) back.getLayoutParams()).setMargins(margins, 0, margins, 0);
back.setOnClickListener(this);
switch (current_node) {
case 0:
back.setVisibility(View.GONE);
break;
default:
back.setVisibility(View.VISIBLE);
break;
}
return hintView;
} private void fetchData() {
data.clear();
String itemStr = "Item ";
StringBuilder itemBuilder = new StringBuilder();
for (int i = 0; i < 5; i++) {
itemBuilder.delete(0, itemBuilder.length());
itemBuilder.append(itemStr).append(i);
data.add(itemBuilder.toString());
}
spinner.notifyDataSetChanged();
} private void fetch2ndClassData() {
data.clear();
String itemStr = "2nd class item ";
StringBuilder itemBuilder = new StringBuilder();
for (int i = 0; i < 4; i++) {
itemBuilder.delete(0, itemBuilder.length());
itemBuilder.append(itemStr).append(i);
data.add(itemBuilder.toString());
}
spinner.notifyDataSetChanged();
} /*
* Spinner's height depends on getView()'s height,
* and dropDownView are items of Dialog.
* */
class CommonMaterialSpinnerAdapter extends BaseAdapter {
private final List<String> data;
private final LayoutInflater inflater;
private final short drop_down_margins;
private final short margin;
private final float item_text_size;
public CommonMaterialSpinnerAdapter(Context context, List<String> data) {
this.data = data;
this.inflater = LayoutInflater.from(context);
final int screen_width = getResources().getDisplayMetrics().widthPixels;
this.drop_down_margins = (short) (screen_width / 40);
this.margin = (short) (screen_width / 75);
this.item_text_size = screen_width / 30;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
return initView(position, convertView, true);
}
@Override
public void registerDataSetObserver(DataSetObserver observer) {
}
@Override
public void unregisterDataSetObserver(DataSetObserver observer) {
}
@Override
public int getCount() {
return data != null ? data.size() : 0;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return initView(position, convertView, false);
}
@Override
public int getItemViewType(int position) {
return 0;
}
@Override
public boolean isEmpty() {
return true;
}
private View initView(int position, View convertView, boolean drop_down) {
ViewHolder holder = null;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.cell_common_spinner_layout, null, false);
holder.title = convertView.findViewById(R.id.title);
if (drop_down) {
((LinearLayout.LayoutParams) holder.title.getLayoutParams()).setMargins(drop_down_margins, drop_down_margins, drop_down_margins, drop_down_margins);
} else {
((LinearLayout.LayoutParams) holder.title.getLayoutParams()).setMargins(0, margin, 0, margin);
convertView.setBackgroundColor(0);
}
holder.title.setTextSize(TypedValue.COMPLEX_UNIT_PX, item_text_size);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.title.setText(data.get(position));
return convertView;
}
class ViewHolder {
TextView title;
}
} @Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.submit:
//If your set null to error status will cancel.
spinner.setError(TextUtils.isEmpty(spinner.getError()) ? "begin error end" :
"begin error error error error error error error error error error error end");
break;
case R.id.back:
//Back to first level class.
current_node--;
fetchData();
//Reset drop down hint view.
spinner.setDropDownHintView(getHintView());
break;
}
}