如何截取当前活动的屏幕截图然后分享? [英] How to take a screenshot of a current Activity and then share it?

问题描述

我需要截取 Activity 的屏幕截图(没有标题栏，用户不应看到实际已截取的屏幕截图)，然后通过操作菜单按钮共享"进行共享.我已经尝试了一些解决方案，但它们对我不起作用.有什么想法吗?

I need to take a screenshot of Activity (without the title bar, and the user should NOT see that a screenshot has actually been taken) and then share it via an action menu button "share". I have already tried some solutions, but they didn't work for me. Any ideas?

推荐答案

这就是我截取屏幕并分享的方式.

This is how I captured the screen and shared it.

首先，从当前活动获取根视图:

First, get root view from current activity:

View rootView = getWindow().getDecorView().findViewById(android.R.id.content);

其次，捕获根视图:

 public static Bitmap getScreenShot(View view) {
       View screenView = view.getRootView();
       screenView.setDrawingCacheEnabled(true);
       Bitmap bitmap = Bitmap.createBitmap(screenView.getDrawingCache());
       screenView.setDrawingCacheEnabled(false);
       return bitmap;
 }

第三，将Bitmap存入SDCard:

Third, store the Bitmap into the SDCard:

public static void store(Bitmap bm, String fileName){
    final static String dirPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Screenshots";
    File dir = new File(dirPath);
    if(!dir.exists())
        dir.mkdirs();
    File file = new File(dirPath, fileName);
    try {
        FileOutputStream fOut = new FileOutputStream(file);
        bm.compress(Bitmap.CompressFormat.PNG, 85, fOut);
        fOut.flush();
        fOut.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

最后，分享一下当前Activity的截图:

At last, share the screenshot of current Activity:

private void shareImage(File file){
    Uri uri = Uri.fromFile(file);
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_SEND);
    intent.setType("image/*");

    intent.putExtra(android.content.Intent.EXTRA_SUBJECT, "");
    intent.putExtra(android.content.Intent.EXTRA_TEXT, "");
    intent.putExtra(Intent.EXTRA_STREAM, uri);
    try {
        startActivity(Intent.createChooser(intent, "Share Screenshot"));
    } catch (ActivityNotFoundException e) {
        Toast.makeText(context, "No App Available", Toast.LENGTH_SHORT).show();
    }
}

我希望你能从我的代码中得到启发.

I hope you will be inspired by my codes.

更新:

将以下权限添加到您的 AndroidManifest.xml 中:

Add below permissions into your AndroidManifest.xml:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

因为它创建和访问外部存储中的文件.

Because it creates and accesses files in external storage.

更新:

从 Android 7.0 Nougat 开始，禁止共享文件链接.要解决这个问题，您必须实现 FileProvider 并共享content://"uri 而不是file://"uri.

Starting from Android 7.0 Nougat sharing file links are forbiden. To deal with this you have to implement FileProvider and share "content://" uri not "file://" uri.

此处很好地说明了如何操作.

Here is a good description how to do it.

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