android - OnActivityResult 不使用 Picasso 更新 ImageView

Question

使用以下代码在ImageView中查看捕获的图像

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(this.requestCode == requestCode && resultCode == RESULT_OK) {  
            File imageFile = new File(Environment.getExternalStorageDirectory() + "/img.jpeg");             
            Picasso.with(MainActivity.this).load(imageFile).into(imageView);
        }
    }

问题: 我如何在 onActivityResult(...) 中刷新 ImageView 正如你所看到的，我正在使用上面的代码，但总是得到旧图像的预览，而我在里面得到新图像存储

Answer 1

您可以将以下代码行替换为它:-

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(this.requestCode == requestCode && resultCode == RESULT_OK) {  
        File imageFile = new   File(Environment.getExternalStorageDirectory() + "/img.jpeg");             
        Picasso.with(MainActivity.this)
        .load(imageFile)
        .memoryPolicy(MemoryPolicy.NO_CACHE)
        .networkPolicy(NetworkPolicy.NO_CACHE)
        .error(R.drawable.ic_lanucher)
        .noFade()
        .into(imageView)

    }
}