package com.lanyuan.picking.util;
import android.annotation.TargetApi;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.os.Build;
import android.support.annotation.ColorInt;
import android.support.annotation.DrawableRes;
import android.support.annotation.Nullable;
import android.support.annotation.StringRes;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar;
import android.support.v4.widget.Space;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.lanyuan.picking.R;
import java.lang.ref.WeakReference;
/**
* Snackbar工具类
* 功能:
* 1:设置Snackbar显示时间长短
* 1.1:Snackbar.LENGTH_SHORT {@link SnackbarUtils#Short(View, String)}
* 1.2:Snackbar.LENGTH_LONG {@link SnackbarUtils#Long(View, String)}
* 1.3:Snackbar.LENGTH_INDEFINITE {@link SnackbarUtils#Indefinite(View, String)}
* 1.4:CUSTOM {@link SnackbarUtils#Custom(View, String, int)}
* 2:设置Snackbar背景颜色
* 2.1:color_info {@link SnackbarUtils#info()}
* 2.2:color_confirm {@link SnackbarUtils#confirm()}
* 2.3:color_warning {@link SnackbarUtils#warning()}
* 2.4:color_danger {@link SnackbarUtils#danger()}
* 2.5:CUSTOM {@link SnackbarUtils#backColor(int)}
* 3:设置TextView(@+id/snackbar_text)的文字颜色
* {@link SnackbarUtils#messageColor(int)}
* 4:设置Button(@+id/snackbar_action)的文字颜色
* {@link SnackbarUtils#actionColor(int)}
* 5:设置Snackbar背景的透明度
* {@link SnackbarUtils#alpha(float)}
* 6:设置Snackbar显示的位置
* {@link SnackbarUtils#gravityFrameLayout(int)}
* {@link SnackbarUtils#gravityCoordinatorLayout(int)}
* 6.1:Gravity.TOP;
* 6.2:Gravity.BOTTOM;
* 6.3:Gravity.CENTER;
* 7:设置Button(@+id/snackbar_action)文字内容 及 点击监听
* {@link SnackbarUtils#setAction(int, View.OnClickListener)}
* {@link SnackbarUtils#setAction(CharSequence, View.OnClickListener)}
* 8:设置Snackbar展示完成 及 隐藏完成 的监听
* {@link SnackbarUtils#setCallback(Snackbar.Callback)}
* 9:设置TextView(@+id/snackbar_text)左右两侧的图片
* {@link SnackbarUtils#leftAndRightDrawable(Drawable, Drawable)}
* {@link SnackbarUtils#leftAndRightDrawable(Integer, Integer)}
* 10:设置TextView(@+id/snackbar_text)中文字的对齐方式
* 默认效果就是居左对齐
* {@link SnackbarUtils#messageCenter()} 居中对齐
* {@link SnackbarUtils#messageRight()} 居右对齐
* 注意:这两个方法要求SDK>=17.{@link View#setTextAlignment(int)}
* 本来想直接设置Gravity,经试验发现在 TextView(@+id/snackbar_text)上,design_layout_snackbar_include.xml
* 已经设置了android:textAlignment="viewStart",单纯设置Gravity是无效的.
* TEXT_ALIGNMENT_GRAVITY:{@link View#TEXT_ALIGNMENT_GRAVITY}
* 11:向Snackbar布局中添加View(Google不建议,复杂的布局应该使用DialogFragment进行展示)
* {@link SnackbarUtils#addView(int, int)}
* {@link SnackbarUtils#addView(View, int)}
* 注意:使用addView方法的时候要注意新加布局的大小和Snackbar内文字长度，Snackbar过大或过于花哨了可不好看
* 12:设置Snackbar布局的外边距
* {@link SnackbarUtils#margins(int)}
* {@link SnackbarUtils#margins(int, int, int, int)}
* 注意:经试验发现,调用margins后再调用 gravityFrameLayout,则margins无效.
