Android的 - 采取截屏

问题描述

我需要一个屏幕截图并保存屏幕截图。我需要做到这一点，而无需使用电脑或不unrooting手机的任何连接。我需要这样做每当事件被触发。例如，当一个广告被显示在游戏...或者当游戏结束，并显示在蛇等几十可否请您让我知道我该怎么做。我看到一些tutorilas，他们给了code，但，这并不似乎工作

 私人无效getScreen（）
   {
    查看内容= findViewById（R.id.layoutRoot）;
    点阵位图= content.getDrawingCache（）;
    档案文件=新的文件（/ SD卡/ test.png）;
    尝试
    {
        file.createNewFile（）;
        FileOutputStream中的ostream =新的FileOutputStream（文件）;
        bitmap.com preSS（比较pressFormat.PNG，100，ostream的）;
        ostream.close（）;
    }
    赶上（例外五）
    {
        e.printStackTrace（）;
    }
}
 

解决方案

可以提供更多的信息，当您运行code什么行不通？这岂不是捕捉到你想要什么？它会崩溃？

请确保您 R.id.layoutroot 正确的与你的根布局改变......除此之外，它似乎像它会工作...

 ＆LT; com.example.android.snake.SnakeView
 机器人：ID =@ + ID /蛇
    机器人：layout_width =match_parent
            机器人：layout_height =match_parent
            tileSize =24
            /＆GT;

＆LT; RelativeLayout的
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent＆GT;

    ＆LT;的TextView
     机器人：ID =@ + ID /文
        机器人：文本=@字符串/ snake_layout_text_text
        机器人：能见度=看见
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT
        机器人：layout_centerInParent =真
        机器人：重力=center_horizo​​ntal
        机器人：文字颜色=＃ff8888ff
        机器人：TEXTSIZE =24sp/＆GT;
＆LT; / RelativeLayout的＆GT;
 

编辑...

所以，举例来说，如果你使用，你只要把那里的布局，您应该修改 R.id.layout 到 R.id。蛇，那是因为这行：机器人：ID =@ + ID /蛇

我不认为有一个简单的方法来找到/得到一个视图的根布局的ID（如果你想利用任何手机显示屏幕截图。

我刚检查了发射器和其他应用程序，似乎最喜欢的应用程序都置于与ID /内容的FrameLayout，所以你可以尝试使用 android.R.id.content ，但没有保证这会工作，每次...

I need to take a screen shot and save the screen shot. I need to do this without using any connection to PC or without unrooting the phone. I need to do this whenever a event is triggered . For example when an ad is shown in a game ... or when the game ends and shows the scores in snake etc. Can you please let me know How Can i do this. I saw some tutorilas and they gave the code but that doesnt seem to work

private void getScreen()
   {
    View content = findViewById(R.id.layoutRoot);
    Bitmap bitmap = content.getDrawingCache();
    File file = new File("/sdcard/test.png");
    try
    {
        file.createNewFile();
        FileOutputStream ostream = new FileOutputStream(file);
        bitmap.compress(CompressFormat.PNG, 100, ostream);
        ostream.close();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}

解决方案

Can you give more information as to what does not work when you run that code ? Does it not capture what you want ? Does it crash ?

Make sure you change the R.id.layoutroot correctly with your root layout... Beside that it seems like it would work...

<com.example.android.snake.SnakeView
 android:id="@+id/snake"
    android:layout_width="match_parent"
            android:layout_height="match_parent"
            tileSize="24"
            />

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
     android:id="@+id/text"
        android:text="@string/snake_layout_text_text"
        android:visibility="visible"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:gravity="center_horizontal"
        android:textColor="#ff8888ff"
        android:textSize="24sp"/>
</RelativeLayout>

Edit...

So for example, if you use that layout you just put there, you should change the R.id.layout into R.id.snake, that's because of this line : android:id="@+id/snake".

I don't think there is an easy way to find /get the id of the "root" layout of a view (if you wanted to take screenshot of anything the phone is showing.

I just checked the launcher and another application, seems like most app are placed into a FrameLayout with id/content, so you can try to use android.R.id.content, but there is no guaranty this will work every time...

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