android支持多行的radiogroup

java工具类下载地址

上面就是个工具类下载,针对android源生radiogroup对只能单行的一个修改,原因是,源码在addView时候只是向下迭代一层元素。

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * 2013.11.06 updated by xiexiaojian 
 * Support that LinearLayouts or RadioButtons can be all RadioGroup's childrens,
 * we can display more rows and columns at the same time.
 */

package com.sprite.view;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.CompoundButton;
import android.widget.LinearLayout;
import android.widget.RadioButton;


/**
 * 

This class is used to create a multiple-exclusion scope for a set of radio * buttons. Checking one radio button that belongs to a radio group unchecks * any previously checked radio button within the same group.

* *

Intially, all of the radio buttons are unchecked. While it is not possible * to uncheck a particular radio button, the radio group can be cleared to * remove the checked state.

* *

The selection is identified by the unique id of the radio button as defined * in the XML layout file.

* *

XML Attributes

*

See {@link android.R.styleable#RadioGroup RadioGroup Attributes}, * {@link android.R.styleable#LinearLayout LinearLayout Attributes}, * {@link android.R.styleable#ViewGroup ViewGroup Attributes}, * {@link android.R.styleable#View View Attributes}

*

Also see * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams} * for layout attributes.

* * @see RadioButton * */ public class MultiLineRadioGroup extends LinearLayout { // holds the checked id; the selection is empty by default private int mCheckedId = -1; // tracks children radio buttons checked state private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener; // when true, mOnCheckedChangeListener discards events private boolean mProtectFromCheckedChange = false; private OnCheckedChangeListener mOnCheckedChangeListener; private PassThroughHierarchyChangeListener mPassThroughListener; private int otherId = -1; private OnOtherIDTouchListenr mOnOtherIDTouchListenr; public interface OnOtherIDTouchListenr { public void onOtherClick(int otherId); } public void setOnOtherTouchListener(OnOtherIDTouchListenr mOnOtherIDTouchListenr){ this.mOnOtherIDTouchListenr = mOnOtherIDTouchListenr; } public void setOtherTouchId(int id){ otherId = id; } /** * {@inheritDoc} */ public MultiLineRadioGroup(Context context) { super(context); setOrientation(VERTICAL); init(); } /** * {@inheritDoc} */ public MultiLineRadioGroup(Context context, AttributeSet attrs) { super(context, attrs); mCheckedId = View.NO_ID; final int index = VERTICAL; setOrientation(index); init(); } private void init() { mChildOnCheckedChangeListener = new CheckedStateTracker(); mPassThroughListener = new PassThroughHierarchyChangeListener(); super.setOnHierarchyChangeListener(mPassThroughListener); } public void clearAllChecked(){ for(int i = 0;iSets the selection to the radio button whose identifier is passed in * parameter. Using -1 as the selection identifier clears the selection; * such an operation is equivalent to invoking {@link #clearCheck()}.

* * @param id the unique id of the radio button to select in this group * * @see #getCheckedRadioButtonId() * @see #clearCheck() */ public void check(int id) { // don't even bother if (id != -1 && (id == mCheckedId)) { return; } if (mCheckedId != -1) { setCheckedStateForView(mCheckedId, false); } if (id != -1) { setCheckedStateForView(id, true); } setCheckedId(id); } private void setCheckedId(int id) { mCheckedId = id; } private void setCheckedStateForView(int viewId, boolean checked) { View checkedView = findViewById(viewId); if (checkedView != null && checkedView instanceof RadioButton) { ((RadioButton) checkedView).setChecked(checked); } } /** *

Returns the identifier of the selected radio button in this group. * Upon empty selection, the returned value is -1.

* * @return the unique id of the selected radio button in this group * * @see #check(int) * @see #clearCheck() * * @attr ref android.R.styleable#RadioGroup_checkedButton */ public int getCheckedRadioButtonId() { return mCheckedId; } /** *

Clears the selection. When the selection is cleared, no radio button * in this group is selected and {@link #getCheckedRadioButtonId()} returns * null.

* * @see #check(int) * @see #getCheckedRadioButtonId() */ public void clearCheck() { check(-1); } /** *

Register a callback to be invoked when the checked radio button * changes in this group.

