<b>Toast, </b><b>Snackbar, </b><b>提示</b>
源码及所在DEMO已上传至<b>GitHub:</b><b>SweetTips</b>,欢迎大家提Bug,喜欢的话记得Star或Fork下哈!
1.为什么要写这个库?
上面的问题也可以这样问:有哪些常见的需求,Android原生Toast及Design包中的Snackbar实现起来相对繁琐?
<b>Toast:</b>
- 原生Toast无法/不方便自定义显示时间;
- 原生Toast,需要等待队列中前面的Toast实例显示完毕之后才可以显示,实时性差;
- 原生Toast,想在正在显示的Toast实例上显示新的内容并设置新内容的显示时间,实现较繁琐;
- 原生Toast,无法/不方便自定义动画;
- Android系统版本过多,不同的厂商对系统的定制也很不同,同一段代码在不同的机器上,Toast的样式差异很大,不利于App的一致性体验;
<b>Snackbar:</b>
- Design包中的Snackbar,无法自定义动画;
2.SweetTips有什么用?
很显然,可以解决上面列举的那些很常见的小问题;
<b>截图:</b>
SweetToast及SweetSnackbar效果录屏.gif
3.SweetTips的结构?
自定义Toast:SweetToast
<b>+</b>
自定义Snackbar:SweetSnackbar
<b>+</b>
SnackbarUtils:SweetSnackbar的工具类
4.SweetTips的实现思路
<b>SweetToast:</b>
- 在SweetToastManager中,利用队列实现对SweetToast实例的管理,直接调用SweetToast的show()方法,可以实现和原生Toast几乎一致的体验;
- 在SweetToastManager中,通过对队列的清空,实现即时显示当前SweetToast实例的内容;
- 在SweetToast中,通过设置WindowManager.LayoutParams.windowAnimations,实现SweetToast实例自定义的出入场动画;
- SweetToast支持链式调用,调用尽可能的快捷;
<b>SweetSnackbar:</b>
- 几乎完全拷贝了Design包中的Snackbar,只是添加了一个设置自定义出入场动画的方法:setAnimations
- 参照之前写过的一个工具类<b>GitHub:</b><b>SnackbarUtils</b>,为SweetSnackbar也写了一个工具类,同样支持练市调用,实现'一行代码设置多重属性';
<b>SweetTips.java</b>
- 这个工具类待完善,是为了通过SweetToast或SweetSnackbar,封装一些比较常用且精美的效果,通过静态方法直接调用,提升开发者一些效率.
另外,为了这个提示库,也花了不少时间收集了一些常用的颜色,保存在Constant.java中,可作为一个通用的工具类适用于不同项目,喜欢的同学尽管拿走.
5.SweetTips的使用限制
SweetToast是通过WindowManager向屏幕添加View来展示提示信息:
params.type = WindowManager.LayoutParams.TYPE_TOAST;
在Manifest.xml中已经声明过权限:
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
在SDK>=23(Android 6)的系统中,用户需要手动允许当前App使用这个权限,才可以正常显示!
