Material Design 下的Toast 拓展 Snackbar
来源：互联网 发布：人工智能a7论坛 编辑：程序博客网 时间：2024/05/16 02:37
前些天看到一个类似 Toast 的提示效果的 控件，以前没用过，今天整理一下。
Snackbar 是介于Toast 和Dialog 之间的一种用户交互提示。但是查看源码，发现不能继承重写该类，不能自定义布局 ，甚至不能改变背景颜色，不知道这样设计的目的是什么。
下面介绍一下使用：
在 gradle 中添加
compile 'com.android.support:design:23.0.0'
导入 依赖包
简答使用：
Snackbar.make(v, "Snackbar", Snackbar.LENGTH_LONG).show();
只简单的显示。与用户进行交互需要再添加 setAction()方法。
Snackbar.make(v, "Snackbar", Snackbar.LENGTH_LONG).setAction("Click", new View.OnClickListener() { @Override public void onClick(View v) { Log.i("",""); } });Snackbar 提供了 交互按钮字体颜色的方法，没有提供 提示文字的颜色方法，默认的为白色字体 setActionTextColor
Snackbar.make(v, "Snackbar", Snackbar.LENGTH_LONG).setActionTextColor(0xffff0000). setAction("Click", new View.OnClickListener() { @Override public void onClick(View v) { Log.i("",""); } }).show();
虽然没有提供 提示语修改颜色的方法，但可以通过Html 加载的方式去改变字体颜色。效果如下
StringBuilder stringBuilder = new StringBuilder(); double balance =332; stringBuilder.append("剩余金额："+"<font color=\"#fe5050\">" + balance + "</font>"+"元"); Snackbar.make(v, "", Snackbar.LENGTH_LONG).setText(Html.fromHtml(stringBuilder.toString())). setActionTextColor(Color.parseColor("#ffff00")). setDuration(Snackbar.LENGTH_INDEFINITE). // 设置这个值不会自动消失 setAction("retry", new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(MainActivity.this, "Click", Toast.LENGTH_LONG); } }).show();
还需要注意的是 activity需要继承AppCompatActivity。
SnackBar 源码：
//// Source code recreated from a .class file by IntelliJ IDEA// (powered by Fernflower decompiler)//package android.support.design.widget;import android.content.Context;import android.content.res.ColorStateList;import android.content.res.TypedArray;import android.os.Handler;import android.os.Looper;import android.os.Message;import android.os.Build.VERSION;import android.os.Handler.Callback;import android.support.annotation.Nullable;import android.support.annotation.StringRes;import android.support.design.R.anim;import android.support.design.R.dimen;import android.support.design.R.id;import android.support.design.R.layout;import android.support.design.R.styleable;import android.support.design.widget.AnimationUtils;import android.support.design.widget.CoordinatorLayout;import android.support.design.widget.SnackbarManager;import android.support.design.widget.SwipeDismissBehavior;import android.support.design.widget.SwipeDismissBehavior.OnDismissListener;import android.support.v4.view.ViewCompat;import android.support.v4.view.ViewPropertyAnimatorListenerAdapter;import android.text.TextUtils;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.view.ViewParent;import android.view.View.MeasureSpec;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.view.animation.Animation;import android.view.animation.Animation.AnimationListener;import android.widget.FrameLayout;import android.widget.LinearLayout;import android.widget.TextView;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;public class Snackbar { public static final int LENGTH_INDEFINITE = -2; public static final int LENGTH_SHORT = -1; public static final int LENGTH_LONG = 0; private static final int ANIMATION_DURATION = 250; private static final int ANIMATION_FADE_DURATION = 180; private static final Handler sHandler = new Handler(Looper.getMainLooper(), new Callback() { public boolean handleMessage(Message message) { switch(message.what) { case 0: ((Snackbar)message.obj).showView(); return true; case 1: ((Snackbar)message.obj).hideView(); return true; default: return false; } } }); private static final int MSG_SHOW = 0; private static final int MSG_DISMISS = 1; private final ViewGroup mParent; private final Context mContext; private final Snackbar.SnackbarLayout mView; private int mDuration; private final android.support.design.widget.SnackbarManager.Callback mManagerCallback = new android.support.design.widget.SnackbarManager.Callback() { public void show() { Snackbar.sHandler.sendMessage(Snackbar.sHandler.obtainMessage(0, Snackbar.this)); } public void dismiss() { Snackbar.sHandler.sendMessage(Snackbar.sHandler.obtainMessage(1, Snackbar.this)); } }; Snackbar(ViewGroup parent) { this.mParent = parent; this.mContext = parent.getContext(); LayoutInflater inflater = LayoutInflater.from(this.mContext); this.mView = (Snackbar.SnackbarLayout)inflater.inflate(layout.layout_snackbar, this.mParent, false); } public static Snackbar make(View view, CharSequence text, int duration) { Snackbar snackbar = new Snackbar(findSuitableParent(view)); snackbar.setText(text); snackbar.setDuration(duration); return snackbar; } public static Snackbar make(View view, int resId, int duration) { return make(view, view.getResources().getText(resId), duration); } @Nullable private static ViewGroup findSuitableParent(View view) { ViewGroup fallback = null; do { if(view instanceof CoordinatorLayout) { return (ViewGroup)view; } if(view instanceof FrameLayout) { if(view.getId() == 16908290) { return (ViewGroup)view; } fallback = (ViewGroup)view; } if(view != null) { ViewParent parent = view.getParent(); view = parent instanceof View?(View)parent:null; } } while(view != null); return fallback; } public Snackbar setAction(@StringRes int resId, OnClickListener listener) { return this.setAction(this.mContext.getText(resId), listener); } public Snackbar setAction(CharSequence text, final OnClickListener listener) { TextView tv = this.mView.getActionView(); if(!TextUtils.isEmpty(text) && listener != null) { tv.setVisibility(0); tv.setText(text); tv.setOnClickListener(new OnClickListener() { public void onClick(View view) { listener.onClick(view); Snackbar.this.dismiss(); } }); } else { tv.setVisibility(8); tv.setOnClickListener((OnClickListener)null); } return this; } public Snackbar setActionTextColor(ColorStateList colors) { TextView tv = this.mView.getActionView(); tv.setTextColor(colors); return this; } public Snackbar setActionTextColor(int color) { TextView tv = this.mView.getActionView(); tv.setTextColor(color); return this; } public Snackbar setText(CharSequence message) { TextView tv = this.mView.getMessageView(); tv.setText(message); return this; } public Snackbar setText(@StringRes int resId) { return this.setText(this.mContext.getText(resId)); } public Snackbar setDuration(int duration) { this.mDuration = duration; return this; } public int getDuration() { return this.mDuration; } public View getView() { return this.mView; } public void show() { SnackbarManager.getInstance().show(this.mDuration, this.mManagerCallback); } public void dismiss() { SnackbarManager.getInstance().dismiss(this.mManagerCallback); } final void showView() { if(this.mView.getParent() == null) { LayoutParams lp = this.mView.getLayoutParams(); if(lp instanceof android.support.design.widget.CoordinatorLayout.LayoutParams) { Snackbar.Behavior behavior = new Snackbar.Behavior(); behavior.setStartAlphaSwipeDistance(0.1F); behavior.setEndAlphaSwipeDistance(0.6F); behavior.setSwipeDirection(0); behavior.setListener(new OnDismissListener() { public void onDismiss(View view) { Snackbar.this.dismiss(); } public void onDragStateChanged(int state) { switch(state) { case 0: SnackbarManager.getInstance().restoreTimeout(Snackbar.this.mManagerCallback); break; case 1: case 2: SnackbarManager.getInstance().cancelTimeout(Snackbar.this.mManagerCallback); } } }); ((android.support.design.widget.CoordinatorLayout.LayoutParams)lp).setBehavior(behavior); } this.mParent.addView(this.mView); } if(ViewCompat.isLaidOut(this.mView)) { this.animateViewIn(); } else { this.mView.setOnLayoutChangeListener(new Snackbar.SnackbarLayout.OnLayoutChangeListener() { public void onLayoutChange(View view, int left, int top, int right, int bottom) { Snackbar.this.animateViewIn(); Snackbar.this.mView.setOnLayoutChangeListener((Snackbar.SnackbarLayout.OnLayoutChangeListener)null); } }); } } private void animateViewIn() { if(VERSION.SDK_INT >= 14) { ViewCompat.setTranslationY(this.mView, (float)this.mView.getHeight()); ViewCompat.animate(this.mView).translationY(0.0F).setInterpolator(AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR).setDuration(250L).setListener(new ViewPropertyAnimatorListenerAdapter() { public void onAnimationStart(View view) { Snackbar.this.mView.animateChildrenIn(70, 180); } public void onAnimationEnd(View view) { SnackbarManager.getInstance().onShown(Snackbar.this.mManagerCallback); } }).start(); } else { Animation anim = android.view.animation.AnimationUtils.loadAnimation(this.mView.getContext(), anim.snackbar_in); anim.setInterpolator(AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR); anim.setDuration(250L); anim.setAnimationListener(new AnimationListener() { public void onAnimationEnd(Animation animation) { SnackbarManager.getInstance().onShown(Snackbar.this.mManagerCallback); } public void onAnimationStart(Animation animation) { } public void onAnimationRepeat(Animation animation) { } }); this.mView.startAnimation(anim); } } private void animateViewOut() { if(VERSION.SDK_INT >= 14) { ViewCompat.animate(this.mView).translationY((float)this.mView.getHeight()).setInterpolator(AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR).setDuration(250L).setListener(new ViewPropertyAnimatorListenerAdapter() { public void onAnimationStart(View view) { Snackbar.this.mView.animateChildrenOut(0, 180); } public void onAnimationEnd(View view) { Snackbar.this.onViewHidden(); } }).start(); } else { Animation anim = android.view.animation.AnimationUtils.loadAnimation(this.mView.getContext(), anim.snackbar_out); anim.setInterpolator(AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR); anim.setDuration(250L); anim.setAnimationListener(new AnimationListener() { public void onAnimationEnd(Animation animation) { Snackbar.this.onViewHidden(); } public void onAnimationStart(Animation animation) { } public void onAnimationRepeat(Animation animation) { } }); this.mView.startAnimation(anim); } } final void hideView() { if(this.mView.getVisibility() == 0 && !this.isBeingDragged()) { this.animateViewOut(); } else { this.onViewHidden(); } } private void onViewHidden() { this.mParent.removeView(this.mView); SnackbarManager.getInstance().onDismissed(this.mManagerCallback); } private boolean isBeingDragged() { LayoutParams lp = this.mView.getLayoutParams(); if(lp instanceof android.support.design.widget.CoordinatorLayout.LayoutParams) { android.support.design.widget.CoordinatorLayout.LayoutParams cllp = (android.support.design.widget.CoordinatorLayout.LayoutParams)lp; android.support.design.widget.CoordinatorLayout.Behavior behavior = cllp.getBehavior(); if(behavior instanceof SwipeDismissBehavior) { return ((SwipeDismissBehavior)behavior).getDragState() != 0; } } return false; } final class Behavior extends SwipeDismissBehavior<Snackbar.SnackbarLayout> { Behavior() { } public boolean onInterceptTouchEvent(CoordinatorLayout parent, Snackbar.SnackbarLayout child, MotionEvent event) { if(parent.isPointInChildBounds(child, (int)event.getX(), (int)event.getY())) { switch(event.getActionMasked()) { case 0: SnackbarManager.getInstance().cancelTimeout(Snackbar.this.mManagerCallback); break; case 1: case 3: SnackbarManager.getInstance().restoreTimeout(Snackbar.this.mManagerCallback); case 2: } } return super.onInterceptTouchEvent(parent, child, event); } } public static class SnackbarLayout extends LinearLayout { private TextView mMessageView; private TextView mActionView; private int mMaxWidth; private int mMaxInlineActionWidth; private Snackbar.SnackbarLayout.OnLayoutChangeListener mOnLayoutChangeListener; public SnackbarLayout(Context context) { this(context, (AttributeSet)null); } public SnackbarLayout(Context context, AttributeSet attrs) { super(context, attrs); TypedArray a = context.obtainStyledAttributes(attrs, styleable.SnackbarLayout); this.mMaxWidth = a.getDimensionPixelSize(styleable.SnackbarLayout_android_maxWidth, -1); this.mMaxInlineActionWidth = a.getDimensionPixelSize(styleable.SnackbarLayout_maxActionInlineWidth, -1); if(a.hasValue(styleable.SnackbarLayout_elevation)) { ViewCompat.setElevation(this, (float)a.getDimensionPixelSize(styleable.SnackbarLayout_elevation, 0)); } a.recycle(); this.setClickable(true); LayoutInflater.from(context).inflate(layout.layout_snackbar_include, this); } protected void onFinishInflate() { super.onFinishInflate(); this.mMessageView = (TextView)this.findViewById(id.snackbar_text); this.mActionView = (TextView)this.findViewById(id.snackbar_action); } TextView getMessageView() { return this.mMessageView; } TextView getActionView() { return this.mActionView; } protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); if(this.mMaxWidth > 0 && this.getMeasuredWidth() > this.mMaxWidth) { widthMeasureSpec = MeasureSpec.makeMeasureSpec(this.mMaxWidth, 1073741824); super.onMeasure(widthMeasureSpec, heightMeasureSpec); } int multiLineVPadding = this.getResources().getDimensionPixelSize(dimen.snackbar_padding_vertical_2lines); int singleLineVPadding = this.getResources().getDimensionPixelSize(dimen.snackbar_padding_vertical); boolean isMultiLine = this.mMessageView.getLayout().getLineCount() > 1; boolean remeasure = false; if(isMultiLine && this.mMaxInlineActionWidth > 0 && this.mActionView.getMeasuredWidth() > this.mMaxInlineActionWidth) { if(this.updateViewsWithinLayout(1, multiLineVPadding, multiLineVPadding - singleLineVPadding)) { remeasure = true; } } else { int messagePadding = isMultiLine?multiLineVPadding:singleLineVPadding; if(this.updateViewsWithinLayout(0, messagePadding, messagePadding)) { remeasure = true; } } if(remeasure) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); } } void animateChildrenIn(int delay, int duration) { ViewCompat.setAlpha(this.mMessageView, 0.0F); ViewCompat.animate(this.mMessageView).alpha(1.0F).setDuration((long)duration).setStartDelay((long)delay).start(); if(this.mActionView.getVisibility() == 0) { ViewCompat.setAlpha(this.mActionView, 0.0F); ViewCompat.animate(this.mActionView).alpha(1.0F).setDuration((long)duration).setStartDelay((long)delay).start(); } } void animateChildrenOut(int delay, int duration) { ViewCompat.setAlpha(this.mMessageView, 1.0F); ViewCompat.animate(this.mMessageView).alpha(0.0F).setDuration((long)duration).setStartDelay((long)delay).start(); if(this.mActionView.getVisibility() == 0) { ViewCompat.setAlpha(this.mActionView, 1.0F); ViewCompat.animate(this.mActionView).alpha(0.0F).setDuration((long)duration).setStartDelay((long)delay).start(); } } protected void onLayout(boolean changed, int l, int t, int r, int b) { super.onLayout(changed, l, t, r, b); if(changed && this.mOnLayoutChangeListener != null) { this.mOnLayoutChangeListener.onLayoutChange(this, l, t, r, b); } } void setOnLayoutChangeListener(Snackbar.SnackbarLayout.OnLayoutChangeListener onLayoutChangeListener) { this.mOnLayoutChangeListener = onLayoutChangeListener; } private boolean updateViewsWithinLayout(int orientation, int messagePadTop, int messagePadBottom) { boolean changed = false; if(orientation != this.getOrientation()) { this.setOrientation(orientation); changed = true; } if(this.mMessageView.getPaddingTop() != messagePadTop || this.mMessageView.getPaddingBottom() != messagePadBottom) { updateTopBottomPadding(this.mMessageView, messagePadTop, messagePadBottom); changed = true; } return changed; } private static void updateTopBottomPadding(View view, int topPadding, int bottomPadding) { if(ViewCompat.isPaddingRelative(view)) { ViewCompat.setPaddingRelative(view, ViewCompat.getPaddingStart(view), topPadding, ViewCompat.getPaddingEnd(view), bottomPadding); } else { view.setPadding(view.getPaddingLeft(), topPadding, view.getPaddingRight(), bottomPadding); } } interface OnLayoutChangeListener { void onLayoutChange(View var1, int var2, int var3, int var4, int var5); } } @Retention(RetentionPolicy.SOURCE) public @interface Duration { }} 0 0
- Material Design 下的Toast 拓展 Snackbar
- Material Design： NavigationView FlaotingActionBar SnackBar的使用
- Material Design之TextInputLayout、Snackbar的使用
- Material Design （三），Snackbar的使用
- Material Design： NavigationView FlaotingActionBar SnackBar的使用
- Material Design之Snackbar
- Material Design之Snackbar
- Material Design中的Snackbar
- Material Design之Snackbar
- Material Design UI Widgets —— Snackbar （Welcome Snackbar, Goodbye Toast!）
- Android Material Design Snackbar Example
- android material design之snackbar
- Material Design使用之SnackBar
- Android Material Design之Snackbar
- Material Design系列之SnackBar
- Material Design-UI之SnackBar
- Android Material Design 之 Snackbar
- Material Design风格之Snackbar
- Python网络数据采集11(译者：哈雷)
- 在进行jpa更新操作中报异常Cascade="All-Delete-Orphan" 处理
- Java实现图片水印效果
- ThinkPHP 模板循环输出 Volist 标签
- 供应商的余额,从哪个表里取
- Material Design 下的Toast 拓展 Snackbar
- Netty 4.0 新的特性及需要注意的地方
- _bstr_t与CString相互转换
- [leetcode]74. Search a 2D Matrix -- JavaScript 代码
- tutorialspoint——很好的学习网站
- poj1292
- SWift Lesson1
- 5款替代微软Visio的开源免费软件
- ARM Linux 内核启动总结 之 创建临时页表
