使用多个自定义首选项可显示，布局，首选项标题和共享的首选项值
我创建了一个自定义首选项视图，当在我的首选项屏幕中使用单个实例时，它可以完美地工作，但是当插入多个实例时，一切都变得一团糟。有些实例带有其他实例的标题，单击时说view1，然后改为view2聚焦，等等。我认为我的OnCreateView函数或布局文件{ {1}}属性。
请认识到我的pref_plates.xml（“首选项”屏幕）中的首选项标题与屏幕快照图像中的首选项标题之间的区别，以便更好地理解我的问题。
limited_editextpreference_view.xml（布局文件）：
android:idlimited_edittextpreference_attrib.xml（自定义属性文件）：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/widget_frame"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="@+id/lep_sub_rl"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="26dp"
android:minHeight="40dp">
<TextView
android:id="@+id/txt_lep_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_above="@+id/txt_lep_summary"
android:layout_toLeftOf="@id/txt_lep_edit"
android:text="General Ammount"
android:ellipsize="end"
android:gravity="bottom"
android:textColor="#302f2f"
android:textSize="16sp" />
<TextView
android:id="@+id/txt_lep_summary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:ellipsize="end"
android:layout_toLeftOf="@id/txt_lep_edit"
android:text="General Ammount Summary"
android:maxLines="1"
android:layout_alignBottom="@+id/txt_lep_edit"
android:textSize="12sp" />
<EditText
android:id="@+id/txt_lep_edit"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:layout_toLeftOf="@id/txt_lep_unit"
android:background="@null"
android:textColor="@color/colorAccent"
android:layout_centerInParent="true"
android:textAlignment="textEnd" />
<TextView
android:id="@+id/txt_lep_unit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:maxLength="3"
android:text="%"
android:paddingBottom="2dp"
android:textColor="@color/colorAccent"
android:textAlignment="textEnd"
android:textSize="22sp" />
</RelativeLayout>
</LinearLayout >
pref_plates.xml（“首选项”屏幕）：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="LimitedEditTextPreference">
<attr name="lep_type" format="enum">
<enum name="integerOnly" value="0"/>
<enum name="doubleOnly" value="1"/>
</attr>
<attr name="lep_minValue" format="float"/>
<attr name="lep_maxValue" format="float"/>
<attr name="lep_unit" format="string"/>
</declare-styleable>
</resources>
LimitedEditTextPreference.java：
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto">
<PreferenceCategory android:title="Contour Filtering">
<SwitchPreference
android:id="@+id/id_enableContourFiltering"
android:defaultValue="true"
android:key="enableContourFiltering"
android:title="@string/contour_filtering" />
<ListPreference
android:id="@+id/id_maxPlateNumber"
android:defaultValue="2"
android:dependency="enableContourFiltering"
android:entries="@array/maxPlateNumber_array"
android:entryValues="@array/maxPlateNumber_array_values"
android:key="maxPlateNumber"
android:negativeButtonText="@null"
android:positiveButtonText="@null"
android:title="@string/maxPlateNumber" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_rRecMinArea"
android:defaultValue="1000"
android:dependency="enableContourFiltering"
android:key="rRecMinArea"
android:title="Rotated Rectangle Min Area"
custom:lep_maxValue="1000000"
custom:lep_minValue="1"
custom:lep_type="integerOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_rRecMaxArea"
android:defaultValue="8799"
android:dependency="enableContourFiltering"
android:key="rRecMaxArea"
android:title="Rotated Rectangle Max Area"
custom:lep_maxValue="1000000"
custom:lep_minValue="1"
custom:lep_type="integerOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_rRectMinRatio"
android:defaultValue="0.19"
android:dependency="enableContourFiltering"
android:key="rRectMinRatio"
android:title="Rotated Rectangle Min Ratio"
custom:lep_maxValue="1"
custom:lep_minValue="0.1"
custom:lep_type="doubleOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_rRectMaxRatio"
android:defaultValue="0.83"
android:dependency="enableContourFiltering"
