我刚刚完成使用 volley 登录和注册屏幕的代码
但是在模拟器中运行时我收到此错误
java.lang.NoSuchMethodError: No virtual method setTag(Ljava/lang/Object;)Lcom/android/volley/Request; in class Lcom/android/volley/Request; or its super classes (declaration of 'com.android.volley.Request' appears in /data/app/com.dreacot.street_crime-2/split_lib_dependencies_apk.apk:classes10.dex)
根据调试，这些是有问题的文件
请谁能告诉我我做错了什么？
AppController.java
public class AppController extends Application {
public static final String TAG = AppController.class.getSimpleName();
private RequestQueue mRequestQueue;
private static AppController mInstance;
@Override
public void onCreate() {
super.onCreate();
mInstance = this;
}
public static synchronized AppController getInstance() {
return mInstance;
}
public RequestQueue getRequestQueue() {
if (mRequestQueue == null) {
mRequestQueue = Volley.newRequestQueue(getApplicationContext());
}
return mRequestQueue;
}
public <T> void addToRequestQueue(Request<T> req, String tag) {
req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);
getRequestQueue().add(req);
}
public <T> void addToRequestQueue(Request<T> req) {
req.setTag(TAG);
getRequestQueue().add(req);
}
public void cancelPendingRequests(Object tag) {
if (mRequestQueue != null) {
mRequestQueue.cancelAll(tag);
}
}
}
SignUpActivity.java
public class SignupActivity extends Activity {
private static final String TAG = SignupActivity.class.getSimpleName();
Button regbutton;
private EditText inputFullName;
private EditText inputEmail;
private EditText inputPassword;
private SessionManager session;
private SQLiteHandler db;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set View to register.xml
setContentView(R.layout.activity_register);
inputFullName = (EditText) findViewById(R.id.reg_username);
inputEmail = (EditText) findViewById(R.id.reg_email);
inputPassword = (EditText) findViewById(R.id.reg_password);
// Session manager
session = new SessionManager(getApplicationContext());
// SQLite database handler
db = new SQLiteHandler(getApplicationContext());
// Check if user is already logged in or not
if (session.isLoggedIn()) {
// User is already logged in. Take him to main activity
Intent intent = new Intent(SignupActivity.this,
AfterLogin.class);
startActivity(intent);
finish();
}
addListenerOnButton();
TextView loginScreen = (TextView) findViewById(R.id.link_to_login);
// Listening to Login Screen link
loginScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
// Closing registration screen
// Switching to Login Screen/closing register screen
finish();
}
});
}
public void addListenerOnButton() {
regbutton = (Button) findViewById(R.id.btnRegister);
regbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
String name = inputFullName.getText().toString().trim();
String email = inputEmail.getText().toString().trim();
String password = inputPassword.getText().toString().trim();
if (!name.isEmpty() && !email.isEmpty() && !password.isEmpty()) {
registerUser(name, email, password);
} else {
Toast.makeText(getApplicationContext(),
"Please enter your details!", Toast.LENGTH_LONG)
.show();
}
}
});
}
/**
* Function to store user in MySQL database will post params(tag, name,
* email, password) to register url
* */
private void registerUser(final String name, final String email,
final String password) {
// Tag used to cancel the request
String tag_string_req = "req_register";
StringRequest strReq = new StringRequest(Method.POST,
AppConfig.URL_REGISTER, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response.toString());
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
// User successfully stored in MySQL
// Now store the user in sqlite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String email = user.getString("email");
String created_at = user
.getString("created_at");
// Inserting row in users table
db.addUser(name, email, uid, created_at);
Toast.makeText(getApplicationContext(), "User successfully registered. Try login now!", Toast.LENGTH_LONG).show();
// Launch login activity
Intent intent = new Intent(
SignupActivity.this,
LoginActivity.class);
startActivity(intent);
finish();
} else {
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("name", name);
params.put("email", email);
params.put("password", password);
return params;
}
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
}
日志
06-05 15:38:27.457 28919-28919/com.dreacot.street_crime E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.dreacot.street_crime, PID: 28919
java.lang.NoSuchMethodError: No virtual method setTag(Ljava/lang/Object;)Lcom/android/volley/Request; in class Lcom/android/volley/Request; or its super classes (declaration of 'com.android.volley.Request' appears in /data/app/com.dreacot.street_crime-2/split_lib_dependencies_apk.apk:classes10.dex)
at com.dreacot.street_crime.app.AppController.addToRequestQueue(AppController.java:37)
at com.dreacot.street_crime.other.SignupActivity.registerUser(SignupActivity.java:181)
at com.dreacot.street_crime.other.SignupActivity.access$300(SignupActivity.java:31)
at com.dreacot.street_crime.other.SignupActivity$2.onClick(SignupActivity.java:94)
at android.view.View.performClick(View.java:5610)
at android.view.View.onKeyUp(View.java:10581)
at android.widget.TextView.onKeyUp(TextView.java:6435)
at android.view.KeyEvent.dispatch(KeyEvent.java:2700)
at android.view.View.dispatchKeyEvent(View.java:9880)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1667)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1667)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1667)
at android.widget.ScrollView.dispatchKeyEvent(ScrollView.java:379)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1667)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1667)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1667)
at com.android.internal.policy.DecorView.superDispatchKeyEvent(DecorView.java:403)
at com.android.internal.policy.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1800)
at android.app.Activity.dispatchKeyEvent(Activity.java:3021)
at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:317)
at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:4327)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4298)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3849)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3902)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3868)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3995)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3876)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4052)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3849)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3902)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3868)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3876)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3849)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6210)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6184)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6145)
at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:3647)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
最佳答案
我的 gradle 依赖项中有两个 Volley 依赖项，所以我想这就是导致这一切的原因
compile 'com.mcxiaoke.volley:library:1.0.19'
compile 'com.mcxiaoke.volley:library-aar:1.0.0'
我刚刚把这个拿出来了
compile 'com.mcxiaoke.volley:library:1.0.19'
现在一切正常
关于java.lang.NoSuchMethodError : No virtual method setTag(Ljava/lang/Object;)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44370743/