我试图添加一个进度条来上传firebase上的文件.但不幸的是,它并不表示上传进度. logcat&进度条仅指示文件何时达到100％
uploadTask.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
@Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
double progress = 100.0 * (taskSnapshot.getBytesTransferred() / taskSnapshot.getTotalByteCount());
System.out.println("Upload is " + progress + "% done");
int currentprogress = (int) progress;
progressBar.setProgress(currentprogress);
}
}).addOnPausedListener(new OnPausedListener<UploadTask.TaskSnapshot>() {
@Override
public void onPaused(UploadTask.TaskSnapshot taskSnapshot) {
System.out.println("Upload is paused");
}
});
解决方法
更改进度计算中的术语分组以强制转换为浮动.正如你的代码现在,你正在划分两个长.除非getBytesTransferred()== getTotalByteCount(),否则除法的结果将为0,然后它将为1.
double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();