android:key="rRectMaxRatio"
android:title="Rotated Rectangle Max Ratio"
custom:lep_maxValue="1"
custom:lep_minValue="0.1"
custom:lep_type="doubleOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_bBoxMinRatio"
android:defaultValue="0.17"
android:dependency="enableContourFiltering"
android:key="bBoxMinRatio"
android:title="Bounding Box Min Ratio"
custom:lep_maxValue="1"
custom:lep_minValue="0.1"
custom:lep_type="doubleOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_bBoxMaxRatio"
android:defaultValue="0.86"
android:dependency="enableContourFiltering"
android:key="bBoxMaxRatio"
android:title="Bounding Box Max Ratio"
custom:lep_maxValue="1"
custom:lep_minValue="0.1"
custom:lep_type="doubleOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_extent"
android:defaultValue="0.6"
android:dependency="enableContourFiltering"
android:key="extent"
android:title="Extent"
custom:lep_maxValue="1"
custom:lep_minValue="0.1"
custom:lep_type="doubleOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_zrPlate"
android:defaultValue="0.4"
android:dependency="enableContourFiltering"
android:key="zrPlate"
android:title="Zr Plate"
custom:lep_maxValue="1"
custom:lep_minValue="0.1"
custom:lep_type="doubleOnly" />
</PreferenceCategory>
<PreferenceCategory android:title="Plate Aspects">
<SwitchPreference
android:id="@+id/id_isAllNewPlate"
android:defaultValue="true"
android:disableDependentsState="true"
android:key="isAllNewPlate"
android:summary="@string/isAllNewPlateSummary"
android:title="@string/isAllNewPlate" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_hightWidePlate"
android:defaultValue="50"
android:dependency="isAllNewPlate"
android:key="hightWidePlate"
android:title="Wide Plate Height"
custom:lep_maxValue="10000"
custom:lep_minValue="1"
custom:lep_type="integerOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_widthWidePlate"
android:defaultValue="200"
android:dependency="isAllNewPlate"
android:key="widthWidePlate"
android:title="Wide Plate Width"
custom:lep_maxValue="10000"
custom:lep_minValue="1"
custom:lep_type="integerOnly" />
<bi.anpr.layouts.LimitedEditTextPreference
android:id="@+id/id_widthSmallPlate"
android:defaultValue="100"
android:dependency="isAllNewPlate"
android:key="widthSmallPlate"
android:title="Small Plate Width"
custom:lep_maxValue="10000"
custom:lep_minValue="1"
custom:lep_type="integerOnly" />
</PreferenceCategory>
</PreferenceScreen>
首选项屏幕截图：
1 个答案:
答案 0 :(得分：0)
我通过将内部视图findViewById从onCreateView移到onBindView来解决了这个问题，如下所示：
private enum InputType {
integerOnly, decimalOnly;
}
private int lastSavedIntValue = -1;
private float min = 0, max = 100, dv = min, lastSavedDoubleValue = -1;
private String unit = "";
private InputType inputType = InputType.integerOnly;
private EditText editText;
private TextView txt_title, txt_summary, txt_unit;
private Context context_;
public LimitedEditTextPreference(Context context, AttributeSet attrs) {
super(context, attrs);
context_ = context;
readAttributes(context, attrs, -1, -1);
}
public LimitedEditTextPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
context_ = context;
readAttributes(context, attrs, defStyleAttr, defStyleRes);
}
public void readAttributes(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
TypedArray attr = null;
if (defStyleAttr == -1)
attr = context.obtainStyledAttributes(attrs, R.styleable.LimitedEditTextPreference);
else
attr = context.obtainStyledAttributes(attrs, R.styleable.LimitedEditTextPreference, defStyleAttr, defStyleRes);
int type = attr.getInt(R.styleable.LimitedEditTextPreference_lep_type,0);
if (type==1)
inputType = InputType.decimalOnly;
min = attr.getFloat(R.styleable.LimitedEditTextPreference_lep_minValue, 0);
max = attr.getFloat(R.styleable.LimitedEditTextPreference_lep_maxValue, 100);
