系统自带的Toast有时候不能满足我们的需求，现在提供一个可以快速替代Toast的方案。
项目地址：
源码：
用法：
详情看附件。
项目地址：
源码：
/*
* Copyright 2012 Evgeny Shishkin
*
* 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.
*/
package com.devspark.appmsg.sample;
import java.util.LinkedList;
import java.util.Queue;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
/**
* @author Evgeny Shishkin
*/
class MsgManager extends Handler {
private static final int MESSAGE_DISPLAY = 0xc2007;
private static final int MESSAGE_ADD_VIEW = 0xc20074dd;
private static final int MESSAGE_REMOVE = 0xc2007de1;
private static MsgManager mInstance;
private Queue<AppMsg> msgQueue;
private Animation inAnimation, outAnimation;
private MsgManager() {
msgQueue = new LinkedList<AppMsg>();
}
/**
* @return The currently used instance of the {@link MsgManager}.
*/
static synchronized MsgManager getInstance() {
if (mInstance == null) {
mInstance = new MsgManager();
}
return mInstance;
}
/**
* Inserts a {@link AppMsg} to be displayed.
*
* @param appMsg
*/
void add(AppMsg appMsg) {
msgQueue.add(appMsg);
if (inAnimation == null) {
inAnimation = AnimationUtils.loadAnimation(appMsg.getActivity(),
android.R.anim.fade_in);
}
if (outAnimation == null) {
outAnimation = AnimationUtils.loadAnimation(appMsg.getActivity(),
android.R.anim.fade_out);
}
displayMsg();
}
/**
* Removes all {@link AppMsg} from the queue.
*/
void clearMsg(AppMsg appMsg) {
if(msgQueue.contains(appMsg)){
// Avoid the message from being removed twice.
removeMessages(MESSAGE_REMOVE);
msgQueue.remove(appMsg);
removeMsg(appMsg);
}
}
/**
* Removes all {@link AppMsg} from the queue.
*/
void clearAllMsg() {
if (msgQueue != null) {
msgQueue.clear();
}
removeMessages(MESSAGE_DISPLAY);
removeMessages(MESSAGE_ADD_VIEW);
removeMessages(MESSAGE_REMOVE);
}
/**
* Displays the next {@link AppMsg} within the queue.
*/
private void displayMsg() {
if (msgQueue.isEmpty()) {
return;
}
// First peek whether the AppMsg is being displayed.
final AppMsg appMsg = msgQueue.peek();
// If the activity is null we throw away the AppMsg.
if (appMsg.getActivity() == null) {
msgQueue.poll();
}
final Message msg;
if (!appMsg.isShowing()) {
// Display the AppMsg
msg = obtainMessage(MESSAGE_ADD_VIEW);
msg.obj = appMsg;
sendMessage(msg);
} else {
msg = obtainMessage(MESSAGE_DISPLAY);
sendMessageDelayed(msg, appMsg.getDuration()
+ inAnimation.getDuration() + outAnimation.getDuration());
}
}
/**
* Removes the {@link AppMsg}'s view after it's display duration.
*
* @param appMsg The {@link AppMsg} added to a {@link ViewGroup} and should be removed.s
*/
private void removeMsg(final AppMsg appMsg) {
ViewGroup parent = ((ViewGroup) appMsg.getView().getParent());
if (parent != null) {
outAnimation.setAnimationListener(new OutAnimationListener(appMsg));
appMsg.getView().startAnimation(outAnimation);
// Remove the AppMsg from the queue.
msgQueue.poll();
if (appMsg.isFloating()) {
// Remove the AppMsg from the view's parent.