* 为保证margins有效,应该先调用 gravityFrameLayout,在 show() 之前调用 margins
* SnackbarUtil.Long(bt9,"设置Margin值").backColor(0XFF330066).gravityFrameLayout(Gravity.TOP).margins(20,40,60,80).show();
* 13:设置Snackbar布局的圆角半径值
* {@link SnackbarUtils#radius(float)}
* 14:设置Snackbar布局的圆角半径值及边框颜色及边框宽度
* {@link SnackbarUtils#radius(int, int, int)}
* 15:设置Snackbar显示在指定View的上方
* {@link SnackbarUtils#above(View, int, int, int)}
* 注意:
* 1:此方法实际上是 {@link SnackbarUtils#gravityFrameLayout(int)}和{@link SnackbarUtils#margins(int, int, int, int)}的结合.
* 不可与 {@link SnackbarUtils#margins(int, int, int, int)} 混用.
* 2:暂时仅仅支持单行Snackbar,因为方法中涉及的{@link SnackbarUtils#calculateSnackBarHeight()}暂时仅支持单行Snackbar高度计算.
* 16:设置Snackbar显示在指定View的下方
* {@link SnackbarUtils#bellow(View, int, int, int)}
* 注意:同15
* 参考:
* //写的很好的Snackbar源码分析
* http://blog.csdn.net/wuyuxing24/article/details/51220415
* //借鉴了作者部分写法,自定义显示时间 及 向Snackbar中添加View
* http://www.jianshu.com/p/cd1e80e64311
* //借鉴了作者部分写法,4种类型的背景色 及 方法调用的便捷性
* http://www.jianshu.com/p/e3c82b98f151
* //大神'工匠若水'的文章'Android应用坐标系统全面详解',用于计算Snackbar显示的精确位置
* http://blog.csdn.net/yanbober/article/details/50419117
* 示例:
* 在Activity中:
* int total = 0;
* int[] locations = new int[2];
* getWindow().findViewById(android.R.id.content).getLocationInWindow(locations);
* total = locations[1];
* SnackbarUtil.Custom(bt_multimethods,"10s+左右drawable+背景色+圆角带边框+指定View下方",1000*10)
* .leftAndRightDrawable(R.mipmap.i10,R.mipmap.i11)
* .backColor(0XFF668899)
* .radius(16,1,Color.BLUE)
* .bellow(bt_margins,total,16,16)
* .show();
* 作者:幻海流心
* 邮箱:[email protected]
* 2016/11/2 13:56
*/
public class SnackbarUtils {
//设置Snackbar背景颜色
private static final int color_info = 0XFF2094F3;
private static final int color_confirm = 0XFF4CB04E;
private static final int color_warning = 0XFFFEC005;
private static final int color_danger = 0XFFF44336;
//工具类当前持有的Snackbar实例
private static WeakReference<Snackbar> snackbarWeakReference;
private SnackbarUtils() {
throw new RuntimeException("禁止无参创建实例");
}
private SnackbarUtils(@Nullable WeakReference<Snackbar> snackbarWeakReference) {
this.snackbarWeakReference = snackbarWeakReference;
}
/**
* 获取 mSnackbar
*
* @return
*/
public Snackbar getSnackbar() {
if (this.snackbarWeakReference != null && this.snackbarWeakReference.get() != null) {
return this.snackbarWeakReference.get();
} else {
return null;
}
}
/**
* 初始化Snackbar实例
* 展示时间:Snackbar.LENGTH_SHORT
*
* @param view
* @param message
* @return
*/
public static SnackbarUtils Short(View view, String message) {
return new SnackbarUtils(new WeakReference<Snackbar>(Snackbar.make(view, message, Snackbar.LENGTH_SHORT))).backColor(0XFF323232);
}
/**
* 初始化Snackbar实例
* 展示时间:Snackbar.LENGTH_LONG
*
* @param view
* @param message
* @return
*/
public static SnackbarUtils Long(View view, String message) {
return new SnackbarUtils(new WeakReference<Snackbar>(Snackbar.make(view, message, Snackbar.LENGTH_LONG))).backColor(0XFF323232);
}
/**
* 初始化Snackbar实例
* 展示时间:Snackbar.LENGTH_INDEFINITE
*
* @param view
* @param message
* @return
*/
public static SnackbarUtils Indefinite(View view, String message) {
return new SnackbarUtils(new WeakReference<Snackbar>(Snackbar.make(view, message, Snackbar.LENGTH_INDEFINITE))).backColor(0XFF323232);
}
/**
* 初始化Snackbar实例
* 展示时间:duration 毫秒
*
* @param view
* @param message
* @param duration 展示时长(毫秒)