6.SweetTips部分代码
/**
* 自定义Toast
*
* 作者:幻海流心
* GitHub:https://github.com/HuanHaiLiuXin
* 邮箱:wall0920@163.com
* 2016/12/13
*/
public final class SweetToast {
public static final int LENGTH_SHORT = 0;
public static final int LENGTH_LONG = 1;
public static final long SHORT_DELAY = 2000; // 2 seconds
public static final long LONG_DELAY = 3500; // 3.5 seconds
//SweetToast默认背景色
private static int mBackgroundColor = 0XE8484848;
//
private View mContentView = null; //内容区域View
private SweetToastConfiguration mConfiguration = null;
private WindowManager mWindowManager = null;
private boolean showing = false; //是否在展示中
private boolean showEnabled = true; //是否允许展示
private boolean hideEnabled = true; //是否允许移除
private boolean stateChangeEnabled = true; //是否允许改变展示状态
public static SweetToast makeText(Context context, CharSequence text){
return makeText(context, text, LENGTH_SHORT);
}
public static SweetToast makeText(View mContentView){
return makeText(mContentView, LENGTH_SHORT);
}
public static SweetToast makeText(Context context, CharSequence text, int duration) {
try {
LayoutInflater inflate = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflate.inflate(R.layout.transient_notification, null);
TextView tv = (TextView)v.findViewById(R.id.message);
tv.setText(text);
SweetToast sweetToast = new SweetToast();
sweetToast.mContentView = v;
sweetToast.mContentView.setBackgroundDrawable(getBackgroundDrawable(sweetToast, mBackgroundColor));
initConfiguration(sweetToast,duration);
return sweetToast;
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":69");
}
return null;
}
public static SweetToast makeText(View mContentView, int duration){
SweetToast sweetToast = new SweetToast();
sweetToast.mContentView = mContentView;
initConfiguration(sweetToast,duration);
return sweetToast;
}
private static void initConfiguration(SweetToast sweetToast,int duration){
try {
if(duration < 0){
throw new RuntimeException("显示时长必须>=0!");
}
//1:初始化mWindowManager
sweetToast.mWindowManager = (WindowManager) sweetToast.getContentView().getContext().getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
//2:初始化mConfiguration
SweetToastConfiguration mConfiguration = new SweetToastConfiguration();
//2.1:设置显示时间
mConfiguration.setDuration(duration);
//2.2:设置WindowManager.LayoutParams属性
WindowManager.LayoutParams params = new WindowManager.LayoutParams();
final Configuration config = sweetToast.getContentView().getContext().getResources().getConfiguration();
final int gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
params.gravity = gravity;
if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.FILL_HORIZONTAL) {
params.horizontalWeight = 1.0f;
}
if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.FILL_VERTICAL) {
params.verticalWeight = 1.0f;
}
params.x = 0;
params.y = sweetToast.getContentView().getContext().getResources().getDimensionPixelSize(R.dimen.toast_y_offset);
params.verticalMargin = 0.0f;
params.horizontalMargin = 0.0f;
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.format = PixelFormat.TRANSLUCENT;
params.windowAnimations = R.style.Anim_SweetToast;
//在小米5S上实验,前两种type均会报错
params.type = WindowManager.LayoutParams.TYPE_TOAST;
// params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
// params.type = WindowManager.LayoutParams.TYPE_PHONE;
params.setTitle("Toast");
params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
mConfiguration.setParams(params);
sweetToast.setConfiguration(mConfiguration);
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":120");
}
}
/**
* 根据指定的背景色,获得mToastView的背景drawable实例
* @param backgroundColor
* @return
*/
private static ShapeDrawable getBackgroundDrawable(SweetToast sweetToast, @ColorInt int backgroundColor){
try {
