Save Multiple Files Without Replacing The One That Exists

I am trying to save multiple images in a particular folder first image is saving correctly but the next one just replaces the first one. How to save multiple images? How to give th

Solution 1:

You could use a counter variable in your Activity:

int counter = 0;

Append it in your file name and increment it after a successful save:

File savedPic = new File(picturesDir.getAbsolutePath() + "/mynewpic" + counter + ".jpg");

try {
    out = new FileOutputStream(savedPic);
    resizedBitmap.compress(Bitmap.CompressFormat.PNG, 100, out); // bmp is your Bitmap instance
    // PNG is a lossless format, the compression factor (100) is ignored

    counter++; // no exception thrown, increment the counter
} catch (Exception e) {
    e.printStackTrace();
}

You should use some sort of persistent storage to store the current value of the counter, such as SharedPreferences.

Or, instead of a counter you could just use some unique identifier, System.currentTimeMillis for example, so you don't have to deal with keeping track of the values.

Solution 2:

set the timestamp as ImageName so everytime it will save with different Name..

for add timestamp refer :here

Solution 3:

Using recursive call, it can be achieved easily. Below is the code.

/**
 * fileCount - to avoid overwrite and save file
 * with order ie - test - (1).pdf, test - (2).pdf
 */
fun savePdf(directoryPath: String, fileName: String, fileCount: Int = 0) {

    val newFileName = if (fileCount == 0) {
        "$fileName.pdf"
    } else {
        "$fileName - ($fileCount).pdf"
    }
    val targetFilePath = File(directoryPath, newFileName)

    if (targetFilePath.exists()) {
        savePdf(directoryPath, fileName, fileCount + 1)
        return
    }

    // add your logic to save file in targetFilePath
}

And call it like this in your code.

savePdf(directoryPath, fileName)