* @return
*/
public static SnackbarUtils Custom(View view, String message, int duration) {
return new SnackbarUtils(new WeakReference<Snackbar>(Snackbar.make(view, message, Snackbar.LENGTH_SHORT).setDuration(duration))).backColor(0XFF323232);
}
/**
* 设置mSnackbar背景色为 color_info
*/
public SnackbarUtils info() {
if (getSnackbar() != null) {
getSnackbar().getView().setBackgroundColor(color_info);
}
return this;
}
/**
* 设置mSnackbar背景色为 color_confirm
*/
public SnackbarUtils confirm() {
if (getSnackbar() != null) {
getSnackbar().getView().setBackgroundColor(color_confirm);
}
return this;
}
/**
* 设置Snackbar背景色为 color_warning
*/
public SnackbarUtils warning() {
if (getSnackbar() != null) {
getSnackbar().getView().setBackgroundColor(color_warning);
}
return this;
}
/**
* 设置Snackbar背景色为 color_warning
*/
public SnackbarUtils danger() {
if (getSnackbar() != null) {
getSnackbar().getView().setBackgroundColor(color_danger);
}
return this;
}
/**
* 设置Snackbar背景色
*
* @param backgroundColor
*/
public SnackbarUtils backColor(@ColorInt int backgroundColor) {
if (getSnackbar() != null) {
getSnackbar().getView().setBackgroundColor(backgroundColor);
}
return this;
}
/**
* 设置TextView(@+id/snackbar_text)的文字颜色
*
* @param messageColor
*/
public SnackbarUtils messageColor(@ColorInt int messageColor) {
if (getSnackbar() != null) {
((TextView) getSnackbar().getView().findViewById(R.id.snackbar_text)).setTextColor(messageColor);
}
return this;
}
/**
* 设置Button(@+id/snackbar_action)的文字颜色
*
* @param actionTextColor
*/
public SnackbarUtils actionColor(@ColorInt int actionTextColor) {
if (getSnackbar() != null) {
((Button) getSnackbar().getView().findViewById(R.id.snackbar_action)).setTextColor(actionTextColor);
}
return this;
}
/**
* 设置 Snackbar背景色 + TextView(@+id/snackbar_text)的文字颜色 + Button(@+id/snackbar_action)的文字颜色
*
* @param backgroundColor
* @param messageColor
* @param actionTextColor
*/
public SnackbarUtils colors(@ColorInt int backgroundColor, @ColorInt int messageColor, @ColorInt int actionTextColor) {
if (getSnackbar() != null) {
getSnackbar().getView().setBackgroundColor(backgroundColor);
((TextView) getSnackbar().getView().findViewById(R.id.snackbar_text)).setTextColor(messageColor);
((Button) getSnackbar().getView().findViewById(R.id.snackbar_action)).setTextColor(actionTextColor);
}
return this;
}
/**
* 设置Snackbar 背景透明度
*
* @param alpha
* @return
*/
public SnackbarUtils alpha(float alpha) {
if (getSnackbar() != null) {
alpha = alpha >= 1.0f ? 1.0f : (alpha <= 0.0f ? 0.0f : alpha);
getSnackbar().getView().setAlpha(alpha);
}
return this;
}
/**
* 设置Snackbar显示的位置
*
* @param gravity
*/
public SnackbarUtils gravityFrameLayout(int gravity) {
if (getSnackbar() != null) {
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(getSnackbar().getView().getLayoutParams().width, getSnackbar().getView().getLayoutParams().height);
params.gravity = gravity;
getSnackbar().getView().setLayoutParams(params);
}
return this;
}
/**
* 设置Snackbar显示的位置,当Snackbar和CoordinatorLayout组合使用的时候
*
* @param gravity
*/
public SnackbarUtils gravityCoordinatorLayout(int gravity) {
if (getSnackbar() != null) {
CoordinatorLayout.LayoutParams params = new CoordinatorLayout.LayoutParams(getSnackbar().getView().getLayoutParams().width, getSnackbar().getView().getLayoutParams().height);
params.gravity = gravity;