* * @param listener the callback to call on checked state change */ public void setOnCheckedChangeListener(OnCheckedChangeListener listener) { mOnCheckedChangeListener = listener; } /** * {@inheritDoc} */ @Override public LayoutParams generateLayoutParams(AttributeSet attrs) { return new MultiLineRadioGroup.LayoutParams(getContext(), attrs); } /** * {@inheritDoc} */ @Override protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { return p instanceof MultiLineRadioGroup.LayoutParams; } @Override protected LinearLayout.LayoutParams generateDefaultLayoutParams() { return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); } @SuppressLint("NewApi") @Override public void onInitializeAccessibilityEvent(AccessibilityEvent event) { super.onInitializeAccessibilityEvent(event); event.setClassName(MultiLineRadioGroup.class.getName()); } @SuppressLint("NewApi") @Override public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { super.onInitializeAccessibilityNodeInfo(info); info.setClassName(MultiLineRadioGroup.class.getName()); } /** *

This set of layout parameters defaults the width and the height of * the children to {@link #WRAP_CONTENT} when they are not specified in the * XML file. Otherwise, this class ussed the value read from the XML file.

* *

See * {@link android.R.styleable#LinearLayout_Layout LinearLayout Attributes} * for a list of all child view attributes that this class supports.

* */ public static class LayoutParams extends LinearLayout.LayoutParams { /** * {@inheritDoc} */ public LayoutParams(Context c, AttributeSet attrs) { super(c, attrs); } /** * {@inheritDoc} */ public LayoutParams(int w, int h) { super(w, h); } /** * {@inheritDoc} */ public LayoutParams(int w, int h, float initWeight) { super(w, h, initWeight); } /** * {@inheritDoc} */ public LayoutParams(ViewGroup.LayoutParams p) { super(p); } /** * {@inheritDoc} */ public LayoutParams(MarginLayoutParams source) { super(source); } /** *

Fixes the child's width to * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} and the child's * height to {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} * when not specified in the XML file.

* * @param a the styled attributes set * @param widthAttr the width attribute to fetch * @param heightAttr the height attribute to fetch */ @Override protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr) { if (a.hasValue(widthAttr)) { width = a.getLayoutDimension(widthAttr, "layout_width"); } else { width = WRAP_CONTENT; } if (a.hasValue(heightAttr)) { height = a.getLayoutDimension(heightAttr, "layout_height"); } else { height = WRAP_CONTENT; } } } /** *

Interface definition for a callback to be invoked when the checked * radio button changed in this group.

*/ public interface OnCheckedChangeListener { /** *

Called when the checked radio button has changed. When the * selection is cleared, checkedId is -1.

* * @param group the group in which the checked radio button has changed * @param checkedId the unique identifier of the newly checked radio button */ public void onCheckedChanged(MultiLineRadioGroup group, int checkedId); } private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // prevents from infinite recursion if (mProtectFromCheckedChange) { return; } mProtectFromCheckedChange = true; if (mCheckedId != -1) { setCheckedStateForView(mCheckedId, false); } mProtectFromCheckedChange = false; int id = buttonView.getId(); setCheckedId(id); } } /** *

A pass-through listener acts upon the events and dispatches them * to another listener. This allows the table layout to set its own internal * hierarchy change listener without preventing the user to setup his.

*/ private class PassThroughHierarchyChangeListener implements ViewGroup.OnHierarchyChangeListener { private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener; /** * {@inheritDoc} */ public void onChildViewAdded(View parent, View child) { if (parent == MultiLineRadioGroup.this && child instanceof RadioButton) { int id = child.getId(); // generates an id if it's missing if (id == View.NO_ID) { id = child.hashCode(); child.setId(id); } ((RadioButton) child).setOnCheckedChangeListener( mChildOnCheckedChangeListener); } if (mOnHierarchyChangeListener != null) { mOnHierarchyChangeListener.onChildViewAdded(parent, child); } } /** * {@inheritDoc} */ public void onChildViewRemoved(View parent, View child) { if (parent == MultiLineRadioGroup.this && child instanceof RadioButton) { ((RadioButton) child).setOnCheckedChangeListener(null); } if (mOnHierarchyChangeListener != null) { mOnHierarchyChangeListener.onChildViewRemoved(parent, child); } } } }


你可能感兴趣的:(android,java)