AlertBox应该等到用户单击“确定”以导航到另一个活动

Question

Iam使用此代码在需要时显示警报

 import android.app.Activity;
 import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class LoginSettingsActivity extends Activity implements OnClickListener {
EditText ipAddr, port;
Button save, cancel;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.server_settings);

    // Retrieving IP address and Port entered by user
    ipAddr = (EditText) findViewById(R.id.edit_ip_address);
    port = (EditText) findViewById(R.id.edit_portno);

    // If Already IP and Port entered and stored in our cache, then bring
    // that and display it
    String ipAddress = ((GlobalClass) LoginSettingsActivity.this
            .getApplication()).getServletIPAddress();
    String portno = ((GlobalClass) LoginSettingsActivity.this
            .getApplication()).getServletPort();
    if (ipAddress != null && ipAddress.length() > 0)
        ipAddr.setText(ipAddress);
    if (portno != null && portno.length() > 0)
        port.setText(portno);

    // After entering Servlet IP and port, submit action handled here. Just
    // storing IP and port in a global storage
    save = (Button) findViewById(R.id.save_server_settings);
    cancel = (Button) findViewById(R.id.cancel_server_settings);
    save.setOnClickListener(this);
    cancel.setOnClickListener(this);
}

@Override
public void onClick(View currentButton) {
    switch (currentButton.getId()) {
    case R.id.save_server_settings:
/*          EditText ipAddress = (EditText) findViewById(R.id.edit_ip_address);
        EditText portNo = (EditText) findViewById(R.id.edit_portno);*/
        //checking if ipadress and port is null or not
        if (ipAddr.length() <= 0 || port.length() <= 0) {
            // LoginAlertDialog("Please make sure IP Address and Port are not empty!",
            // false);

这里我从pojo类获取警告对话框

            ((GlobalClass) LoginSettingsActivity.this.getApplication())
                    .SettingsAlertDialog(
                            "Please make sure IP Address and Port are not empty!",
                            LoginSettingsActivity.this, false, null, null);
        } else {
            //Getting ipaddress from the user and setting it in the GlobalClass
            ((GlobalClass) LoginSettingsActivity.this.getApplication())
                    .setServletIPAddress(ipAddr.getText().toString());
            //Getting portno from the user and setting it in the GlobalClass
            ((GlobalClass) LoginSettingsActivity.this.getApplication())
                    .setServletPort(port.getText().toString());
            System.out.println("Inside setting IP and port "
                    + ipAddr.getText().toString() + " "
                    + port.getText().toString());
            // LoginAlertDialog("IP and Port set success!", true);
        /*  ((GlobalClass) LoginSettingsActivity.this.getApplication())
                    .SettingsAlertDialog("IP and Port set success!",
                            LoginSettingsActivity.this, true,
                            LoginSettingsActivity.this,
                            LoginValidation.class);*/

这里我在同一个活动中创建了警告对话框，两个都显示对话框，但在我按下确定并导航到另一个活动之前它会自动关闭。

   AlertDialog.Builder builder = new AlertDialog.Builder(LoginSettingsActivity.this);
            builder.setTitle("Settings").setMessage("IP and Port set success!").setCancelable(false)
                    .setNegativeButton("Ok", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {



                                Intent intent = new Intent(LoginSettingsActivity.this,
                                        LoginValidation.class);


                                // this addflags should be added, because we are
                                // starting new activity here from outside of the
                                // acutal caller activity.
                                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                                startActivity(intent);

                                dialog.dismiss();
                                finish();

                            }
                        });
            AlertDialog alert = builder.create();
            alert.show();



        }
    case R.id.cancel_server_settings:
        finish();

    }
}

@Override
protected void onDestroy() {

    super.onDestroy();
}

}

Global class只是一个设置和获取的pojo类。我尝试从pojo类调用警告对话框，我也在相同的活动中使用了alerrt对话框，但两者似乎都不起作用，对话框关闭，我得到窗口泄露消息。

如果用户不是用户名和密码，那么我有一个登录页面然后这个警告弹出，直到用户点击确定它不会消失，因为我需要保持在同一页面。（代码工作正常警报框保持到用户点击确定）

我在另一个活动中调用同一个对话框以保存一些全局值，单击“保存”后会出现相同的对话框，它应该等到用户单击“确定”，因为只有当用户单击“确定”时才会导航到另一个活动。

但是这里没有自动等待，它会导航到另一个活动

Answer 1

问题解决了，只是一个简单的错误，忘记在switch case语句中使用break，这里修改后的代码

@Override
public void onClick(View currentButton) {
switch (currentButton.getId()) {
case R.id.save_server_settings:
/*          EditText ipAddress = (EditText) findViewById(R.id.edit_ip_address);
    EditText portNo = (EditText) findViewById(R.id.edit_portno);*/
    //checking if ipadress and port is null or not
    if (ipAddr.length() <= 0 || port.length() <= 0) {
        // LoginAlertDialog("Please make sure IP Address and Port are not empty!",
        // false);
        ((GlobalClass) LoginSettingsActivity.this.getApplication())
                .SettingsAlertDialog(
                        "Please make sure IP Address and Port are not empty!",
                        LoginSettingsActivity.this, false, null, null);
    } else {
        //Getting ipaddress from the user and setting it in the GlobalClass
        ((GlobalClass) LoginSettingsActivity.this.getApplication())
                .setServletIPAddress(ipAddr.getText().toString());
        //Getting portno from the user and setting it in the GlobalClass
        ((GlobalClass) LoginSettingsActivity.this.getApplication())
                .setServletPort(port.getText().toString());
        System.out.println("Inside setting IP and port "
                + ipAddr.getText().toString() + " "
                + port.getText().toString());
        // LoginAlertDialog("IP and Port set success!", true);
    /*  ((GlobalClass) LoginSettingsActivity.this.getApplication())
                .SettingsAlertDialog("IP and Port set success!",
                        LoginSettingsActivity.this, true,
                        LoginSettingsActivity.this,
                        LoginValidation.class);*/
AlertDialog.Builder builder = new AlertDialog.Builder(LoginSettingsActivity.this);
        builder.setTitle("Settings").setMessage("IP and Port set success!").setCancelable(false)
                .setNegativeButton("Ok", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {



                            Intent intent = new Intent(LoginSettingsActivity.this,
                                    LoginValidation.class);


                            // this addflags should be added, because we are
                            // starting new activity here from outside of the
                            // acutal caller activity.
                            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                            startActivity(intent);

                            dialog.dismiss();
                            finish();

                        }
                    });
        AlertDialog alert = builder.create();
        alert.show();



    }
**break;**
case R.id.cancel_server_settings:
    finish();


}
}

@Override
protected void onDestroy() {

super.onDestroy();
}

}