如何解决在 Android 中意外单击按钮时 API 被调用两次
当我按下应用程序中的上传按钮时,从字符串 URL 调用的 API 会执行两次。如何正确处理行为,以便 API 仅在单击时执行一次?
这是活动代码:
公共类 UserLoggedInActivity 扩展 AppCompatActivity {
private static final int SELECT_PICTURE = 100;
Button logout,upload,selectimage;
ImageView imageView;
EditText productName,productPrice;
Uri uri;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_logged_in);
logout = findViewById(R.id.logout);
upload = findViewById(R.id.upload);
imageView = findViewById(R.id.image);
productName = findViewById(R.id.productName);
productPrice = findViewById(R.id.productPrice);
selectimage = findViewById(R.id.selectimage);
logout.setonClickListener(v -> {
FirebaseAuth.getInstance().signOut();
Toast.makeText(UserLoggedInActivity.this,"Successfully Logged out",Toast.LENGTH_SHORT).show();
startActivity(new Intent(UserLoggedInActivity.this,UserLoginActivity.class));
});
selectimage.setonClickListener(v -> {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"),SELECT_PICTURE);
});
upload.setonClickListener(v -> {
String pName = productName.getText().toString();
String pPrice = productPrice.getText().toString();
Log.e("REAL_PATH: ","The pseudo value is: " + uri.getPath());
String URL = "http://192.168.1.12:8080/storeProductInfo?file=" + new File("/Users/guppranj/Desktop/download.jpeg")
+ "&&name=" + pName + "&&price=" + pPrice;
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(URL,null,response -> Log.e("INFO",response.toString()),null);
requestQueue.add(jsonObjectRequest);
Toast.makeText(UserLoggedInActivity.this,"Product Info saved successfully",Toast.LENGTH_SHORT).show();
productName.getText().clear();
productPrice.getText().clear();
imageView.setimageResource(android.R.color.transparent);
});
}
@Override
public void onActivityResult(int requestCode,int resultCode,Intent resultData) {
super.onActivityResult(requestCode,resultCode,resultData);
if (requestCode == SELECT_PICTURE && resultCode == Activity.RESULT_OK) {
if (resultData != null) {
uri = resultData.getData();
imageView.setimageURI(uri);
}
}
}
解决方法
如何尝试在点击按钮后禁用该按钮,然后执行上传,一旦您收到返回结果,您就可以启用它。
upload.setOnClickListener(v -> {
v.setEnabled(false);
String pName = productName.getText().toString();
String pPrice = productPrice.getText().toString();
Log.e("REAL_PATH: ","The pseudo value is: " + uri.getPath());
String URL = "http://192.168.1.12:8080/storeProductInfo?file=" + new File("/Users/guppranj/Desktop/download.jpeg")
+ "&&name=" + pName + "&&price=" + pPrice;
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(URL,null,response -> Log.e("INFO",response.toString()),null);
requestQueue.add(jsonObjectRequest);
Toast.makeText(UserLoggedInActivity.this,"Product Info saved successfully",Toast.LENGTH_SHORT).show();
productName.getText().clear();
productPrice.getText().clear();
imageView.setImageResource(android.R.color.transparent);
v.setEnabled(true);
});
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