命名为ToastUtils的工具类，下面是全部代码，可以直接新建ToastUtils类放在weight文件夹下：
import android.content.Context;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import android.support.annotation.ColorInt;
import android.support.annotation.DrawableRes;
import android.support.annotation.LayoutRes;
import android.support.annotation.NonNull;
import android.support.annotation.StringRes;
import android.support.v4.view.ViewCompat;
import android.support.v4.widget.TextViewCompat;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
public final class ToastUtils {
private static final int COLOR_DEFAULT = 0xFEFFFFFF;
private static final Handler HANDLER = new Handler(Looper.getMainLooper());
private static Toast sToast;
private static int gravity = Gravity.CENTER_HORIZONTAL | Gravity.CENTER;
private static int xOffset = 0;
private static int yOffset = (int) (64 * Utils.getApp().getResources().getDisplayMetrics().density + 0.5);
private static int bgColor = 0xff333333;
private static int bgResource = -1;
private static int msgColor = COLOR_DEFAULT;
private ToastUtils() {
throw new UnsupportedOperationException("u can't instantiate me...");
}
/**
* 设置吐司位置
*
* @param gravity 位置
* @param xOffset x 偏移
* @param yOffset y 偏移
*/
public static void setGravity(final int gravity, final int xOffset, final int yOffset) {
ToastUtils.gravity = gravity;
ToastUtils.xOffset = xOffset;
ToastUtils.yOffset = yOffset;
}
/**
* 设置背景颜色
*
* @param backgroundColor 背景色
*/
public static void setBgColor(@ColorInt final int backgroundColor) {
ToastUtils.bgColor = backgroundColor;
}
/**
* 设置背景资源
*
* @param bgResource 背景资源
*/
public static void setBgResource(@DrawableRes final int bgResource) {
ToastUtils.bgResource = bgResource;
}
/**
* 设置消息颜色
*
* @param msgColor 颜色
*/
public static void setMsgColor(@ColorInt final int msgColor) {
ToastUtils.msgColor = msgColor;
}
/**
* 安全地显示短时吐司
*
* @param text 文本
*/
public static void showShort(@NonNull final CharSequence text) {
show(text, Toast.LENGTH_SHORT);
}
/**
* 安全地显示短时吐司
*
* @param resId 资源 Id
*/
public static void showShort(@StringRes final int resId) {
show(resId, Toast.LENGTH_SHORT);
}
/**
* 安全地显示短时吐司
*
* @param resId 资源 Id
* @param args 参数
*/
public static void showShort(@StringRes final int resId, final Object... args) {
show(resId, Toast.LENGTH_SHORT, args);
}
/**
* 安全地显示短时吐司
*
* @param format 格式
* @param args 参数
*/
public static void showShort(final String format, final Object... args) {
show(format, Toast.LENGTH_SHORT, args);
}
/**
* 安全地显示长时吐司
*
* @param text 文本
*/
public static void showLong(@NonNull final CharSequence text) {
show(text, Toast.LENGTH_LONG);
}
/**
* 安全地显示长时吐司
*
* @param resId 资源 Id
*/
public static void showLong(@StringRes final int resId) {
show(resId, Toast.LENGTH_LONG);
}
/**
* 安全地显示长时吐司
*
* @param resId 资源 Id
* @param args 参数
*/
public static void showLong(@StringRes final int resId, final Object... args) {
show(resId, Toast.LENGTH_LONG, args);
}
/**
* 安全地显示长时吐司
*
* @param format 格式
* @param args 参数
*/
public static void showLong(final String format, final Object... args) {
show(format, Toast.LENGTH_LONG, args);
}
/**
* 安全地显示短时自定义吐司
*/
public static View showCustomShort(@LayoutRes final int layoutId) {
final View view = getView(layoutId);
show(view, Toast.LENGTH_SHORT);
return view;
}
/**
* 安全地显示长时自定义吐司
*/
public static View showCustomLong(@LayoutRes final int layoutId) {
final View view = getView(layoutId);
show(view, Toast.LENGTH_LONG);
return view;
}
/**
* 取消吐司显示
*/
public static void cancel() {
if (sToast != null) {
sToast.cancel();
sToast = null;
}
}
private static void show(@StringRes final int resId, final int duration) {
show(Utils.getApp().getResources().getText(resId).toString(), duration);
}
private static void show(@StringRes final int resId, final int duration, final Object... args) {
show(String.format(Utils.getApp().getResources().getString(resId), args), duration);
}
private static void show(final String format, final int duration, final Object... args) {
show(String.format(format, args), duration);
}
private static void show(final CharSequence text, final int duration) {
HANDLER.post(new Runnable() {
@Override
public void run() {
cancel();
sToast = Toast.makeText(Utils.getApp(), text, duration);
// solve the font of toast
TextView tvMessage = sToast.getView().findViewById(android.R.id.message);
TextViewCompat.setTextAppearance(tvMessage, android.R.style.TextAppearance);
tvMessage.setTextColor(msgColor);
sToast.setGravity(gravity, xOffset, yOffset);
setBg(tvMessage);
sToast.show();
}
});
}
private static void show(final View view, final int duration) {
HANDLER.post(new Runnable() {
@Override
public void run() {
cancel();
sToast = new Toast(Utils.getApp());
sToast.setView(view);
sToast.setDuration(duration);
sToast.setGravity(gravity, xOffset, yOffset);
setBg();
sToast.show();
}
});
}
private static void setBg() {
View toastView = sToast.getView();
if (bgResource != -1) {
toastView.setBackgroundResource(bgResource);
} else if (bgColor != COLOR_DEFAULT) {
Drawable background = toastView.getBackground();
if (background != null) {
background.setColorFilter(
new PorterDuffColorFilter(bgColor, PorterDuff.Mode.SRC_IN)
);
} else {
ViewCompat.setBackground(toastView, new ColorDrawable(bgColor));
}
}
}
private static void setBg(final TextView tvMsg) {
View toastView = sToast.getView();
if (bgResource != -1) {
toastView.setBackgroundResource(bgResource);
tvMsg.setBackgroundColor(Color.TRANSPARENT);
} else if (bgColor != COLOR_DEFAULT) {
Drawable tvBg = toastView.getBackground();
Drawable msgBg = tvMsg.getBackground();
if (tvBg != null && msgBg != null) {
tvBg.setColorFilter(new PorterDuffColorFilter(bgColor, PorterDuff.Mode.SRC_IN));
tvMsg.setBackgroundColor(Color.TRANSPARENT);
} else if (tvBg != null) {
tvBg.setColorFilter(new PorterDuffColorFilter(bgColor, PorterDuff.Mode.SRC_IN));
} else if (msgBg != null) {
msgBg.setColorFilter(new PorterDuffColorFilter(bgColor, PorterDuff.Mode.SRC_IN));
} else {
toastView.setBackgroundColor(bgColor);
}
}
}
private static View getView(@LayoutRes final int layoutId) {
LayoutInflater inflate =
(LayoutInflater) Utils.getApp().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
return inflate != null ? inflate.inflate(layoutId, null) : null;
}
}
