我花了几天的时间试图弄清楚凌空,最后设法找到了使用Method.POST的方法。我正在使用StringRequest将email_address参数传递给我的PHP。现在,它返回一个JSON字符串:
{"user_id":1,"email_address":"adminuser"}
但是,我无法使用常规的getString()方法提取数据。这给了我“无价值”的错误。这是我的代码。只是它的一部分:
// Login button
btnLogin = (Button) findViewById(R.id.btnLogin);
// Login button click event
btnLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String param = txtUsername.getText().toString();
postData(param);
}
});
}
/**
* Posting parameter
* */
private void postData(final String param) {
// Get username, password from EditText
String username = txtUsername.getText().toString();
String password = txtPassword.getText().toString();
// Check if username, password is filled
if(username.trim().length() > 0 && password.trim().length() > 0){
if(username.equals("adminuser") && password.equals("test")){
RequestQueue rq = Volley.newRequestQueue(this);
StringRequest postReq = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, response.toString());
try {
JSONObject person = new JSONObject();
String name = person.getString("user_id");
String email = person.getString("email_address");
//Store session
session.createLoginSession(name, email);
// Staring MainActivity
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
finish();
//}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("email_address", param);
return params;
}
};
rq.add(postReq);
}
}
}
我感觉是因为响应以String返回(我可能是错误的)。但是我尝试使用自定义请求gson,但是我使用post方法所做的任何操作均不起作用。 StringRequest是唯一实际返回内容的方法,但是现在,我无法从中提取数据。我想在会话中存储数据。
如果有人用我的Google搜寻并尝试了我能找到但无济于事的任何解决方案,那么如果有人能提供帮助,那将非常好。谢谢!
@Override
public void onResponse(String response) {
Log.d(TAG, response.toString());
try {
//Do it with this it will work
JSONObject person = new JSONObject(response);
String name = person.getString("user_id");
String email = person.getString("email_address");
//Store session
session.createLoginSession(name, email);
// Staring MainActivity
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
finish();
//}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}