Java Code Examples for android.app.Activity#getExternalFilesDir()

public static void captureScreenshot(Activity activity, String subdir, String name)
{
    subdir = subdir.trim();
    if (!subdir.isEmpty() && !subdir.startsWith("/"))
    {
        subdir = "/" + subdir;
    }

    // saves to..
    //     SD card\Android\data\com.forrestguice.suntimeswidget\files\Pictures\test-screenshots\subdir
    File d = activity.getExternalFilesDir(DIRECTORY_PICTURES);
    if (d != null)
    {
        String dirPath = d.getAbsolutePath() + "/" + SCREENSHOT_DIR + subdir;

        File dir = new File(dirPath);
        boolean dirCreated = dir.mkdirs();

        String path = dirPath + "/" + name + ".png";
        File file = new File(path);
        if (file.exists())
        {
            boolean fileDeleted = file.delete();
            if (!fileDeleted) {
                Log.w("captureScreenshot", "Failed to delete file! " + path);
            }
        }

        try {
            Falcon.takeScreenshot(activity, file);
            MediaScannerConnection.scanFile(activity, new String[]{file.getAbsolutePath()}, null, null);

        } catch (Exception e1) {
            Log.e("captureScreenshot", "Failed to write file! " + e1);
        }
    } else {
        Log.e("captureScreenshot", "Failed to write file! getExternalFilesDir() returns null..");
    }
}
 

/**
 * 创建图片文件，名称不重复。
 * @remark 图片注解，比如crop就是裁剪图、compress就是压缩图
 */
private static File createImageFile(Activity activity, @Nullable String remark) {
    File imageFile = null;
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.CHINA).format(new Date());
    String imageFileName = "AVATAR" + timeStamp + remark;
    //应用内部目录
    File pictureDir = activity.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    if(pictureDir != null) {
        File storageDir = new File(pictureDir.getAbsolutePath() + "/pictures");
        try {
            imageFile = File.createTempFile(imageFileName, ".jpg", storageDir);
        } catch (IOException e) {
            Logger.e(e.getMessage());
        }
    }
    return imageFile;
}
 

/**
 * Intent方式截图处理
 */
public static void handleImgShot(Activity activity, Uri uri) {
    File file = new File(activity.getExternalFilesDir(Environment.DIRECTORY_PICTURES), System.currentTimeMillis() + ".jpg");
    String cropImagePath = file.getAbsolutePath();
    Intent intent = new Intent("com.android.camera.action.CROP");
    intent.setDataAndType(uri, "image/*");
    intent.putExtra("crop", "true");
    intent.putExtra("aspectX", 1);
    intent.putExtra("aspectY", 1);
    intent.putExtra("outputX", 500);
    intent.putExtra("outputY", 500);
    intent.putExtra("scale", true);
    intent.putExtra("scaleUpIfNeeded", true);
    intent.putExtra("return-data", false);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
    intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
    intent.putExtra("noFaceDetection", true);
    activity.startActivityForResult(intent, IMAGE_CROP_CODE);

}
 

public static File createImageFile(Activity activity, boolean saveToGallery) throws IOException {
    // Create an image file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    String imageFileName = "JPEG_" + timeStamp + "_";
    File storageDir;
    if(saveToGallery) {
        Log.d(getLogTag(), "Trying to save image to public external directory");
        storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    }  else {
        storageDir = activity.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    }

    File image = File.createTempFile(
            imageFileName,  /* prefix */
            ".jpg",         /* suffix */
            storageDir      /* directory */
    );

    return image;
}
 

/**
 * 获取应用外置储存路径
 */
public static String getExternalFilesDirPath(Activity activity) {
  File file = activity.getExternalFilesDir("");
  if (file != null) {
    return file.getPath();
  } else {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath();
    File appPath = new File(path + "Android/data/me.tvcfish.xposed.aidehelper/files");
    if (!appPath.exists()) {
      appPath.mkdirs();
    }
    return appPath.getPath();
  }
}
 

private void setFile(Activity activity) throws IOException {
    mImageName = TimeUtils.getNowString() + ".jpg";
    mImageFolder = activity.getExternalFilesDir(mNoteId);
    mImageFile = new File(mImageFolder, mImageName);

    checkImageFolder();
}
 

private File createImageFile(Activity activity) throws IOException {
    // Create an image file name
    String imageFileName = "IMG_" +
            new SimpleDateFormat("yyMMdd_HHmmss", Locale.getDefault()).format(new Date()) + "_";
    File storageDir = activity.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    File imageFile = File.createTempFile(
            imageFileName,  // prefix
            ".jpg",  // suffix
            storageDir      // directory
    );

    // Make sure directories exist.
    File path = imageFile.getParentFile();
    if (path != null) {
        path.mkdirs();
    }

    return imageFile;
}
 

/**
 * 获取临时文件
 *
 * @param context
 * @param photoUri
 * @return
 */
public static File getTempFile(Activity context, Uri photoUri) throws TException {
    String minType = getMimeType(context, photoUri);
    if (!checkMimeType(context, minType)) {
        throw new TException(TExceptionType.TYPE_NOT_IMAGE);
    }
    File filesDir = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    if (!filesDir.exists()) {
        filesDir.mkdirs();
    }
    File photoFile = new File(filesDir, UUID.randomUUID().toString() + "." + minType);
    return photoFile;
}