unit = attr.getString(R.styleable.LimitedEditTextPreference_lep_unit);
TypedArray defaltValAttr = context.obtainStyledAttributes(attrs, new int[]{android.R.attr.defaultValue});
dv = defaltValAttr.getFloat(0, min);
attr.recycle();
defaltValAttr.recycle();
}
@Override
protected synchronized View onCreateView(ViewGroup parent) {
super.onCreateView(parent);
LayoutInflater li = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = li.inflate(R.layout.limited_edittextpreference_view, parent, false);
return v;
}
@Override
public void notifyDependencyChange(boolean disableDependents) {
super.notifyDependencyChange(disableDependents);
notifyChanged();
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
SharedPreferences sharedPref = context_.getSharedPreferences("Configs", Context.MODE_PRIVATE);
editText = (EditText) view.findViewById(R.id.txt_lep_edit);
txt_title = (TextView) view.findViewById(R.id.txt_lep_title);
txt_summary = (TextView) view.findViewById(R.id.txt_lep_summary);
txt_unit = (TextView) view.findViewById(R.id.txt_lep_unit);
txt_title.setText(getTitle());
txt_unit.setText(unit);
if (getSummary() != null && getSummary().toString().trim().length() > 1)
txt_summary.setText(getSummary());
else {
txt_summary.setText("");
txt_summary.setTextSize(0);
}
if (inputType == InputType.integerOnly) {
lastSavedIntValue = sharedPref.getInt(getKey(), (int) dv);
editText.setText(String.valueOf(lastSavedIntValue));
} else if (inputType == InputType.decimalOnly) {
lastSavedDoubleValue = sharedPref.getFloat(getKey(), dv);
editText.setText(String.valueOf(lastSavedDoubleValue));
}
editText.setFilters(new InputFilter[]{this});
editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
String val = editText.getText().toString();
if (!TextUtils.isEmpty(val)) {
if (inputType == InputType.integerOnly) {
if (Integer.valueOf(val) < min) {
Toast.makeText(context_, getTitle() + ": Accepted input Range = [" + min + ", " + max + "]", Toast.LENGTH_SHORT).show();
editText.setText(String.valueOf(lastSavedIntValue));
editText.clearFocus();
return;
} else
savePref(Integer.valueOf(val));
} else if (inputType == InputType.decimalOnly)
if (Float.valueOf(val) < min) {
Toast.makeText(context_, getTitle() + ": Accepted input Range = [" + min + ", " + max + "]", Toast.LENGTH_SHORT).show();
editText.setText(String.valueOf(lastSavedDoubleValue));
editText.clearFocus();
return;
} else
savePref(Float.valueOf(val));
}
}
});
view.setClickable(true);
view.setFocusable(false);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
editText.requestFocus();
InputMethodManager imm = (InputMethodManager) context_.getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
}
});
}
public void savePref(Number number) {
SharedPreferences sharedPref = context_.getSharedPreferences("Configs", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
if (inputType == InputType.integerOnly) {
editor.putInt(getKey(), number.intValue());
lastSavedIntValue = number.intValue();
} else if (inputType == InputType.decimalOnly) {
editor.putFloat(getKey(), number.floatValue());
lastSavedDoubleValue = number.floatValue();
}
editor.commit();
}
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
try {
String replacement = source.subSequence(start, end).toString();
String newVal = dest.toString().substring(0, dstart) + replacement + dest.toString().substring(dend, dest.toString().length());
if (newVal.equalsIgnoreCase("-")) return null;
if (inputType == InputType.integerOnly) {
int input = Integer.parseInt(newVal);
if (input <= max)
return null;
} else if (inputType == InputType.decimalOnly) {
double input = Float.parseFloat(newVal);
if (input <= max)
return null;
}
} catch (NumberFormatException nfe) {
}
return "";
}
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