parent.removeView(appMsg.getView());
} else {
appMsg.getView().setVisibility(View.INVISIBLE);
}
Message msg = obtainMessage(MESSAGE_DISPLAY);
sendMessage(msg);
}
}
private void addMsgToView(AppMsg appMsg) {
View view = appMsg.getView();
if (view.getParent() == null) {
appMsg.getActivity().addContentView(
view,
appMsg.getLayoutParams());
}
view.startAnimation(inAnimation);
if (view.getVisibility() != View.VISIBLE) {
view.setVisibility(View.VISIBLE);
}
final Message msg = obtainMessage(MESSAGE_REMOVE);
msg.obj = appMsg;
sendMessageDelayed(msg, appMsg.getDuration());
}
@Override
public void handleMessage(Message msg) {
final AppMsg appMsg;
switch (msg.what) {
case MESSAGE_DISPLAY:
displayMsg();
break;
case MESSAGE_ADD_VIEW:
appMsg = (AppMsg) msg.obj;
addMsgToView(appMsg);
break;
case MESSAGE_REMOVE:
appMsg = (AppMsg) msg.obj;
removeMsg(appMsg);
break;
default:
super.handleMessage(msg);
break;
}
}
private static class OutAnimationListener implements Animation.AnimationListener {
private AppMsg appMsg;
private OutAnimationListener(AppMsg appMsg) {
this.appMsg = appMsg;
}
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
if (!appMsg.isFloating()) {
appMsg.getView().setVisibility(View.GONE);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
}
}
}
/*
* Copyright 2012 Evgeny Shishkin
*
* 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.
*/
package com.devspark.appmsg.sample;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.FrameLayout;
import android.widget.TextView;
/**
* In-layout notifications. Based on {@link android.widget.Toast} notifications
* and article by Cyril Mottier (http://android.cyrilmottier.com/?p=773).
*
* @author e.shishkin
*/
public class AppMsg {
/**
* Show the view or text notification for a short period of time. This time
* could be user-definable. This is the default.
*
* @see #setDuration
*/
public static final int LENGTH_SHORT = 3000;
/**
* Show the view or text notification for a long period of time. This time
* could be user-definable.
*
* @see #setDuration
*/
public static final int LENGTH_LONG = 5000;
/**
* Show the text notification for a long period of time with a negative style.
*/
public static final Style STYLE_ALERT = new Style(LENGTH_LONG, R.color.alert);
/**
* Show the text notification for a short period of time with a positive style.
*/
public static final Style STYLE_CONFIRM = new Style(LENGTH_SHORT, R.color.confirm);
/**
* Show the text notification for a short period of time with a neutral style.
*/
public static final Style STYLE_INFO = new Style(LENGTH_SHORT, R.color.info);
private final Activity mContext;
private int mDuration = LENGTH_SHORT;
private View mView;
private LayoutParams mLayoutParams;
private boolean mFloating;
/**
* Construct an empty AppMsg object. You must call {@link #setView} before
* you can call {@link #show}.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
*/
public AppMsg(Activity context) {
mContext = context;
}
/**
* Make a {@link AppMsg} that just contains a text view.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
*/
public static AppMsg makeText(Activity context, CharSequence text, Style style) {
return makeText(context, text, style, R.layout.app_msg);
}
/**
* @author mengguoqiang 扩展支持设置字体大小
* Make a {@link AppMsg} that just contains a text view.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
*/
public static AppMsg makeText(Activity context, CharSequence text, Style style, float textSize) {
return makeText(context, text, style, R.layout.app_msg, textSize);
}
/**
* Make a {@link AppMsg} with a custom layout. The layout must have a {@link TextView} com id {@link android.R.id.message}
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
*/
public static AppMsg makeText(Activity context, CharSequence text, Style style, int layoutId) {
LayoutInflater inflate = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflate.inflate(layoutId, null);
return makeText(context, text, style, v, true);
}
/**
* @author mengguoqiang 扩展支持字体大小
* Make a {@link AppMsg} with a custom layout. The layout must have a {@link TextView} com id {@link android.R.id.message}
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
*/
public static AppMsg makeText(Activity context, CharSequence text, Style style, int layoutId, float textSize) {
LayoutInflater inflate = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflate.inflate(layoutId, null);
return makeText(context, text, style, v, true, textSize);
}
/**
* Make a non-floating {@link AppMsg} with a custom view presented inside the layout.