getSnackbar().getView().setLayoutParams(params);
}
return this;
}
/**
* 设置按钮文字内容 及 点击监听
* {@link Snackbar#setAction(CharSequence, View.OnClickListener)}
*
* @param resId
* @param listener
* @return
*/
public SnackbarUtils setAction(@StringRes int resId, View.OnClickListener listener) {
if (getSnackbar() != null) {
return setAction(getSnackbar().getView().getResources().getText(resId), listener);
} else {
return this;
}
}
/**
* 设置按钮文字内容 及 点击监听
* {@link Snackbar#setAction(CharSequence, View.OnClickListener)}
*
* @param text
* @param listener
* @return
*/
public SnackbarUtils setAction(CharSequence text, View.OnClickListener listener) {
if (getSnackbar() != null) {
getSnackbar().setAction(text, listener);
}
return this;
}
/**
* 设置 mSnackbar 展示完成 及 隐藏完成 的监听
*
* @param setCallback
* @return
*/
public SnackbarUtils setCallback(Snackbar.Callback setCallback) {
if (getSnackbar() != null) {
getSnackbar().setCallback(setCallback);
}
return this;
}
/**
* 设置TextView(@+id/snackbar_text)左右两侧的图片
*
* @param leftDrawable
* @param rightDrawable
* @return
*/
public SnackbarUtils leftAndRightDrawable(@Nullable @DrawableRes Integer leftDrawable, @Nullable @DrawableRes Integer rightDrawable) {
if (getSnackbar() != null) {
Drawable drawableLeft = null;
Drawable drawableRight = null;
if (leftDrawable != null) {
try {
drawableLeft = getSnackbar().getView().getResources().getDrawable(leftDrawable.intValue());
} catch (Exception e) {
}
}
if (rightDrawable != null) {
try {
drawableRight = getSnackbar().getView().getResources().getDrawable(rightDrawable.intValue());
} catch (Exception e) {
}
}
return leftAndRightDrawable(drawableLeft, drawableRight);
} else {
return this;
}
}
/**
* 设置TextView(@+id/snackbar_text)左右两侧的图片
*
* @param leftDrawable
* @param rightDrawable
* @return
*/
public SnackbarUtils leftAndRightDrawable(@Nullable Drawable leftDrawable, @Nullable Drawable rightDrawable) {
if (getSnackbar() != null) {
TextView message = (TextView) getSnackbar().getView().findViewById(R.id.snackbar_text);
LinearLayout.LayoutParams paramsMessage = (LinearLayout.LayoutParams) message.getLayoutParams();
paramsMessage = new LinearLayout.LayoutParams(paramsMessage.width, paramsMessage.height, 0.0f);
message.setLayoutParams(paramsMessage);
message.setCompoundDrawablePadding(message.getPaddingLeft());
int textSize = (int) message.getTextSize();
if (leftDrawable != null) {
leftDrawable.setBounds(0, 0, textSize, textSize);
}
if (rightDrawable != null) {
rightDrawable.setBounds(0, 0, textSize, textSize);
}
message.setCompoundDrawables(leftDrawable, null, rightDrawable, null);
LinearLayout.LayoutParams paramsSpace = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1.0f);
((Snackbar.SnackbarLayout) getSnackbar().getView()).addView(new Space(getSnackbar().getView().getContext()), 1, paramsSpace);
}
return this;
}
/**
* 设置TextView(@+id/snackbar_text)中文字的对齐方式 居中
*
* @return
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public SnackbarUtils messageCenter() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
if (getSnackbar() != null) {
TextView message = (TextView) getSnackbar().getView().findViewById(R.id.snackbar_text);
//View.setTextAlignment需要SDK>=17
message.setTextAlignment(View.TEXT_ALIGNMENT_GRAVITY);
message.setGravity(Gravity.CENTER);
}
}
return this;
}
/**
* 设置TextView(@+id/snackbar_text)中文字的对齐方式 居右