ShapeDrawable shapeDrawable = new ShapeDrawable();
DrawableCompat.setTint(shapeDrawable,backgroundColor);
//获取当前设备的屏幕尺寸
//实验发现不同的设备上面,Toast内容区域的padding值并不相同,根据屏幕的宽度分别进行处理,尽量接近设备原生Toast的体验
int widthPixels = sweetToast.getContentView().getResources().getDisplayMetrics().widthPixels;
int heightPixels = sweetToast.getContentView().getResources().getDisplayMetrics().heightPixels;
float density = sweetToast.getContentView().getResources().getDisplayMetrics().density;
if(widthPixels >= 1070){
//例如小米5S:1920 x 1080
shapeDrawable.setPadding((int)(density*13),(int)(density*12),(int)(density*13),(int)(density*12));
}else {
//例如红米2:1280x720
shapeDrawable.setPadding((int)(density*14),(int)(density*13),(int)(density*14),(int)(density*13));
}
float radius = density*8;
float[] outerRadii = new float[]{radius,radius,radius,radius,radius,radius,radius,radius};
int width = sweetToast.getContentView().getWidth();
int height = sweetToast.getContentView().getHeight();
RectF rectF = new RectF(1,1,width-1,height-1);
RoundRectShape roundRectShape = new RoundRectShape(outerRadii,rectF,null);
shapeDrawable.setShape(roundRectShape);
DrawableCompat.setTint(shapeDrawable,backgroundColor);
return shapeDrawable;
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":154");
}
return null;
}
/**
* 自定义SweetToast实例的入场出场动画
* @param windowAnimations
* @return
*/
public SweetToast setWindowAnimations(@StyleRes int windowAnimations){
mConfiguration.getParams().windowAnimations = windowAnimations;
return this;
}
public SweetToast setGravity(int gravity, int xOffset, int yOffset) {
mConfiguration.getParams().gravity = gravity;
mConfiguration.getParams().x = xOffset;
mConfiguration.getParams().y = yOffset;
return this;
}
public SweetToast setMargin(float horizontalMargin, float verticalMargin) {
mConfiguration.getParams().horizontalMargin = horizontalMargin;
mConfiguration.getParams().verticalMargin = verticalMargin;
return this;
}
/**
* 向mContentView中添加View
*
* @param view
* @param index
* @return
*/
public SweetToast addView(View view, int index) {
if(mContentView != null && mContentView instanceof ViewGroup){
((ViewGroup)mContentView).addView(view,index);
}
return this;
}
/**
* 设置SweetToast实例中TextView的文字颜色
*
* @param messageColor
* @return
*/
public SweetToast messageColor(@ColorInt int messageColor){
if(mContentView !=null && mContentView.findViewById(R.id.message) != null && mContentView.findViewById(R.id.message) instanceof TextView){
TextView textView = ((TextView) mContentView.findViewById(R.id.message));
textView.setTextColor(messageColor);
}
return this;
}
/**
* 设置SweetToast实例的背景颜色
*
* @param backgroundColor
* @return
*/
public SweetToast backgroundColor(@ColorInt int backgroundColor){
if(mContentView!=null){
mContentView.setBackgroundDrawable(getBackgroundDrawable(this, backgroundColor));
}
return this;
}
/**
* 设置SweetToast实例的背景资源
*
* @param background
* @return
*/
public SweetToast backgroundResource(@DrawableRes int background){
if(mContentView!=null){
mContentView.setBackgroundResource(background);
}
return this;
}
/**
* 设置SweetToast实例的文字颜色及背景颜色
*
* @param messageColor
* @param backgroundColor
* @return
*/
public SweetToast colors(@ColorInt int messageColor, @ColorInt int backgroundColor) {
messageColor(messageColor);
backgroundColor(backgroundColor);
return this;
}
/**
* 设置SweetToast实例的文字颜色及背景资源
*
* @param messageColor
* @param background
* @return
*/
public SweetToast textColorAndBackground(@ColorInt int messageColor, @DrawableRes int background) {
messageColor(messageColor);
backgroundResource(background);
return this;
}
/**
* 设置SweetToast实例的宽高
* 很有用的功能,参考了简书上的文章:http://www.jianshu.com/p/491b17281c0a
* @param width SweetToast实例的宽度,单位是pix
* @param height SweetToast实例的高度,单位是pix
* @return
*/
