目前正在研究小型应用程序以自我介绍。我需要捕获图像,在imageview上显示它并上传它。我已经设法创建了该意图并在imageview上显示了图像,但目前无法上传它,也无法弄清楚该怎么办?也有从图库上传图像的按钮。我应该使用Asynctask吗?我迷路了
相机意图:
mCapture.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent cameraIntent = new Intent (MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, REQUEST_CAMERA_CAPTURE);
}
});
图片上传:
private void UploadImage (){
StringRequest stringRequest = new StringRequest(Request.Method.POST, UploadUrl,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
String Response = jsonObject.getString("response");
Toast.makeText(MainActivity.this,Response,Toast.LENGTH_SHORT).show();
mImageView.setImageResource(0);
mImageView.setVisibility(View.GONE);
mEditText.setText("");
mEditText.setVisibility(View.GONE);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
})
{
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
params.put("name1",mEditText.getText().toString().trim());
params.put("name2", staticSpinner.getSelectedItem().toString().trim());
params.put("image",ImageToString(bitmap));
return params;
}
};
图片到字符串
private String ImageToString(Bitmap bitmap){
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 25, byteArrayOutputStream);
byte [] imgBytes = byteArrayOutputStream.toByteArray();
return Base64.encodeToString(imgBytes, Base64.DEFAULT);
}
答案 0 :(得分:0)
您应该上传图像的字节数组,下面是将位图转换为字节数组的代码。
Bitmap bmp = intent.getExtras().get("data"); // your image bitmap
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray(); send this b
bmp.recycle(); // recycle your bitmap