*
* @return
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public SnackbarUtils messageRight() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
if (getSnackbar() != null) {
TextView message = (TextView) getSnackbar().getView().findViewById(R.id.snackbar_text);
//View.setTextAlignment需要SDK>=17
message.setTextAlignment(View.TEXT_ALIGNMENT_GRAVITY);
message.setGravity(Gravity.CENTER_VERTICAL | Gravity.RIGHT);
}
}
return this;
}
/**
* 向Snackbar布局中添加View(Google不建议,复杂的布局应该使用DialogFragment进行展示)
*
* @param layoutId 要添加的View的布局文件ID
* @param index
* @return
*/
public SnackbarUtils addView(int layoutId, int index) {
if (getSnackbar() != null) {
//加载布局文件新建View
View addView = LayoutInflater.from(getSnackbar().getView().getContext()).inflate(layoutId, null);
return addView(addView, index);
} else {
return this;
}
}
/**
* 向Snackbar布局中添加View(Google不建议,复杂的布局应该使用DialogFragment进行展示)
*
* @param addView
* @param index
* @return
*/
public SnackbarUtils addView(View addView, int index) {
if (getSnackbar() != null) {
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);//设置新建布局参数
//设置新建View在Snackbar内垂直居中显示
params.gravity = Gravity.CENTER_VERTICAL;
addView.setLayoutParams(params);
((Snackbar.SnackbarLayout) getSnackbar().getView()).addView(addView, index);
}
return this;
}
/**
* 设置Snackbar布局的外边距
* 注:经试验发现,调用margins后再调用 gravityFrameLayout,则margins无效.
* 为保证margins有效,应该先调用 gravityFrameLayout,在 show() 之前调用 margins
*
* @param margin
* @return
*/
public SnackbarUtils margins(int margin) {
if (getSnackbar() != null) {
return margins(margin, margin, margin, margin);
} else {
return this;
}
}
/**
* 设置Snackbar布局的外边距
* 注:经试验发现,调用margins后再调用 gravityFrameLayout,则margins无效.
* 为保证margins有效,应该先调用 gravityFrameLayout,在 show() 之前调用 margins
*
* @param left
* @param top
* @param right
* @param bottom
* @return
*/
public SnackbarUtils margins(int left, int top, int right, int bottom) {
if (getSnackbar() != null) {
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(left, top, right, bottom);
getSnackbar().getView().setLayoutParams(params);
}
return this;
}
/**
* 通过SnackBar现在的背景,获取其设置圆角值时候所需的GradientDrawable实例
*
* @param backgroundOri
* @return
*/
private GradientDrawable getRadiusDrawable(Drawable backgroundOri) {
GradientDrawable background = null;
if (backgroundOri instanceof GradientDrawable) {
background = (GradientDrawable) backgroundOri;
} else if (backgroundOri instanceof ColorDrawable) {
int backgroundColor = ((ColorDrawable) backgroundOri).getColor();
background = new GradientDrawable();
background.setColor(backgroundColor);
} else {
}
return background;
}
/**
* 设置Snackbar布局的圆角半径值
*
* @param radius 圆角半径
* @return
*/
public SnackbarUtils radius(float radius) {
if (getSnackbar() != null) {
//将要设置给mSnackbar的背景
GradientDrawable background = getRadiusDrawable(getSnackbar().getView().getBackground());
if (background != null) {
radius = radius <= 0 ? 12 : radius;
background.setCornerRadius(radius);
getSnackbar().getView().setBackgroundDrawable(background);
}
}
return this;
}
/**
* 设置Snackbar布局的圆角半径值及边框颜色及边框宽度
*
* @param radius
* @param strokeWidth
* @param strokeColor
* @return
*/
public SnackbarUtils radius(int radius, int strokeWidth, @ColorInt int strokeColor) {
if (getSnackbar() != null) {
//将要设置给mSnackbar的背景
GradientDrawable background = getRadiusDrawable(getSnackbar().getView().getBackground());
