Example usage for android.widget LinearLayout getRootView

Introduction

In this page you can find the example usage for android.widget LinearLayout getRootView.

Prototype

public View getRootView() 

Source Link

Document

Finds the topmost view in the current view hierarchy.

Usage

From source file:org.drrickorang.loopback.LoopbackActivity.java

/** Save a screenshot of the main activity. */
void saveScreenShot(Uri uri) {
    ParcelFileDescriptor parcelFileDescriptor = null;
    FileOutputStream outputStream;
    try {/*from ww  w.  j a v  a2s. co  m*/
        parcelFileDescriptor = getApplicationContext().getContentResolver().openFileDescriptor(uri, "w");

        FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
        outputStream = new FileOutputStream(fileDescriptor);

        log("Done creating output stream");

        LinearLayout LL = (LinearLayout) findViewById(R.id.linearLayoutMain);

        View v = LL.getRootView();
        v.setDrawingCacheEnabled(true);
        Bitmap b = v.getDrawingCache();

        //save
        b.compress(Bitmap.CompressFormat.PNG, 100, outputStream);
        parcelFileDescriptor.close();
        v.setDrawingCacheEnabled(false);
    } catch (Exception e) {
        log("Failed to open png file " + e);
    } finally {
        try {
            if (parcelFileDescriptor != null) {
                parcelFileDescriptor.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
            log("Error closing ParcelFile Descriptor");
        }
    }
}

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