只要访客关闭标签，此代码就会向他们显示一条消息：
window.onbeforeunload = function() {
return "Are you sure you want to leave?";
}
但是，这是我无法使用的代码：
window.onbeforeunload = function() {
window.location.replace("http://www.example.com");
}
为什么当访问者关闭标签时，此代码不会将访问者重定向到example.com？有什么解决办法吗？
答案 0 :(得分：0)
使用规范的 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// handle result of CropImageActivity
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
((ImageView) findViewById(R.id.quick_start_cropped_image)).setImageURI(result.getUri());
Toast.makeText(
this, "Cropping successful, Sample: " + result.getSampleSize(), Toast.LENGTH_LONG)
.show();
textScratch = (TextView) this.findViewById(R.id.textView);
detector = new TextRecognizer.Builder(this).build();
try{
InputStream stream = getContentResolver().openInputStream(data.getData());
Bitmap bitmap = BitmapFactory.decodeStream(stream);
stream.close();
if (detector.isOperational() && null !=bitmap){
Frame frame = new Frame.Builder().setBitmap(bitmap).build();
SparseArray<TextBlock> textBlocks = detector.detect(frame);
StringBuilder sb = new StringBuilder();
for (int i=0; i< textBlocks.size(); ++i){
TextBlock tb = textBlocks.get(i);
sb.append(tb.getValue());
}
if (textBlocks.size() ==0){
textScratch.setText("Scan failed");
}else{
textScratch.setText(sb.toString());
}
}else{
textScratch.setText("Invalid image");
}
}catch (Exception e){
textScratch.setText("Problem encored");
}
}else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Toast.makeText(this, "Cropping failed: " + result.getError(), Toast.LENGTH_LONG).show();
}
}
}
属性代替使用Msgbox "Hi there " & Environ("USERNAME"), vbInformation, "Greetings"
：
location.replace()