if (background != null) {
radius = radius <= 0 ? 12 : radius;
strokeWidth = strokeWidth <= 0 ? 1 : (strokeWidth >= getSnackbar().getView().findViewById(R.id.snackbar_text).getPaddingTop() ? 2 : strokeWidth);
background.setCornerRadius(radius);
background.setStroke(strokeWidth, strokeColor);
getSnackbar().getView().setBackgroundDrawable(background);
}
}
return this;
}
/**
* 计算单行的Snackbar的高度值(单位 pix)
*
* @return
*/
private int calculateSnackBarHeight() {
//文字高度+paddingTop+paddingBottom : 14sp + 14dp*2
int SnackbarHeight = ScreenUtil.dp2px(getSnackbar().getView().getContext(), 28) + ScreenUtil.sp2px(getSnackbar().getView().getContext(), 14);
return SnackbarHeight;
}
/**
* 设置Snackbar显示在指定View的上方
* 注:暂时仅支持单行的Snackbar,因为{@link SnackbarUtils#calculateSnackBarHeight()}暂时仅支持单行Snackbar的高度计算
*
* @param targetView 指定View
* @param contentViewTop Activity中的View布局区域 距离屏幕顶端的距离
* @param marginLeft 左边距
* @param marginRight 右边距
* @return
*/
public SnackbarUtils above(View targetView, int contentViewTop, int marginLeft, int marginRight) {
if (getSnackbar() != null) {
marginLeft = marginLeft <= 0 ? 0 : marginLeft;
marginRight = marginRight <= 0 ? 0 : marginRight;
int[] locations = new int[2];
targetView.getLocationOnScreen(locations);
int snackbarHeight = calculateSnackBarHeight();
//必须保证指定View的顶部可见 且 单行Snackbar可以完整的展示
if (locations[1] >= contentViewTop + snackbarHeight) {
gravityFrameLayout(Gravity.BOTTOM);
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(marginLeft, 0, marginRight, getSnackbar().getView().getResources().getDisplayMetrics().heightPixels - locations[1]);
getSnackbar().getView().setLayoutParams(params);
}
}
return this;
}
//CoordinatorLayout
public SnackbarUtils aboveCoordinatorLayout(View targetView, int contentViewTop, int marginLeft, int marginRight) {
if (getSnackbar() != null) {
marginLeft = marginLeft <= 0 ? 0 : marginLeft;
marginRight = marginRight <= 0 ? 0 : marginRight;
int[] locations = new int[2];
targetView.getLocationOnScreen(locations);
int snackbarHeight = calculateSnackBarHeight();
//必须保证指定View的顶部可见 且 单行Snackbar可以完整的展示
if (locations[1] >= contentViewTop + snackbarHeight) {
gravityCoordinatorLayout(Gravity.BOTTOM);
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(marginLeft, 0, marginRight, getSnackbar().getView().getResources().getDisplayMetrics().heightPixels - locations[1]);
getSnackbar().getView().setLayoutParams(params);
}
}
return this;
}
/**
* 设置Snackbar显示在指定View的下方
* 注:暂时仅支持单行的Snackbar,因为{@link SnackbarUtils#calculateSnackBarHeight()}暂时仅支持单行Snackbar的高度计算
*
* @param targetView 指定View
* @param contentViewTop Activity中的View布局区域 距离屏幕顶端的距离
* @param marginLeft 左边距
* @param marginRight 右边距
* @return
*/
public SnackbarUtils bellow(View targetView, int contentViewTop, int marginLeft, int marginRight) {
if (getSnackbar() != null) {
marginLeft = marginLeft <= 0 ? 0 : marginLeft;
marginRight = marginRight <= 0 ? 0 : marginRight;
int[] locations = new int[2];
targetView.getLocationOnScreen(locations);
int snackbarHeight = calculateSnackBarHeight();
int screenHeight = ScreenUtil.getScreenHeight(getSnackbar().getView().getContext());
//必须保证指定View的底部可见 且 单行Snackbar可以完整的展示
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//为什么要'+2'? 因为在Android L(Build.VERSION_CODES.LOLLIPOP)以上,例如Button会有一定的'阴影(shadow)',阴影的大小由'高度(elevation)'决定.
