Android 自定义Toast ,并且控制显示时间

今天需求提出定义Toast时间的蛋疼需求，以前也接触过这方面 但是没有详细搞过，所以也遇到了一点波折，废话不多说了 上代码吧

/**
 * Copyright (C) 2014 Luki(liulongke@gmail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ********;

import android.content.Context;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.widget.Toast;

import java.util.Timer;
import java.util.TimerTask;

import *****.R;
import luki.x.base.XLog;

/**
 * 自定义Toast
 */
public class ToastCustom extends Toast {

    private WindowManager mWindowManager;
    private int mDuration;
    private View mView;
    private WindowManager.LayoutParams mParams;
    private Timer mTimer;
    private static ToastCustom mToast;
    private boolean isShow;

    private static final Handler mDismissHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            ToastCustom toastCustom = (ToastCustom) msg.obj;
            try {
                toastCustom.mWindowManager.removeView(toastCustom.mView);
            } catch (Exception e) {
                XLog.w("ToastCustom", e.toString());
            }
            toastCustom.isShow = false;
        }
    };

    private ToastCustom(Context context, CharSequence text, int duration) {
        super(context);
        mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        mTimer = new Timer();

        setView(View.inflate(context, R.layout.dialog_alert_message, null));
        setText(text);
        setDuration(duration);

        mParams = new WindowManager.LayoutParams();
        mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
        mParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
        mParams.format = PixelFormat.TRANSLUCENT;
        mParams.windowAnimations = android.R.style.Animation_Toast;
        mParams.type = WindowManager.LayoutParams.TYPE_TOAST;
        mParams.setTitle("Toast");
        mParams.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
        mParams.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
    }

    /**
     *  创建一个Toast
     * @param context context
     * @param text text 显示文字
     * @param duration duration 显示时间 秒 例如：1 代表1秒
     * @return ToastCustom
     */
    public static ToastCustom getInstance(Context context, CharSequence text, int duration) {
        if (mToast == null) {
            mToast = new ToastCustom(context, text, duration);
        } else {
            mToast.setText(text);
            mToast.setDuration(duration);
        }
        return mToast;
    }

    /**
     * 设置自定义View 但是view里面一定到包含一个android.R.id.message的TextView控件
     * @param view 自定义View
     */
    public void setView(View view) {
        super.setView(view);
        if (mView != null) {
            try {
                mWindowManager.removeView(mView);
            } catch (Exception e) {
                XLog.w("ToastCustom", e.toString());
            }
        }
        mView = view;
    }

    /**
     * 设置显示时间
     * @param duration 显示时间 秒 例如：1 代表1秒
     */
    @Override
    public void setDuration(int duration) {
        super.setDuration(duration);
        mDuration = duration;
    }

    /**
     * Set the location at which the notification should appear on the screen.
     * @see android.view.Gravity
     * @see #getGravity
     */
    @Override
    public void setGravity(int gravity, int xOffset, int yOffset) {
        super.setGravity(gravity, xOffset, yOffset);
        mParams.gravity = gravity;
        mParams.x = xOffset;
        mParams.y = yOffset;
    }

    /**
     * Set the margins of the view.
     *
     * @param horizontalMargin The horizontal margin, in percentage of the
     *        container width, between the container's edges and the
     *        notification
     * @param verticalMargin The vertical margin, in percentage of the
     *        container height, between the container's edges and the
     *        notification
     */
    @Override
    public void setMargin(float horizontalMargin, float verticalMargin) {
        super.setMargin(horizontalMargin, verticalMargin);
        mParams.horizontalMargin = horizontalMargin;
        mParams.verticalMargin = verticalMargin;
    }

    /**
     * 显示Toast，没有将这个Toast放入系统的队列中，自己来管理显示与消失
     */
    public void show() {
        if (!isShow) {
            isShow = true;
            mWindowManager.addView(mView, mParams);
        }
        try {
            mTimer.cancel();
        } catch (Exception e) {
            XLog.w("ToastCustom", e.toString());
        }
        mTimer = new Timer();
        mTimer.schedule(new TimerTask() {
            @Override
            public void run() {
                ToastCustom.this.cancel();
            }
        }, (long) (mDuration * 1000));
    }

    /**
     * 取消Toast
     */
    public void cancel() {
        mDismissHandler.obtainMessage(0, this).sendToTarget();
    }

}

然后上布局文件

<?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:background="@drawable/dialog_corner_black_trans"
    android:orientation="horizontal" >

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:layout_gravity="center_vertical"
        android:src="@drawable/dialog_notify" />

    <TextView
        android:id="@android:id/message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="20dp"
        android:layout_marginTop="20dp"
        android:paddingRight="10dp"
        android:textColor="@color/white"
        android:textSize="@dimen/text_size_16sp" />

</LinearLayout>