public SweetToast size(int width, int height){
if(mContentView!=null && mContentView instanceof LinearLayout){
mContentView.setMinimumWidth(width);
mContentView.setMinimumHeight(height);
((LinearLayout)mContentView).setGravity(Gravity.CENTER);
try {
TextView textView = ((TextView) mContentView.findViewById(R.id.message));
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) textView.getLayoutParams();
params.width = LinearLayout.LayoutParams.MATCH_PARENT;
params.height = LinearLayout.LayoutParams.MATCH_PARENT;
textView.setLayoutParams(params);
textView.setGravity(Gravity.CENTER);
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage());
}
}
return this;
}
/**
* 设置SweetToast实例的显示位置:左上
* @return
*/
public SweetToast leftTop(){
return setGravity(Gravity.LEFT|Gravity.TOP,0,0);
}
/**
* 设置SweetToast实例的显示位置:右上
* @return
*/
public SweetToast rightTop(){
return setGravity(Gravity.RIGHT|Gravity.TOP,0,0);
}
/**
* 设置SweetToast实例的显示位置:左下
* @return
*/
public SweetToast leftBottom(){
return setGravity(Gravity.LEFT|Gravity.BOTTOM,0,0);
}
/**
* 设置SweetToast实例的显示位置:右下
* @return
*/
public SweetToast rightBottom(){
return setGravity(Gravity.RIGHT|Gravity.BOTTOM,0,0);
}
/**
* 设置SweetToast实例的显示位置:上中
* @return
*/
public SweetToast topCenter(){
return setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL,0,0);
}
/**
* 设置SweetToast实例的显示位置:下中
* @return
*/
public SweetToast bottomCenter(){
return setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL,0,0);
}
/**
* 设置SweetToast实例的显示位置:左中
* @return
*/
public SweetToast leftCenter(){
return setGravity(Gravity.LEFT|Gravity.CENTER_VERTICAL,0,0);
}
/**
* 设置SweetToast实例的显示位置:右中
* @return
*/
public SweetToast rightCenter(){
return setGravity(Gravity.RIGHT|Gravity.CENTER_VERTICAL,0,0);
}
/**
* 设置SweetToast实例的显示位置:正中
* @return
*/
public SweetToast center(){
return setGravity(Gravity.CENTER,0,0);
}
/**
* 将SweetToast实例显示在指定View的顶部
* @param targetView 指定View
* @param statusHeight 状态栏显示情况下,状态栏的高度
* @return
*/
public SweetToast layoutAbove(View targetView, int statusHeight){
if(mContentView!=null){
int[] locations = new int[2];
targetView.getLocationOnScreen(locations);
//必须保证指定View的顶部可见
int screenHeight = ScreenUtil.getScreenHeight(mContentView.getContext());
if(locations[1] > statusHeight&&locations[1]<screenHeight){
setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL,0,screenHeight - locations[1]);
}
}
return this;
}
/**
* 将SweetToast实例显示在指定View的底部
* @param targetView
* @param statusHeight
* @return
*/
public SweetToast layoutBellow(View targetView, int statusHeight){
if(mContentView!=null){
int[] locations = new int[2];
targetView.getLocationOnScreen(locations);
//必须保证指定View的底部可见
int screenHeight = ScreenUtil.getScreenHeight(mContentView.getContext());
if(locations[1]+targetView.getHeight() > statusHeight&&locations[1]+targetView.getHeight()<screenHeight){
setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL,0,locations[1]+targetView.getHeight()-statusHeight);
}
}
return this;
}
/********************************************** SweetToast显示及移除 **********************************************/
Handler mHandler = new Handler();
Runnable mHide = new Runnable() {
@Override
public void run() {
handleHide();
}
};
protected void handleHide() {
if(this != null && mContentView != null){
if(stateChangeEnabled){
if(hideEnabled){
if(showing){
mWindowManager.removeView(mContentView);
}
showing = false;
mContentView = null;
}else{
}
}
}
}
protected void handleShow() {
if(mContentView != null){
if(stateChangeEnabled){
if(showEnabled){
try {
mWindowManager.addView(mContentView,mConfiguration.getParams());
long delay = (mConfiguration.getDuration() == LENGTH_LONG || mConfiguration.getDuration() == Toast.LENGTH_LONG) ? LONG_DELAY : ((mConfiguration.getDuration() == LENGTH_SHORT || mConfiguration.getDuration() == Toast.LENGTH_SHORT)? SHORT_DELAY : mConfiguration.getDuration());