//为了在Android L以上的系统中展示的Snackbar不要覆盖targetView的阴影部分太大比例,所以人为减小2px的layout_marginBottom属性.
if (locations[1] + targetView.getHeight() >= contentViewTop && locations[1] + targetView.getHeight() + snackbarHeight + 2 <= screenHeight) {
gravityFrameLayout(Gravity.BOTTOM);
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(marginLeft, 0, marginRight, screenHeight - (locations[1] + targetView.getHeight() + snackbarHeight + 2));
getSnackbar().getView().setLayoutParams(params);
}
} else {
if (locations[1] + targetView.getHeight() >= contentViewTop && locations[1] + targetView.getHeight() + snackbarHeight <= screenHeight) {
gravityFrameLayout(Gravity.BOTTOM);
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(marginLeft, 0, marginRight, screenHeight - (locations[1] + targetView.getHeight() + snackbarHeight));
getSnackbar().getView().setLayoutParams(params);
}
}
}
return this;
}
public SnackbarUtils bellowCoordinatorLayout(View targetView, int contentViewTop, int marginLeft, int marginRight) {
if (getSnackbar() != null) {
marginLeft = marginLeft <= 0 ? 0 : marginLeft;
marginRight = marginRight <= 0 ? 0 : marginRight;
int[] locations = new int[2];
targetView.getLocationOnScreen(locations);
int snackbarHeight = calculateSnackBarHeight();
int screenHeight = ScreenUtil.getScreenHeight(getSnackbar().getView().getContext());
//必须保证指定View的底部可见 且 单行Snackbar可以完整的展示
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//为什么要'+2'? 因为在Android L(Build.VERSION_CODES.LOLLIPOP)以上,例如Button会有一定的'阴影(shadow)',阴影的大小由'高度(elevation)'决定.
//为了在Android L以上的系统中展示的Snackbar不要覆盖targetView的阴影部分太大比例,所以人为减小2px的layout_marginBottom属性.
if (locations[1] + targetView.getHeight() >= contentViewTop && locations[1] + targetView.getHeight() + snackbarHeight + 2 <= screenHeight) {
gravityCoordinatorLayout(Gravity.BOTTOM);
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(marginLeft, 0, marginRight, screenHeight - (locations[1] + targetView.getHeight() + snackbarHeight + 2));
getSnackbar().getView().setLayoutParams(params);
}
} else {
if (locations[1] + targetView.getHeight() >= contentViewTop && locations[1] + targetView.getHeight() + snackbarHeight <= screenHeight) {
gravityCoordinatorLayout(Gravity.BOTTOM);
ViewGroup.LayoutParams params = getSnackbar().getView().getLayoutParams();
((ViewGroup.MarginLayoutParams) params).setMargins(marginLeft, 0, marginRight, screenHeight - (locations[1] + targetView.getHeight() + snackbarHeight));
getSnackbar().getView().setLayoutParams(params);
}
}
}
return this;
}
/**
* 显示 mSnackbar
*/
public void show() {
if (getSnackbar() != null) {
getSnackbar().show();
}
}
}
