如何从开到关开关按钮图像,反之亦然后单击? [英] How to switch button image from on to off and vice versa upon click?
问题描述
我一直在试图从开到关,反之亦然切换我的按钮的状态,通过添加图像,并添加图像为关闭状态。我试图通过XML,但是我只是能在点击暂时切换(通过使用preSS /聚焦等)。这里是$ C $下是相同的:
I have been trying to switch the state of my buttons from on to off and vice versa, by adding an image for on and adding an image for off state. I tried through xml, however I was just able to temporarily switch it upon click (by using press/focus etc). Here is the code for the same:
fragment_justin:
fragment_justin:
<RelativeLayout
android:id="@+id/top_bar_container"
android:layout_width="match_parent"
android:layout_height="48.5dp"
android:layout_alignParentTop="true"
android:background="@color/background_action_bar"
android:orientation="horizontal" >
<ImageButton
android:id="@+id/menu_button"
android:layout_width="30dp"
android:layout_height="48.5dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="@android:color/transparent"
android:paddingRight="24dp"
android:src="@drawable/overflow_btn" />
<com.justin.abc.FontTextView
android:id="@+id/most_recent_text"
android:layout_width="wrap_content"
android:layout_height="48.5dp"
android:layout_marginLeft="11dp"
android:layout_marginRight="2dp"
android:textColor="@color/white"
foo:customFont="Cabin-Bold.ttf"
android:layout_alignParentLeft="true"
android:textSize="18sp"
android:gravity="center_vertical"
android:text="@string/most_recent"/>
</RelativeLayout>
聚焦刚上ImageButton的一部分,你会看到overflow_btn。现在overflow_btn是一类下抽拉叫,如下:
Focussing just on the imagebutton part,you'll see the overflow_btn. Now overflow_btn is a class called under drawable , as follows:
overflow_btn:
overflow_btn:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_enabled="false"
android:drawable="@drawable/overflow_pressed" />
<item
android:state_pressed="true"
android:state_enabled="true"
android:drawable="@drawable/overflow_pressed" />
<item
android:state_focused="true"
android:state_enabled="true"
android:drawable="@drawable/overflow_pressed" />
<item
android:state_enabled="true"
android:drawable="@drawable/overflow" />
</selector>
当使用上述code,它暂时切换,只有当挖(如闪烁,以overflow_ pressed),并恢复到溢出按钮的状态。 我相信有可能是这种情况发生在java code需要做一些改变,因此这里是对应的Java类:
Upon using the above code, it temporarily switches the button states only when tapped ( like it flashes to overflow_pressed) and reverts back to overflow. I believe there might be some changes required in the java code for this to happen,Hence here's the corresponding java class :
@Override
public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.fragment_justin, container, false);
createMenus() ;
setOnclickListeners(view);
mAdapter = new CursorAdapter(getActivity(), null, 0);
final ListView list = (ListView) view.findViewById(R.id.justin_list);
list.setAdapter(mAdapter);
list.setOnItemLongClickListener(this);
list.setOnTouchListener(this);
list.setOnItemClickListener(this);
LayoutUtils.showLoading(view, R.id.justin_list);
return view;
}
private void setOnclickListeners(final View view){
final ImageButton button = (ImageButton) view.findViewById(R.id.menu_button);
button.setOnClickListener(this);
}
private void createMenus() {
mPreferenceMenuItems.add(PreferenceMenuItems.JUSTIN_PREFERENCES);
mPreferencesMenuHelper = new MenuHelper(getActivity(), mPreferenceMenuItems,this);
mDeleteMenuItems.add(DeleteMenuItems.DELETE_JUSTIN);
mDeleteMenuHelper = new MenuHelper(getActivity(), mDeleteMenuItems,this);
}
@Override
public void onResume() {
super.onResume();
final MainActivity activity = (MainActivity) getActivity();
activity.updateActionBarTitle();
final IntentFilter filter = new IntentFilter();
activity.getApplicationContext().registerReceiver(mReceiver, filter);
}
@Override
public void onPause() {
getActivity().getApplicationContext().unregisterReceiver(mReceiver);
super.onPause();
}
@Override
public void onCursorLoaded(final Uri uri, final Cursor cursor) {
if (cursor.getCount() > 0) {
mAdapter.swapCursor(cursor);
showResults(uri);
} else {
if (!isOperationExecuting()) {
showNoResults(uri);
}
}
}
@Override
public void onMenuItemClicked(final int position) {
if (isPreferences) {
switch (position) {
case PreferenceMenuItems.JUSTIN_PREFERENCES_POSITION:
PreferencesActivity.newInstance(getActivity());
break;
default:
break;
}
mPreferencesMenuHelper.hideMenu();
} else {
switch (position) {
case DeleteMenuItems.DELETE_POSITION:
final DialogFragment dialog = new DeleteFromDialogFragment();
final Bundle bundle = new Bundle();
bundle.putString(JUSTIN_ID, mJustinID);
dialog.setArguments(bundle);
dialog.show(getFragmentManager(), DELETE_FROM_JUSTIN );
break;
default:
break;
}
mDeleteMenuHelper.hideMenu();
}
}
@Override
public void onClick(final View view) {
switch (view.getId()) {
case R.id.justin_menu_button:
final Activity activity = getActivity();
final int actionBarHeight = activity.findViewById(R.id.title_main_container).getHeight();
final int menuBarHeight = activity.findViewById(R.id.justin_top_bar_container).getHeight();
mPreferencesMenuHelper.showMenu(actionBarHeight + menuBarHeight, Gravity.RIGHT, R.style.MenuDialogAnimation);
isPreferences = true;
break;
default:
break;
}
}
@Override
public void showResults(final Uri uri) {
if (mIsAnimating) {
mShouldShowResult = true;
} else {
LayoutUtils.showResults(getView(), R.id.justin_list);
mShouldShowResult = false;
}
}
@Override
public void showNoResults(final Uri uri) {
if (mIsAnimating) {
mShouldShowNoResult = true;
} else {
LayoutUtils.showNoResult(getView(), R.id.justin_list, getResources().getString(R.string.no_result));
mShouldShowNoResult = false;
}
}
@Override
public void onOperationStarted(final Uri uri) {
LayoutUtils.showLoading(getView(), R.id.justin_list);
}
@Override
public boolean onItemLongClick(final AdapterView<?> adapter, final View view, final int position, final long id) {
isPreferences = false;
final Activity activity = getActivity();
final int actionBarHeight = activity.findViewById(R.id.title_main_container).getHeight();
final int menuBarHeight = activity.findViewById(R.id.justin_top_bar_container).getHeight();
mDeleteMenuHelper.showMenu(mYValue + actionBarHeight + menuBarHeight, Gravity.CENTER, R.style.MenuDialogAnimation);
final Cursor cursor = (Cursor) mAdapter.getItem(position);
mJustinID = cursor.getString(cursor.getColumnIndex(Justin.Columns.ID));
return false;
}
@Override
public boolean onTouch(final View v, final MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN){
mYValue = (int)event.getY();
}
return false;
}
public void restartLoader(){
getContentLoader().restartLoader();
}
@Override
public void onItemClick(final AdapterView<?> adapter, final View view, final int position, final long id) {
final Cursor cursor = (Cursor) mAdapter.getItem(position);
if (!NetworkUtils.isOnline() && ContentProvider.isStoryEmty(cursor)) {
final DialogFragment dialog = new CheckOfflineAccessDialogFragment();
dialog.show(getFragmentManager(), OFFLINE_ACCESS);
return;
}
final String documentSource = cursor.getString(cursor.getColumnIndex(Justin.Columns.SOURCE));
final ArticlePagerFragment ArticlePagerFragment = ArticlePagerFragment.newInstance(getFragmentManager(), position, documentSource, false);
ArticlePagerFragment.setFragment(this);
}
public static String getArticleID(final Cursor cursor) {
final String documentLink = cursor.getString(cursor.getColumnIndex(Justin.Columns.DOCUMENT_LINK));
final String documentType = cursor.getString(cursor.getColumnIndex(Justin.Columns.TYPE));
final String source = cursor.getString(cursor.getColumnIndex(Justin.Columns.SOURCE));
String articleID = "";
if (source.equalsIgnoreCase(Justin.NEWS_SOURCE_VALUE) && documentType.equalsIgnoreCase(Justin.TEXT_TYPE)) {
articleID = documentLink.substring(documentLink.lastIndexOf("storyId=")+8);
}
return articleID;
}
不知道如何去差不多吗?
Any idea how to go about the same?
MenuHelper:
MenuHelper:
public class MenuHelper implements OnItemClickListener{
private final Dialog mMenu;
private final OnMenuItemClickedListener mMenuItemListener;
private final ArrayAdapter<String> mAdapter;
private final int MENU_ITEM_HEIGHT = 40; // Defined in res/layout/menu_item.xml
private List<Boolean> enabledStates;
public MenuHelper(final Context context, final List<String> menuItems, final OnMenuItemClickedListener menuItemListener) {
mMenu = new Dialog(context);
mMenu.requestWindowFeature(Window.FEATURE_NO_TITLE);
mMenu.setContentView(R.layout.menu_container);
enabledStates = new ArrayList<Boolean>(menuItems.size());
for(int i = 0; i < menuItems.size(); i++) {
enabledStates.add(true);
}
final ListView menuList = (ListView) mMenu.findViewById(R.id.menu_list);
mAdapter = new ArrayAdapter<String>(context, R.layout.menu_item, menuItems) {
@Override
public boolean isEnabled(int position) {
return enabledStates.get(position);
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
if(enabledStates.get(position)) {
((TextView) view).setTextColor(Application.getAppResources().getColor(R.color.white));
} else {
((TextView) view).setTextColor(Application.getAppResources().getColor(R.color.disabled_gray));
}
if (convertView == null) {
convertView = super.getView(position, convertView, parent);
}
// check for odd or even to set alternate colors to the row background
if (position % 2 == 0) {
convertView.setBackgroundResource(R.drawable.oddcellcolor);
} else {
convertView.setBackgroundResource(R.drawable.evencellcolor);
}
return convertView;
//return view;
}
};
menuList.setOnItemClickListener(this);
menuList.setAdapter(mAdapter);
mMenuItemListener = menuItemListener;
}
public void showMenu(final int yPosition, final int horizontalGravity) {
showMenu(yPosition, horizontalGravity, R.style.MenuDialogAnimation);
}
public void setEnabled(int position, boolean isEnabled) {
enabledStates.set(position, isEnabled);
mAdapter.notifyDataSetChanged();
}
public void setEnabledAll(boolean isEnabled) {
for(int ii = 0; ii < enabledStates.size(); ii++) {
enabledStates.set(ii, isEnabled);
}
mAdapter.notifyDataSetChanged();
}
public int getMenuHeight() {
if (mMenu != null) {
return (int) (mAdapter.getCount() * MENU_ITEM_HEIGHT / Application.getAppResources().getDisplayMetrics().density);
} else {
return -1;
}
}
public void showMenu(final float yPosition, final int horizontalGravity, final int animation) {
final Window window = mMenu.getWindow();
window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
if (horizontalGravity != Gravity.CENTER) {
window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
}
final WindowManager.LayoutParams params = window.getAttributes();
params.gravity = Gravity.TOP | horizontalGravity;
params.y = Math.round(yPosition);
params.windowAnimations = animation;
window.setAttributes(params);
mMenu.show();
}
public void hideMenu() {
mMenu.hide();
}
@Override
public void onItemClick(final AdapterView<?> adapter, final View view, final int position, final long parent) {
mMenuItemListener.onMenuItemClicked(position);
}
}
谢谢! 贾斯汀
Thanks! Justin
推荐答案
因此,基本上,你必须编辑您的code如下(根据一些解决方案已经建议修改): Menuhelper: 公共类MenuHelper实现OnItemClickListener {
So basically, you have to edit your code as follows(modified based on some solutions already suggested): Menuhelper : public class MenuHelper implements OnItemClickListener {
private final Dialog mMenu;
ImageButton button;
private final OnMenuItemClickedListener mMenuItemListener;
private final ArrayAdapter<String> mAdapter;
private final int MENU_ITEM_HEIGHT = 40; // Defined in res/layout/menu_item.xml
private List<Boolean> enabledStates;
public MenuHelper(final Context context, final List<String> menuItems, final OnMenuItemClickedListener menuItemListener) {
this(context, menuItems, menuItemListener, null);
}
