最近想给一个APP添加分享屏幕截图的功能，就尝试找了一圈相关的Package，最后找倒是没找到，倒是在StackOverflow找到了一个解决方法。

• https://stackoverflow.com/questions/30196965/how-to-take-a-screenshot-of-a-current-activity-and-then-share-it

布局及相关权限

• AndroidManifest.xml权限添加

<!--    STORAGE PERMISSION FOR SCREEN SHOT-->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />

• 存储路径配置provider_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path name="external_files" path="."/>
</paths>

• 布局

...
<LinearLayout android:id="@+id/shared_preferences_container"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:background="#7E03A9F4">
    <TextView android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:textAlignment="center"
              android:layout_weight="10"
              android:text="@string/share_info"/>
    <Button android:id="@+id/share"
            android:background="@drawable/ic_share"
            android:layout_weight="1"
            android:layout_width="32dp"
            android:layout_height="32dp"
            android:layout_marginRight="10dp"/>
</LinearLayout>
...

Code

• 主要引用

...
Button share = (Button) findViewById(R.id.share);
share.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Bitmap bitmap = takeScreenshot(gameWeb);
        saveBitmap(bitmap);
        shareIt(GameActivity.this);
    }
});
...

• 截图

public Bitmap takeScreenshot(View v) {
    View rootView = findViewById(android.R.id.content);
    Bitmap bitmap = Bitmap.createBitmap(rootView.getWidth(),
                                        rootView.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    rootView.draw(canvas);
    return bitmap;
}

• 存图

public void saveBitmap(Bitmap bitmap) {
    Date dNow = new Date( );
    SimpleDateFormat ft = new SimpleDateFormat("yyyyMMddhhmmss");
    imagePath = new File(Environment.getExternalStorageDirectory() + "/DCIM/Share_"+ft.format(dNow)+".png");
    if (!imagePath.exists()) {
        Log.d("path", imagePath.toString());
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(imagePath);
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
            fos.flush();
            fos.close();
        } catch (FileNotFoundException e) {
            Log.e("GREC", e.getMessage(), e);
        } catch (java.io.IOException e) {
            e.printStackTrace();
            Log.e("GREC", e.getMessage(), e);
        }

    }
}

• 分享

private void shareIt (Context context){
    Uri uri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", imagePath);
    Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
    sharingIntent.setType("image/*");
    String shareBody = getString(R.string.shareBody);
    sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, getString(R.string.Score));
    sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
    sharingIntent.putExtra(Intent.EXTRA_STREAM, uri);
    startActivity(Intent.createChooser(sharingIntent, getString(R.string.share_via)));
}

参考

• https://stackoverflow.com/questions/30196965/how-to-take-a-screenshot-of-a-current-activity-and-then-share-it