* It can be used to create non-floating notifications if floating is false.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param customView
* View to be used.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
*/
public static AppMsg makeText(Activity context, CharSequence text, Style style, View customView) {
return makeText(context, text, style, customView, false);
}
/**
* Make a {@link AppMsg} with a custom view. It can be used to create non-floating notifications if floating is false.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param view
* View to be used.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
* @param floating true if it'll float.
*/
private static AppMsg makeText(Activity context, CharSequence text, Style style, View view, boolean floating) {
return makeText(context, text, style, view, floating, 0);
}
/**
*
* @author mengguoqiang 扩展支持设置字体大小
* Make a {@link AppMsg} with a custom view. It can be used to create non-floating notifications if floating is false.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param view
* View to be used.
* @param text The text to show. Can be formatted text.
* @param style The style with a background and a duration.
* @param floating true if it'll float.
*/
private static AppMsg makeText(Activity context, CharSequence text, Style style, View view, boolean floating, float textSize) {
AppMsg result = new AppMsg(context);
view.setBackgroundResource(style.background);
TextView tv = (TextView) view.findViewById(android.R.id.message);
if(textSize > 0) tv.setTextSize(textSize);
tv.setText(text);
result.mView = view;
result.mDuration = style.duration;
result.mFloating = floating;
return result;
}
/**
* Make a {@link AppMsg} with a custom view. It can be used to create non-floating notifications if floating is false.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param resId The resource id of the string resource to use. Can be
* formatted text.
* @param style The style with a background and a duration.
* @param floating true if it'll float.
*/
public static AppMsg makeText(Activity context, int resId, Style style, View customView, boolean floating) {
return makeText(context, context.getResources().getText(resId), style, customView, floating);
}
/**
* Make a {@link AppMsg} that just contains a text view with the text from a
* resource.
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param resId The resource id of the string resource to use. Can be
* formatted text.
* @param style The style with a background and a duration.
* @throws Resources.NotFoundException if the resource can't be found.
*/
public static AppMsg makeText(Activity context, int resId, Style style)
throws Resources.NotFoundException {
return makeText(context, context.getResources().getText(resId), style);
}
/**
* Make a {@link AppMsg} with a custom layout using the text from a
* resource. The layout must have a {@link TextView} com id {@link android.R.id.message}
*
* @param context The context to use. Usually your
* {@link android.app.Activity} object.
* @param resId The resource id of the string resource to use. Can be
* formatted text.
* @param style The style with a background and a duration.
* @throws Resources.NotFoundException if the resource can't be found.
*/
public static AppMsg makeText(Activity context, int resId, Style style, int layoutId)
throws Resources.NotFoundException {
return makeText(context, context.getResources().getText(resId), style, layoutId);
}
/**
* Show the view for the specified duration.
*/
public void show() {
MsgManager manager = MsgManager.getInstance();
manager.add(this);
}
/**
* @return <code>true</code> if the {@link AppMsg} is being displayed, else <code>false</code>.
*/
public boolean isShowing() {
if (mFloating) {
return mView != null && mView.getParent() != null;
} else {
return mView.getVisibility() == View.VISIBLE;
}
}
/**
* Close the view if it's showing, or don't show it if it isn't showing yet.
* You do not normally have to call this. Normally view will disappear on its own
* after the appropriate duration.
*/
public void cancel() {
MsgManager.getInstance().clearMsg(this);
}
/**
* Cancels all queued {@link AppMsg}s. If there is a {@link AppMsg}
* displayed currently, it will be the last one displayed.
*/
public static void cancelAll() {
MsgManager.getInstance().clearAllMsg();
}
/**
* Return the activity.
*/
public Activity getActivity() {
return mContext;
}
/**
* Set the view to show.
*
* @see #getView
*/
public void setView(View view) {
mView = view;
}
/**
* Return the view.
*
* @see #setView
*/
public View getView() {
return mView;
}
/**
* Set how long to show the view for.