mHandler.postDelayed(mHide,delay);
showing = true;
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":213");
}
}
}
}
}
/**
* 保持当前实例的显示状态:不允许向Window中添加或者移除View
*/
protected void removeCallbacks(){
stateChangeEnabled = false;
}
/**
* 设置是否允许展示当前实例
* @param showEnabled
*/
public void setShowEnabled(boolean showEnabled) {
this.showEnabled = showEnabled;
}
/**
* 设置是否允许移除当前实例中的View
* @param hideEnabled
*/
public void setHideEnabled(boolean hideEnabled) {
this.hideEnabled = hideEnabled;
}
/**
* 设置是否允许改变当前实例的展示状态
* @param stateChangeEnabled
*/
public void setStateChangeEnabled(boolean stateChangeEnabled) {
this.stateChangeEnabled = stateChangeEnabled;
}
/**
* 将当前实例添加到队列{@link SweetToastManager#queue}中,若队列为空,则加入队列后直接进行展示
*/
public void show(){
try {
if (Build.VERSION.SDK_INT >= 23) {
//Android6.0以上，需要动态声明权限
if(mContentView!=null && !Settings.canDrawOverlays(mContentView.getContext().getApplicationContext())) {
//用户还未允许该权限
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
mContentView.getContext().startActivity(intent);
return;
} else if(mContentView!=null) {
//用户已经允许该权限
SweetToastManager.show(this);
}
} else {
//Android6.0以下，不用动态声明权限
if (mContentView!=null) {
SweetToastManager.show(this);
}
}
// SweetToastManager.show(this);
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":232");
}
}
/**
* 利用队列{@link SweetToastManager#queue}中正在展示的SweetToast实例,继续展示当前实例的内容
*/
public void showByPrevious(){
try {
if (Build.VERSION.SDK_INT >= 23) {
//Android6.0以上，需要动态声明权限
if(mContentView!=null && !Settings.canDrawOverlays(mContentView.getContext().getApplicationContext())) {
//用户还未允许该权限
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
mContentView.getContext().startActivity(intent);
return;
} else if(mContentView!=null) {
//用户已经允许该权限
SweetToastManager.showByPrevious(this);
}
} else {
//Android6.0以下，不用动态声明权限
if (mContentView!=null) {
SweetToastManager.showByPrevious(this);
}
}
// SweetToastManager.showByPrevious(this);
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":290");
}
}
/**
* 清空队列{@link SweetToastManager#queue}中已经存在的SweetToast实例,直接展示当前实例的内容
*/
public void showImmediate(){
try {
if (Build.VERSION.SDK_INT >= 23) {
//Android6.0以上，需要动态声明权限
if(mContentView!=null && !Settings.canDrawOverlays(mContentView.getContext().getApplicationContext())) {
//用户还未允许该权限
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
mContentView.getContext().startActivity(intent);
return;
} else if(mContentView!=null) {
//用户已经允许该权限
SweetToastManager.showImmediate(this);
}
} else {
//Android6.0以下，不用动态声明权限
if (mContentView!=null) {
SweetToastManager.showImmediate(this);
}
}
// SweetToastManager.showImmediate(this);
}catch (Exception e){
Log.e("幻海流心","e:"+e.getLocalizedMessage()+":252");
}
}
/**
* 移除当前SweetToast并将mContentView置空
*/
public void hide() {
mHandler.post(mHide);
}
/********************************************** SweetToast显示及移除 **********************************************/
//Setter&Getter
public View getContentView() {
return mContentView;
}
public void setContentView(View mContentView) {
this.mContentView = mContentView;
}
public SweetToastConfiguration getConfiguration() {
return mConfiguration;
}
public void setConfiguration(SweetToastConfiguration mConfiguration) {
this.mConfiguration = mConfiguration;
}
public WindowManager getWindowManager() {
return mWindowManager;
}
public void setWindowManager(WindowManager mWindowManager) {
this.mWindowManager = mWindowManager;
}
public boolean isShowing() {
return showing;
}
public void setShowing(boolean showing) {
this.showing = showing;
}
}
源码及所在DEMO已上传至<b>GitHub:</b><b>SweetTips</b>,欢迎大家提Bug,喜欢的话记得Star或Fork下哈!
<b>That's all !</b>
