Android Toast使用的简单小结(推荐)

@BindView(R.id.btn_basic_toast) Button basicToast;@BindView(R.id.btn_basic_toast2) Button basicToast2;@BindView(R.id.btn_custom_location) Button customLocation;@BindView(R.id.btn_custom_picture) Button customPicture;@BindView(R.id.btn_custom_smile) Button customSmile;@BindView(R.id.btn_custom_smile2) Button customSmile2;

// private static CustomToast customToastView;

public static void newInstance(Context context){

Intent intent = new Intent(context, ToastActivity.class);context.startActivity(intent);}

@Override protected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);}

@Override public int getResourcesId() {return R.layout.activity_toast;}

@Override public void initView() {

}

@Override public void initData() {

}

@Override public int getTitleText() {return R.string.play_toast;}

@OnClick( {R.id.btn_basic_toast, R.id.btn_custom_location, R.id.btn_custom_picture, R.id.btn_custom_smile, R.id.btn_custom_smile2,R.id.btn_basic_toast2} ) public void onViewClick(View v){

switch (v.getId()){

/* 最基本的Toast，解决了原生Toast不能快速更新的问题 */ case R.id.btn_basic_toast:ToastUtils.showToast(this, "这是最基本的Toast");break;case R.id.btn_basic_toast2:ToastUtils.showToast(this, "===已更新===");break;

/* 自定义位置的Toast* 相对于Gravity.LEFT位置， x方向上的偏移量, y方向上的偏移量 */ case R.id.btn_custom_location:Toast toast = Toast.makeText(ToastActivity.this, "自定义位置的Toast", Toast.LENGTH_SHORT);toast.setGravity(Gravity.LEFT,0, 0);toast.show();break;

/* 带图片的Toast，自定义布局* 参考 Toast.makeText() 方法 */ case R.id.btn_custom_picture:Toast result = new Toast(this);View toastView = LayoutInflater.from(this).inflate(R.layout.toast_custom, null);ImageView img = (ImageView) toastView.findViewById(R.id.iv_img);TextView msg = (TextView) toastView.findViewById(R.id.tv_msg);img.setImageResource(R.mipmap.jyfr_icon_mpossh3x);msg.setText(R.string.picture_toast);

result.setView(toastView);result.setGravity(Gravity.BOTTOM, 0 , 0);result.setDuration(Toast.LENGTH_SHORT);result.show();break;

/* 自定义Toast控件，带个动画效果* 解决了原生Toast不能快速更新的问题* 但是并没有摆脱原生Toast显示方法的调用 */ case R.id.btn_custom_smile:ToastUtils.showToast(this, "在看我", true);break;case R.id.btn_custom_smile2:ToastUtils.showToast(this, "==还在看我==", true);break;

/*** 初始化一些变量* 实现3个构造函数* 初始化画笔参数和矩形参数* 设置画笔的参数及矩形的参数* 重写onMeasure：onMeasure()方法中主要负责测量，决定控件本身或其子控件所占的宽高* 重写onDraw：onDraw()方法负责绘制，即如果我们希望得到的效果在Android原生控件中没有现成的支持，那么我们就需要自己绘制我们的自定义控件的显示效果。

* 自定义View中的动画效果实现*/ private Toast toast;private Context context;

RectF rectF = new RectF(); //矩形，设置Toast布局时使用ValueAnimator valueAnimator; //属性动画private Paint paint; //自定义View的画笔

float mAnimatedValue = 0f;private float mWidth = 0f; //view的宽private float mPadding = 0f; //view的内边距private float endAngle = 0f; //圆弧结束的度数

private float mEyeWidth = 0f; //笑脸的眼睛半径private boolean isSmileLeft = false;private boolean isSmileRight = false;

public CustomToast(Context context){super(context);this.context = context;}

public CustomToast(Context context, AttributeSet attrs){super(context, attrs);this.context = context;}

public CustomToast(Context context, AttributeSet attrs, int defStyleAttr){super(context, attrs, defStyleAttr);this.context = context;}

private void initPaint(){paint = new Paint();paint.setAntiAlias(true); //抗锯齿paint.setStyle(Paint.Style.STROKE); //画笔的样式：空心paint.setColor(Color.parseColor("#5cb85c")); //绘制的颜色paint.setStrokeWidth(dip2px(2)); //设置笔刷的粗细}

private void initRect(){rectF = new RectF(mPadding, mPadding, mWidth-mPadding, mWidth-mPadding);}

