关于弹窗：自定义PopuWindow和Toast

最近做项目要求有弹窗，效果如下



我想到popuWindow 但是有bug，就是弹出次数比较多的时候，它就不消失了。项目组iOS的小伙伴也被同样问题困扰，经讨论有两种解决思路：

1，如果pop.isShowing让其他控件不可选，

2，铺满屏幕，中心黑色，其他都透明

我还没来得及试试。

想到另一种就是吐司，一样一样说：

先把popuWindow代码贴出来：（文中所有源码下载链接都会在文末提供）

PopuUtils.java

package com.example.ylwang.popuwindowdemo;

import android.content.Context;
import android.os.Handler;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.PopupWindow;
import android.widget.TextView;

/**
* Created by ylwang on 2016/5/20.
*/
public class PopuUtils {
private Context context;
private View anchor;//锚，就是为了弹窗的定位
private PopupWindow pop;
private Handler handler = new Handler();

private Runnable runnable = new Runnable() {
@Override
public void run() {
pop.dismiss();
}
};

public PopuUtils(View anchor, Context context) {
this.anchor = anchor;
this.context = context;

}

/**
* @param tips     输入提示框的内容
* @param duration 显示时间，单位：ms
*/
public void show(String tips, int duration) {
View contentView = LayoutInflater.from(context).inflate(R.layout.popuwindow, null);
TextView textView = (TextView) contentView.findViewById(R.id.tv_popu);
textView.setText(tips);
pop = new PopupWindow(contentView, 320, 110);
pop.showAtLocation((View) anchor.getParent(), Gravity.CENTER, 0, 0);
pop.update();//必须添加 否则不显示
handler.postDelayed(runnable, duration);
}
}

MainActivity.java

package com.example.ylwang.popuwindowdemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity implements View.OnClickListener {
private Button btn_show;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}

private <T> T f(int id) {
return (T) findViewById(id);
}

private void init() {
btn_show = f(R.id.btn_show);
btn_show.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_show:
new PopuUtils(btn_show, this).show("随机播放", 1000);
break;
default:
break;
}
}
}

main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>

<Button
android:id="@+id/btn_show"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="弹出popuWindow" />
</RelativeLayout>

drawable中新建一个根目录为shape的xml文件：my_corner_shape.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#b3000000" />
<corners android:radius="20px" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp" />
</shape>

popuWindow的布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="160dp"
android:layout_height="55dp"
android:background="@drawable/my_corner_shape"
android:orientation="vertical">

<TextView
android:id="@+id/tv_popu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textColor="#ffffff"
android:textSize="20sp" />
</LinearLayout>

再说说Toast方法：

注意代码有公用的：

1,popuWindow.xml

2,my_corner_shape.xml

CenterToast.java代码

package com.example.ylwang.toastdemo;

import android.content.Context;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

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

/**
* Created by ylwang on 2016/5/20.
*/
public class CenterToast {
private Toast toast;
private TextView textView;

public CenterToast(Context context) {
View convertView = LayoutInflater.from(context).inflate(R.layout.popuwindow, null);

textView = (TextView) convertView.findViewById(R.id.tv_popu);
toast = new Toast(context);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(convertView);
}

/**
* @param tips     要显示的内容
* @param duration 显示时间 单位：ms
*/
public void showMyToast(String tips, final int duration) {
textView.setText(tips);
final Timer timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
toast.show();
}
}, 0, 3000);
new Timer().schedule(new TimerTask() {
@Override
public void run() {
toast.cancel();
timer.cancel();
}
}, duration);
}
}

MainActivity.java

package com.example.ylwang.toastdemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity implements View.OnClickListener {
private CenterToast centerToast;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}

private void init() {
centerToast = new CenterToast(this);
Button btnShow = (Button) findViewById(R.id.btn_toShow);
btnShow.setOnClickListener(this);
}

@Override
public void onClick(View v) {
centerToast.showMyToast("我的自定义Toast", 1000);
}

}

主界面布局文件代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<Button
android:id="@+id/btn_toShow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="弹出我的自定义土司" />
</RelativeLayout>

关于Toast代码的文字参考可以点击这个链接：http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2013/0302/945.html 另外推荐一篇科普文《几种Toast的基本用法》http://jileniao.net/android-toast-displaytime.html

另外有个关于Toast的工具类：

点点点时候，避免了界面都关了，吐司还在自嗨中，一直弹弹弹

import android.content.Context;
import android.os.Handler;
import android.widget.Toast;

/**
* Toast 每次创建Toast时先做一下判断，
* 如果前面有Toast在显示，只需调用Toast中的setText（）方法将要显示的信息替换即可
* 避免了界面都关了，吐司还在自嗨中，一直弹弹弹
*/
public class CustomToast {
private static Toast mToast;
private static Handler mHandler = new Handler();
private static Runnable r = new Runnable() {
public void run() {
mToast.cancel();
}
};

public static void showToast(Context mContext, String text, int duration) {

mHandler.removeCallbacks(r);
if (mToast != null)
mToast.setText(text);
else
mToast = Toast.makeText(mContext, text, Toast.LENGTH_SHORT);
mHandler.postDelayed(r, duration);

mToast.show();
}

public static void showToast(Context mContext, int resId, int duration) {
showToast(mContext, mContext.getResources().getString(resId), duration);
}
}

本文中源码下载链接：

1，PopuWindow的：http://download.csdn.net/detail/iblade/9526533

2，ToastDemo的：http://download.csdn.net/detail/iblade/9526538