Question

我有一个带有两个按钮的片段。我已经实现了view.OnclickListener方法，并在两个按钮上都设置了onclickistener：

    btn_password = (ImageButton) v.findViewById(R.id.btn_password);
    btnEditar = (Button) v.findViewById(R.id.btnEditar);

    btn_password.setOnClickListener(this);
    btnEditar.setOnClickListener(this);

然后我实现了onclick方法：

  @Override
    public void onClick(View view) {
        Fragment fragment = null;
        switch (view.getId()) {
            case R.id.btnEditar:


                registerUser(empresa,nombre,direccion,cif,tel,cuenta,id );
                break;

            case R.id.btn_password:

                Log.d(TAG, "Register Response: id" + "clicked Change Password" );
                Intent intent1 = new Intent(getActivity(), CambiarPasswordActivity.class);
                startActivity(intent1);
                break;



        }
    }

要检查是否单击了btn_password，我提供了一条日志，用于确认单击了按钮。

我的问题是，意图不是启动活动，而是打开MainActivity，这是保存当前片段的活动。

欢迎任何帮助

编辑

CambiarPassword活动代码

public class CambiarPasswordActivity extends AppCompatActivity {

    private static final String URL = "https://.../update_password.php";
    public static final String USERNAME = "username";
    public static final String USERID = "unique_id";

    private String user_uid,pass, pass2,usuario;
    ProgressDialog progreso;
private TextView userName;
    private SQLiteHandler db;
    private SessionManager session;
    private ProgressDialog loading;
    private EditText password, password2;
    public static String MISDATOS= "MisDatos";
    private Button button;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_cambiar_password);
        Log.d("CAMBIAR", "Register Response: id" + "clicked Change Password ESTOY EN CAMBIAR PASSWORD" );
        password=(EditText) findViewById(R.id.password);
        password2=(EditText) findViewById(R.id.password2);
        button = (Button) findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                pass = password.getText().toString().trim();
                pass2 = password2.getText().toString().trim();
                SharedPreferences prefs2 =
                        getSharedPreferences(MISDATOS, Context.MODE_PRIVATE);





                usuario = prefs2.getString("ID", "por_defecto@email.com");

                if(TextUtils.isEmpty(pass) || pass.length() < 6)
                {
                    Toast.makeText(getApplicationContext(),
                            "Password too short, at least 6 characters!", Toast.LENGTH_LONG)
                            .show();
                    return;
                }
                if(TextUtils.isEmpty(pass2) || pass2.length() < 6)
                {
                    Toast.makeText(getApplicationContext(),
                            "Password too short, at least 6 characters!", Toast.LENGTH_LONG)
                            .show();
                    return;
                }

                if (pass.equals(pass2) ){
                    Log.d("datis","CAMBIO "+pass+" "+usuario);
                    SendData();
                }
                else{
                    Toast.makeText(CambiarPasswordActivity.this,"Passwords don´t match",Toast.LENGTH_LONG).show();
                }

            }
        });

        // SqLite database handler
        db = new SQLiteHandler(getApplicationContext());

        // session manager
        session = new SessionManager(getApplicationContext());

        if (!session.isLoggedIn()) {
            logoutUser();
        }






    }





    private void logoutUser() {
        session.setLogin(false);

        db.deleteUsers();

        // Launching the login activity
        Intent intent = new Intent(CambiarPasswordActivity.this, LoginActivity.class);
        startActivity(intent);
        //finish();
    }
    public void SendData()
    {

        progreso = ProgressDialog.show(this, "Changing Password",
                "Please, wait...", true);


        StringRequest stringRequest = new StringRequest(Request.Method.POST, URL,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        System.out.println(response);
                        Log.d("datis","CAMBIO "+response);
                        Toast.makeText(CambiarPasswordActivity.this,response,Toast.LENGTH_LONG).show();
                        progreso.dismiss();
                        Intent intent = new Intent(CambiarPasswordActivity.this,
                                MainActivity.class);
                        startActivity(intent);
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(CambiarPasswordActivity.this,error.toString(),Toast.LENGTH_LONG).show();
                    }
                }){
            @Override
            protected Map<String,String> getParams(){
                Map<String,String> params = new HashMap<String, String>();
                params.put("password",pass);
                params.put("usuario", usuario);
                return params;
            }

        };

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(stringRequest);
    }

}

Answer 1

尝试这个。

@Override
    public void onClick(View view) {
        Fragment fragment = null;
        switch (view.getId()) {
            case R.id.btnEditar:


                registerUser(empresa,nombre,direccion,cif,tel,cuenta,id );
                break;

            case R.id.btn_password:

                Log.d(TAG, "Register Response: id" + "clicked Change Password" );
                Intent intent1 = new Intent(getActivity(), CambiarPasswordActivity.class);
                getActivity().startActivity(intent1);
                break;



        }
    }

Answer 2

所以实际的问题是

 if (!session.isLoggedIn()) {
        logoutUser();
    }

由于logoutUser()返回

，您的session.isLoggedIn()方法正在执行

false。由于上述if条件满足，并且您从logoutUser()到Launching Intent就是LoginActivity。

这会成为问题，因此您需要根据自己的要求处理session.isLoggedIn()。

谢谢

Answer 3

尝试一下：

在保存片段（MainActivity）的活动中，创建一个启动CambiarPasswordActivity并将其设置为public的方法。

MainActivity.class

public void launchCambiarPasswordActivity(){
    startActivity(new Intent(this, CambiarPasswordActivity.class));
}

2。并从片段中调用此方法：

YourFragment.class

@Override
public void onClick(View view) {
    Fragment fragment = null;
    switch (view.getId()) {
        case R.id.btnEditar:
            registerUser(empresa,nombre,direccion,cif,tel,cuenta,id );
            break;
        case R.id.btn_password:
            Log.d(TAG, "Register Response: id" + "clicked Change Password" );
            // Call the new method.
            ((MainActivity) getActivity()).launchCambiarPasswordActivity();
            break;
    }
}

活动未从片段内部启动

3 个答案: