屏蔽Dialog与其子类 Home键（4.0以下）
2012-11-29 12:57
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在Dialog 方法show（）之后再调用dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);方法能实现禁止Home键。
改写后的AlertDialog：
改写后的AlertDialog：
package android.mis.securitymanager.camera;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.drawable.Drawable;
import android.mis.securitymanager.R;
import android.view.KeyEvent;
import android.view.View;
import android.view.WindowManager.LayoutParams;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
public class MAlertDialog extends AlertDialog{
protected MAlertDialog(Context context) {
super(context);
}
@Override
public void onAttachedToWindow() {
getWindow().setType(LayoutParams.TYPE_KEYGUARD_DIALOG);
super.onAttachedToWindow();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == KeyEvent.KEYCODE_HOME)
return true;
return super.onKeyDown(keyCode, event);
}
public static class Builder {
private Parameter p;
/**
* Constructor using a context for this builder and the {@link AlertDialog} it creates.
*/
public Builder(Context context) {
p = new Parameter();
p.context = context;
}
/**
* Set the title using the given resource id.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setTitle(int titleId) {
p.title = p.context.getString(titleId);
return this;
}
/**
* Set the title displayed in the {@link Dialog}.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setTitle(CharSequence title) {
p.title = title;
return this;
}
/**
* Set the message to display using the given resource id.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setMessage(int messageId) {
p.message = p.context.getString(messageId);
return this;
}
/**
* Set the message to display.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setMessage(CharSequence message) {
p.message = message+"";
return this;
}
/**
* Set the resource id of the {@link Drawable} to be used in the title.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setIcon(int iconId) {
p.icon = p.context.getResources().getDrawable(iconId);
return this;
}
/**
* Set the {@link Drawable} to be used in the title.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setIcon(Drawable icon) {
p.icon = icon;
return this;
}
/**
* Set a listener to be invoked when the positive button of the dialog is pressed.
* @param textId The resource id of the text to display in the positive button
* @param listener The {@link DialogInterface.OnClickListener} to use.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setPositiveButton(int textId, final OnClickListener listener) {
p.positiveText = p.context.getString(textId);
p.pListener = listener;
return this;
}
/**
* Set a listener to be invoked when the positive button of the dialog is pressed.
* @param text The text to display in the positive button
* @param listener The {@link DialogInterface.OnClickListener} to use.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setPositiveButton(CharSequence text, final OnClickListener listener) {
p.positiveText = text+"";
p.pListener = listener;
return this;
}
/**
* Set a listener to be invoked when the negative button of the dialog is pressed.
* @param textId The resource id of the text to display in the negative button
* @param listener The {@link DialogInterface.OnClickListener} to use.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setNegativeButton(int textId, final OnClickListener listener) {
p.negativiText = p.context.getString(textId);
p.nListener = listener;
return this;
}
/**
* Set a listener to be invoked when the negative button of the dialog is pressed.
* @param text The text to display in the negative button
* @param listener The {@link DialogInterface.OnClickListener} to use.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setNegativeButton(CharSequence text, final OnClickListener listener) {
p.negativiText = text+"";
p.nListener = listener;
return this;
}
/**
* Set a listener to be invoked when the neutral button of the dialog is pressed.
* @param textId The resource id of the text to display in the neutral button
* @param listener The {@link DialogInterface.OnClickListener} to use.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
// public Builder setNeutralButton(int textId, final OnClickListener listener) {
// P.mNeutralButtonText = P.mContext.getText(textId);
// P.mNeutralButtonListener = listener;
// return this;
// }
//
// /**
// * Set a listener to be invoked when the neutral button of the dialog is pressed.
// * @param text The text to display in the neutral button
// * @param listener The {@link DialogInterface.OnClickListener} to use.
// *
// * @return This Builder object to allow for chaining of calls to set methods
// */
// public Builder setNeutralButton(CharSequence text, final OnClickListener listener) {
// P.mNeutralButtonText = text;
// P.mNeutralButtonListener = listener;
// return this;
// }
/**
* Sets whether the dialog is cancelable or not default is true.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setCancelable(boolean cancelable) {
p.mCancelable = cancelable;
return this;
}
/**
* Sets the callback that will be called if the dialog is canceled.
* @see #setCancelable(boolean)
*
* @return This Builder object to allow for chaining of calls to set methods
*/
// public Builder setOnCancelListener(OnCancelListener onCancelListener) {
// md.setOnCancelListener(onCancelListener);
// return this;
// }
//
/**
* Sets the callback that will be called if a key is dispatched to the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setOnKeyListener(OnKeyListener onKeyListener) {
md.setOnKeyListener(onKeyListener);
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content, you will be notified of the
* selected item via the supplied listener. This should be an array type i.e. R.array.foo
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setItems(int itemsId, final OnClickListener listener) {
P.mItems = P.mContext.getResources().getTextArray(itemsId);
P.mOnClickListener = listener;
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content, you will be notified of the
* selected item via the supplied listener.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setItems(String[] items, final OnClickListener listener) {
p.mItems = items;
p.mOnClickListener = listener;
p.mIsItemChoice = true;
return this;
}
/**
* Set a list of items, which are supplied by the given {@link ListAdapter}, to be
* displayed in the dialog as the content, you will be notified of the
* selected item via the supplied listener.
*
* @param adapter The {@link ListAdapter} to supply the list of items
* @param listener The listener that will be called when an item is clicked.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setAdapter(final ListAdapter adapter, final OnClickListener listener) {
P.mAdapter = adapter;
P.mOnClickListener = listener;
return this;
}*/
/**
* Set a list of items, which are supplied by the given {@link Cursor}, to be
* displayed in the dialog as the content, you will be notified of the
* selected item via the supplied listener.
*
* @param cursor The {@link Cursor} to supply the list of items
* @param listener The listener that will be called when an item is clicked.
* @param labelColumn The column name on the cursor containing the string to display
* in the label.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setCursor(final Cursor cursor, final OnClickListener listener,
String labelColumn) {
P.mCursor = cursor;
P.mLabelColumn = labelColumn;
P.mOnClickListener = listener;
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content,
* you will be notified of the selected item via the supplied listener.
* This should be an array type, e.g. R.array.foo. The list will have
* a check mark displayed to the right of the text for each checked
* item. Clicking on an item in the list will not dismiss the dialog.
* Clicking on a button will dismiss the dialog.
*
* @param itemsId the resource id of an array i.e. R.array.foo
* @param checkedItems specifies which items are checked. It should be null in which case no
* items are checked. If non null it must be exactly the same length as the array of
* items.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setMultiChoiceItems(int itemsId, boolean[] checkedItems,
final OnMultiChoiceClickListener listener) {
P.mItems = P.mContext.getResources().getTextArray(itemsId);
P.mOnCheckboxClickListener = listener;
P.mCheckedItems = checkedItems;
P.mIsMultiChoice = true;
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content,
* you will be notified of the selected item via the supplied listener.
* The list will have a check mark displayed to the right of the text
* for each checked item. Clicking on an item in the list will not
* dismiss the dialog. Clicking on a button will dismiss the dialog.
*
* @param items the text of the items to be displayed in the list.
* @param checkedItems specifies which items are checked. It should be null in which case no
* items are checked. If non null it must be exactly the same length as the array of
* items.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
public Builder setMultiChoiceItems(String[] items, boolean[] checkedItems,
final OnMultiChoiceClickListener listener) {
p.mItems = items;
p.multiChoiceListener = listener;
p.mCheckedItems = checkedItems;
p.mIsMultiChoice = true;
return this;
}
/**
* Set a list of items to be displayed in the dialog as the content,
* you will be notified of the selected item via the supplied listener.
* The list will have a check mark displayed to the right of the text
* for each checked item. Clicking on an item in the list will not
* dismiss the dialog. Clicking on a button will dismiss the dialog.
*
* @param cursor the cursor used to provide the items.
* @param isCheckedColumn specifies the column name on the cursor to use to determine
* whether a checkbox is checked or not. It must return an integer value where 1
* means checked and 0 means unchecked.
* @param labelColumn The column name on the cursor containing the string to display in the
* label.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setMultiChoiceItems(Cursor cursor, String isCheckedColumn, String labelColumn,
final OnMultiChoiceClickListener listener) {
P.mCursor = cursor;
P.mOnCheckboxClickListener = listener;
P.mIsCheckedColumn = isCheckedColumn;
P.mLabelColumn = labelColumn;
P.mIsMultiChoice = true;
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content, you will be notified of
* the selected item via the supplied listener. This should be an array type i.e.
* R.array.foo The list will have a check mark displayed to the right of the text for the
* checked item. Clicking on an item in the list will not dismiss the dialog. Clicking on a
* button will dismiss the dialog.
*
* @param itemsId the resource id of an array i.e. R.array.foo
* @param checkedItem specifies which item is checked. If -1 no items are checked.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setSingleChoiceItems(int itemsId, int checkedItem,
final OnClickListener listener) {
P.mItems = P.mContext.getResources().getTextArray(itemsId);
P.mOnClickListener = listener;
P.mCheckedItem = checkedItem;
P.mIsSingleChoice = true;
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content, you will be notified of
* the selected item via the supplied listener. The list will have a check mark displayed to
* the right of the text for the checked item. Clicking on an item in the list will not
* dismiss the dialog. Clicking on a button will dismiss the dialog.
*
* @param cursor the cursor to retrieve the items from.
* @param checkedItem specifies which item is checked. If -1 no items are checked.
* @param labelColumn The column name on the cursor containing the string to display in the
* label.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setSingleChoiceItems(Cursor cursor, int checkedItem, String labelColumn,
final OnClickListener listener) {
P.mCursor = cursor;
P.mOnClickListener = listener;
P.mCheckedItem = checkedItem;
P.mLabelColumn = labelColumn;
P.mIsSingleChoice = true;
return this;
}*/
/**
* Set a list of items to be displayed in the dialog as the content, you will be notified of
* the selected item via the supplied listener. The list will have a check mark displayed to
* the right of the text for the checked item. Clicking on an item in the list will not
* dismiss the dialog. Clicking on a button will dismiss the dialog.
*
* @param items the items to be displayed.
* @param checkedItem specifies which item is checked. If -1 no items are checked.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setSingleChoiceItems(CharSequence[] items, int checkedItem, final OnClickListener listener) {
P.mItems = items;
P.mOnClickListener = listener;
P.mCheckedItem = checkedItem;
P.mIsSingleChoice = true;
return this;
} */
/**
* Set a list of items to be displayed in the dialog as the content, you will be notified of
* the selected item via the supplied listener. The list will have a check mark displayed to
* the right of the text for the checked item. Clicking on an item in the list will not
* dismiss the dialog. Clicking on a button will dismiss the dialog.
*
* @param adapter The {@link ListAdapter} to supply the list of items
* @param checkedItem specifies which item is checked. If -1 no items are checked.
* @param listener notified when an item on the list is clicked. The dialog will not be
* dismissed when an item is clicked. It will only be dismissed if clicked on a
* button, if no buttons are supplied it's up to the user to dismiss the dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setSingleChoiceItems(ListAdapter adapter, int checkedItem, final OnClickListener listener) {
P.mAdapter = adapter;
P.mOnClickListener = listener;
P.mCheckedItem = checkedItem;
P.mIsSingleChoice = true;
return this;
}*/
/**
* Sets a listener to be invoked when an item in the list is selected.
*
* @param listener The listener to be invoked.
* @see AdapterView#setOnItemSelectedListener(android.widget.AdapterView.OnItemSelectedListener)
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setOnItemSelectedListener(final AdapterView.OnItemSelectedListener listener) {
P.mOnItemSelectedListener = listener;
return this;
}*/
/**
* Set a custom view to be the contents of the Dialog. If the supplied view is an instance
* of a {@link ListView} the light background will be used.
*
* @param view The view to use as the contents of the Dialog.
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setView(View view) {
md.setView(view);
return this;
}*/
/**
* Set a custom view to be the contents of the Dialog, specifying the
* spacing to appear around that view. If the supplied view is an
* instance of a {@link ListView} the light background will be used.
*
* @param view The view to use as the contents of the Dialog.
* @param viewSpacingLeft Spacing between the left edge of the view and
* the dialog frame
* @param viewSpacingTop Spacing between the top edge of the view and
* the dialog frame
* @param viewSpacingRight Spacing between the right edge of the view
* and the dialog frame
* @param viewSpacingBottom Spacing between the bottom edge of the view
* and the dialog frame
* @return This Builder object to allow for chaining of calls to set
* methods
*
*
* This is currently hidden because it seems like people should just
* be able to put padding around the view.
* @hide
*/
/* public Builder setView(View view, int viewSpacingLeft, int viewSpacingTop,
int viewSpacingRight, int viewSpacingBottom) {
P.mView = view;
P.mViewSpacingSpecified = true;
P.mViewSpacingLeft = viewSpacingLeft;
P.mViewSpacingTop = viewSpacingTop;
P.mViewSpacingRight = viewSpacingRight;
P.mViewSpacingBottom = viewSpacingBottom;
return this;
}*/
/**
* Sets the Dialog to use the inverse background, regardless of what the
* contents is.
*
* @param useInverseBackground Whether to use the inverse background
*
* @return This Builder object to allow for chaining of calls to set methods
*/
/* public Builder setInverseBackgroundForced(boolean useInverseBackground) {
P.mForceInverseBackground = useInverseBackground;
return this;
}*/
/**
* @hide
*/
/* public Builder setRecycleOnMeasureEnabled(boolean enabled) {
P.mRecycleOnMeasure = enabled;
return this;
}*/
/**
* Creates a {@link AlertDialog} with the arguments supplied to this builder. It does not
* {@link Dialog#show()} the dialog. This allows the user to do any extra processing
* before displaying the dialog. Use {@link #show()} if you don't have any other processing
* to do and want this to be created and displayed.
*/
public MAlertDialog create() {
final MAlertDialog dialog = new MAlertDialog(p.context);
p.apply(dialog);
dialog.setCancelable(p.mCancelable);
return dialog;
}
/**
* Creates a {@link AlertDialog} with the arguments supplied to this builder and
* {@link Dialog#show()}'s the dialog.
*/
public AlertDialog show() {
MAlertDialog dialog = create();
dialog.show();
return dialog;
}
}
static class Parameter {
public OnMultiChoiceClickListener multiChoiceListener;
CharSequence title;
String[] mItems;
boolean[] mCheckedItems;
boolean mIsMultiChoice;
boolean mIsItemChoice;
String positiveText;
String negativiText;
String message;
Context context;
Drawable icon;
Dialog.OnClickListener mOnClickListener;
Dialog.OnClickListener pListener;
Dialog.OnClickListener nListener;
boolean mCancelable = true;
public void apply(final MAlertDialog sd) {
if (title != null)
sd.setTitle(title);
if(icon!=null)
sd.setIcon(icon);
if (mIsMultiChoice) {
ListView lv = new ListView(context);;
ArrayAdapter<String> aa = new ArrayAdapter<String>(context,
android.R.layout.simple_list_item_multiple_choice, mItems);
lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
sd.setView(lv);
lv.setAdapter(aa);
if(multiChoiceListener != null)
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
sd.dismiss();
CheckedTextView text = (CheckedTextView) view
.findViewById(android.R.id.text1);
if (text.isChecked() == false)
multiChoiceListener.onClick(sd, position, true);
else
multiChoiceListener.onClick(sd, position, false);
}
});
if (mCheckedItems != null) {
int len = mItems.length > mCheckedItems.length ? mCheckedItems.length
: mItems.length;
for (int i = 0; i < len; i++)
lv.setItemChecked(i, mCheckedItems[i]);
}
}else if(mIsItemChoice){
ListView lv = new ListView(context);;
ArrayAdapter<String> aa = new ArrayAdapter<String>(context,
R.layout.simple_list_item_1, mItems);
sd.setView(lv);
lv.setAdapter(aa);
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
sd.dismiss();
if(mOnClickListener != null)
mOnClickListener.onClick(sd, position);
}
});
}else if(message!=null)
sd.setMessage(message);
if(positiveText != null)
sd.setButton(AlertDialog.BUTTON_POSITIVE, positiveText, pListener);
if(negativiText != null)
sd.setButton(AlertDialog.BUTTON_NEGATIVE, negativiText, nListener);
}
}
}
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