*
* @see #LENGTH_SHORT
* @see #LENGTH_LONG
*/
public void setDuration(int duration) {
mDuration = duration;
}
/**
* Return the duration.
*
* @see #setDuration
*/
public int getDuration() {
return mDuration;
}
/**
* Update the text in a AppMsg that was previously created using one of the makeText() methods.
*
* @param resId The new text for the AppMsg.
*/
public void setText(int resId) {
setText(mContext.getText(resId));
}
/**
* Update the text in a AppMsg that was previously created using one of the makeText() methods.
*
* @param s The new text for the AppMsg.
*/
public void setText(CharSequence s) {
if (mView == null) {
throw new RuntimeException("This AppMsg was not created with AppMsg.makeText()");
}
TextView tv = (TextView) mView.findViewById(android.R.id.message);
if (tv == null) {
throw new RuntimeException("This AppMsg was not created with AppMsg.makeText()");
}
tv.setText(s);
}
/**
* Gets the crouton's layout parameters, constructing a default if necessary.
*
* @return the layout parameters
*/
public LayoutParams getLayoutParams() {
if (mLayoutParams == null) {
mLayoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
}
return mLayoutParams;
}
/**
* Sets the layout parameters which will be used to display the crouton.
*
* @param layoutParams The layout parameters to use.
* @return <code>this</code>, for chaining.
*/
public AppMsg setLayoutParams(LayoutParams layoutParams) {
mLayoutParams = layoutParams;
return this;
}
/**
* Constructs and sets the layout parameters to have some gravity.
*
* @param gravity the gravity of the Crouton
* @return <code>this</code>, for chaining.
* @see android.view.Gravity
*/
public AppMsg setLayoutGravity(int gravity) {
mLayoutParams = new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, gravity);
return this;
}
/**
* Return the value of floating.
*
* @see #setFloating(boolean)
*/
public boolean isFloating() {
return mFloating;
}
/**
* Sets the value of floating.
*
* @param mFloating
*/
public void setFloating(boolean mFloating) {
this.mFloating = mFloating;
}
/**
* The style for a {@link AppMsg}.
*
* @author e.shishkin
*/
public static class Style {
private final int duration;
private final int background;
/**
* Construct an {@link AppMsg.Style} object.
*
* @param duration How long to display the message. Either
* {@link #LENGTH_SHORT} or {@link #LENGTH_LONG}
* @param resId resource for AppMsg background
*/
public Style(int duration, int resId) {
this.duration = duration;
this.background = resId;
}
/**
* Return the duration in milliseconds.
*/
public int getDuration() {
return duration;
}
/**
* Return the resource id of background.
*/
public int getBackground() {
return background;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof AppMsg.Style)) {
return false;
}
Style style = (Style) o;
return style.duration == duration
&& style.background == background;
}
}
}
用法：
/*
* Copyright 2012 Evgeny Shishkin
*
* 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.
*/
package com.devspark.appmsg.sample;
import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
/**
* Sample of AppMsg library.
*
* @author Evgeny Shishkin
* SherlockActivity
*/
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/**
* Button onClick listener.
*
* @param v
*/
public void showAppMsg(View v) {
final CharSequence msg = ((Button) v).getText();
final AppMsg.Style style;
switch (v.getId()) {
case R.id.alert:
style = AppMsg.STYLE_ALERT;
break;
case R.id.confirm:
style = AppMsg.STYLE_CONFIRM;
break;
case R.id.info:
style = AppMsg.STYLE_INFO;
break;
case R.id.custom:
style = new AppMsg.Style(AppMsg.LENGTH_SHORT, R.color.custom);
break;
default:
return;
}
// create {@link AppMsg} with specify type
AppMsg appMsg = AppMsg.makeText(this, msg, style);
if (((CheckBox) (findViewById(R.id.bottom))).isChecked()) {
appMsg.setLayoutGravity(Gravity.BOTTOM);
}
appMsg.show();
}
}
详情看附件。
