Android 自定义Toast

自定义Toast

概述：
系统的toast有时候不能满足我们的要求，这时候我们就需要自定义Toast样式来满足我的需求，比如增大字体、加个图标等等……

效果图

1. 自定义Toast 继承android.widget.Toast

/** * Created by TangRen on 2016/7/18. */public class Toast extends android.widget.Toast {    /**     * Construct an empty Toast object.  You must call {@link #setView} before you     * can call {@link #show}.     *     * @param context The context to use.  Usually your {@link Application}     * or {@link Activity} object.     */    private static LayoutInflater inflater;    public Toast(Context context) {        super(context);    }    /**     * 自定义的Toast     *     * @param context     * @param text     * @param duration 消失的时间     * @return     */    public static Toast makeText(Context context, CharSequence text, int duration) {        Toast toast = new Toast(context);        inflater = inflater.from(context);        View view = inflater.inflate(R.layout.toast, null);        TextView textView = (TextView) view.findViewById(R.id.toast_text);        textView.setText(text);        toast.setView(view);        toast.setGravity(Gravity.BOTTOM, 0, formatDipToPx(context, 80));        toast.setDuration(duration);        return toast;    }    /**     * 把dip单位转成px单位     *     * @param context     * @param dip     * @return     */    public static int formatDipToPx(Context context, int dip) {        DisplayMetrics dm = new DisplayMetrics();        ((Activity) context).getWindowManager().getDefaultDisplay()                .getMetrics(dm);        return (int) Math.ceil(dip * dm.density);    }    /**     * 把px单位转成dip单位     *     * @param context     * @param px     * @return     */    public static int formatPxToDip(Context context, int px) {        DisplayMetrics dm = new DisplayMetrics();        ((Activity) context).getWindowManager().getDefaultDisplay()                .getMetrics(dm);        return (int) Math.ceil(((px * 160) / dm.densityDpi));    }}

2.toast.xml 可根据自己需求写

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:layout_marginLeft="20dp"    android:layout_marginRight="20dp"    android:background="@drawable/toast_shape"    android:gravity="center"    android:orientation="horizontal">    <TextView        android:id="@+id/toast_text"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_marginBottom="20dp"        android:layout_marginLeft="10dp"        android:layout_marginRight="10dp"        android:layout_marginTop="20dp"        android:layout_weight="1"        android:gravity="center"        android:text="小兵智能科技欢迎您！"        android:textColor="#FFFFFF"        android:textSize="17dp" /></LinearLayout>

3.样式文件toast_shape.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">    <corners android:radius="5dp"></corners>    <solid android:color="#aa000000"></solid>    <padding        android:bottom="5dp"        android:left="5dp"        android:right="5dp"        android:top="5dp" /></shape>

3.使用

 findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Toast.makeText(MainActivity.this,"Hello world!",Toast.LENGTH_LONG).show();            }        });

华丽丽的分割线

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其实按照上面写一般情况下是可以处理大部分场景，但是当用户连续点击的时候就会出现连续Toast信息，当然人的肉眼是无法观察到的，那么这个时候该如何处理呢？

package com.szxb.font;import com.example.toastdemo.R;import android.annotation.SuppressLint;import android.content.Context;import android.os.Handler;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.widget.TextView;public class Toast extends android.widget.Toast {    /**     * @author TangRen     * @param args     * @time 2016-7-28     */    private static Toast toast;    private static Handler handler = new Handler();    private static Runnable runnable = new Runnable() {        public void run() {            toast.cancel();            toast = null;        }    };    public Toast(Context context) {        super(context);    }    @SuppressLint("InflateParams")    public static Toast makeToast(Context context, CharSequence text) {        LayoutInflater inflater = (LayoutInflater) context                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);        View view = inflater.inflate(R.layout.toast, null);        TextView textView = (TextView) view.findViewById(R.id.toast_text);        textView.setText(text);        handler.removeCallbacks(runnable);        if (toast == null) {            toast = new Toast(context);            toast.setView(view);            toast.setGravity(Gravity.BOTTOM, 0,                    PixelFormat.formatDipToPx(context, 70));            toast.setDuration(Toast.LENGTH_SHORT);        }        handler.postDelayed(runnable, 1500);//显示1.5S消失        toast.show();        return toast;    }}

Toast.makeToast(MainActivity.this, "小孩子能够").show();