//dip转px。为了支持多分辨率手机public int dip2px(float dpValue){final float scale = getContext().getResources().getDisplayMetrics().density;return (int) (dpValue * scale + 0.5f);}

@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);initPaint();initRect();mWidth = getMeasuredWidth(); //view的宽度mPadding = dip2px(10);mEyeWidth = dip2px(3);}

//每次触摸了自定义View/ViewGroup时都会触发onDraw()方法@Override protected void onDraw(Canvas canvas) {super.onDraw(canvas);paint.setStyle(Paint.Style.STROKE);canvas.drawArc(rectF, 180, endAngle, false, paint ); //画微笑圆弧paint.setStyle(Paint.Style.FILL); //画笔的样式：实心if (isSmileLeft){canvas.drawCircle(mPadding+mEyeWidth+mEyeWidth/2, mWidth/3, mEyeWidth, paint); //绘制圆圈}if (isSmileRight){canvas.drawCircle(mWidth-mPadding-mEyeWidth-mEyeWidth/2, mWidth/3, mEyeWidth, paint);}}

//开启动画public void startAnimator(boolean playAnimate){if (playAnimate){stopAnimator();startViewAnim(0f, 1f, 2000);}}

//停止动画public void stopAnimator(){if (valueAnimator != null){clearAnimation();isSmileLeft = false;isSmileRight = false;mAnimatedValue = 0f;valueAnimator.end();}}

/*** 开始动画* @param start 起始值* @param end 结束值* @param time 动画的时间* @return*/ public ValueAnimator startViewAnim(float start, float end, long time){

valueAnimator = ValueAnimator.ofFloat(start, end); //设置 ValueAnimator 的起始值和结束值valueAnimator.setDuration(time); //设置动画时间valueAnimator.setInterpolator(new LinearInterpolator()); //设置补间器，控制动画的变化速率valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { //设置监听器。监听动画值的变化，做出相应方式@Override public void onAnimationUpdate(ValueAnimator animation) {mAnimatedValue = (float) valueAnimator.getAnimatedValue();if (mAnimatedValue < 0.5){isSmileLeft = false;isSmileRight = false;endAngle = -360 * (mAnimatedValue);} else if (mAnimatedValue > 0.55 && mAnimatedValue < 0.7){endAngle = -180;isSmileLeft = true;isSmileRight = false;} else{endAngle = -180;isSmileLeft = true;isSmileRight = true;}postInvalidate(); //重绘}});

if (!valueAnimator.isRunning()){valueAnimator.start();}return valueAnimator;}

/*** 本质上还是依赖Android原生Toast的显示方法来进行显示，* 只是引入了自定义的布局，添加了自定义动画*/ public void show(String message, boolean playAnimate){

/* 解决多次点击Toast一直提示不消失问题 */ if (toast == null){toast = new Toast(context);}View customToastView = LayoutInflater.from(context).inflate(R.layout.toast_custom, null);TextView msg2 = (TextView) customToastView.findViewById(R.id.tv_msg);msg2.setText(message);msg2.setBackgroundResource(R.drawable.shape_text_toast);msg2.setTextColor(Color.parseColor("#ffffff"));

ImageView img2 = (ImageView) customToastView.findViewById(R.id.iv_img);img2.setImageResource(R.mipmap.jyfr_icon_mpossh3x);// img2.setVisibility(View.GONE);

CustomToast customToast = (CustomToast) customToastView.findViewById(R.id.smileView);customToast.startAnimator(playAnimate);

toast.setView(customToastView);toast.setGravity(Gravity.BOTTOM, 0 , 0);toast.setDuration(Toast.LENGTH_SHORT);toast.show();}

private static Toast toast;

private static CustomToast customToast;

/*** 自定义CustomToast的显示* @param context 上下文* @param message 提示内容* @param playAnimate 是否显示动画 true，显示 false，不显示*/ public static void showToast(Context context, String message, boolean playAnimate){

if (customToast == null){customToast = new CustomToast(context);}customToast.show(message, playAnimate);}

/*** Android原生Toast的显示，主要解决点多少就提示多少次的问题*/ public static void showToast(Context context, String content){

if (toast == null){toast = Toast.makeText(context, content, Toast.LENGTH_SHORT);} else {toast.setText(content);}toast.show();}