public MenuHelper(final Context context, final List<String> menuItems, final OnMenuItemClickedListener menuItemListener, final Dialog.OnDismissListener dismissListener) {
mMenu = new Dialog(context);
mMenu.setOnDismissListener(dismissListener);
mMenu.requestWindowFeature(Window.FEATURE_NO_TITLE);
mMenu.setContentView(R.layout.menu_container);
enabledStates = new ArrayList<Boolean>(menuItems.size());
for(int i = 0; i < menuItems.size(); i++) {
enabledStates.add(true);
}
final ListView menuList = (ListView) mMenu.findViewById(R.id.menu_list);
mAdapter = new ArrayAdapter<String>(context, R.layout.menu_item, menuItems) {
@Override
public boolean isEnabled(int position) {
return enabledStates.get(position);
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
if(enabledStates.get(position)) {
((TextView) view).setTextColor(Application.getAppResources().getColor(R.color.white));
} else {
((TextView) view).setTextColor(Application.getAppResources().getColor(R.color.disabled_gray));
}
if (convertView == null) {
convertView = super.getView(position, convertView, parent);
}
// check for odd or even to set alternate colors to the row background
if (position % 2 == 0) {
convertView.setBackgroundResource(R.drawable.oddcellcolor);
} else {
convertView.setBackgroundResource(R.drawable.evencellcolor);
}
return convertView;
//return view;
}
};
menuList.setOnItemClickListener(this);
menuList.setAdapter(mAdapter);
mMenuItemListener = menuItemListener;
}
public void showMenu(final int yPosition, final int horizontalGravity) {
showMenu(yPosition, horizontalGravity, R.style.MenuDialogAnimation);
}
public void setEnabled(int position, boolean isEnabled) {
enabledStates.set(position, isEnabled);
mAdapter.notifyDataSetChanged();
}
public void setEnabledAll(boolean isEnabled) {
for(int ii = 0; ii < enabledStates.size(); ii++) {
enabledStates.set(ii, isEnabled);
}
mAdapter.notifyDataSetChanged();
}
public int getMenuHeight() {
if (mMenu != null) {
return (int) (mAdapter.getCount() * MENU_ITEM_HEIGHT / Application.getAppResources().getDisplayMetrics().density);
} else {
return -1;
}
}
public void showMenu(final float yPosition, final int horizontalGravity, final int animation) {
final Window window = mMenu.getWindow();
window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
if (horizontalGravity != Gravity.CENTER) {
window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
}
final WindowManager.LayoutParams params = window.getAttributes();
params.gravity = Gravity.TOP | horizontalGravity;
params.y = Math.round(yPosition);
params.windowAnimations = animation;
window.setAttributes(params);
mMenu.show();
}
public void hideMenu() {
mMenu.hide();
}
@Override
public void onItemClick(final AdapterView<?> adapter, final View view, final int position, final long parent) {
mMenuItemListener.onMenuItemClicked(position);
}
} 这需要你的菜单帮手照顾,接下来你的另一主类: 导入这些2:
} that takes care of your menu helper, next your other main class: import these 2 :
import android.content.DialogInterface;
import android.app.Dialog;
改变你的工具扩展: OnItemLongClickListener,OnTouchListener,OnItemClickListener,Dialog.OnDismissListener
(注意我加ondismisslistener这里)
此外,添加这个方法:
change your implements extension to : OnItemLongClickListener, OnTouchListener, OnItemClickListener, Dialog.OnDismissListener
(note I added ondismisslistener here)
Also, add this method:
@Override
public void onDismiss(DialogInterface dialog) {
button.setSelected(false);
}
也修改下面两行,如下所示:
also modify the below 2 lines as shown:
mPreferencesMenuHelper = new MenuHelper(getActivity(), mPreferenceMenuItems, this, this);
mDeleteMenuHelper = new MenuHelper(getActivity(), mDeleteMenuItems, this, this);
有关的onclick code和onmenuitemsclick code,你可以遵循维克拉姆提出的code解决方案,而且必须很好地工作。
For the onclick code and onmenuitemsclick code, you can follow the code solution suggested by vikram, and it must work fine.
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