Alert Dialog from within onOptionsItemSelected android

巧了我就是萌 提交于 2019-12-01 07:40:45

The following is directly from the app I'm currently working on. It brings up an AlertDialog which then takes the user to a different activity (after they enter a password). Please let me know if I can clarify anything about it.

Edit: whole method now included.

@Override
public boolean onOptionsItemSelected(MenuItem item) { 
    LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
    final int menuItem = item.getItemId();
    if ((menuItem == R.id.survey) || (menuItem == R.id.syncMode)) {
        View layout = inflater.inflate(R.layout.survey_password_dialog, (ViewGroup) findViewById(R.id.layout_root));
        final EditText password = (EditText) layout.findViewById(R.id.passwordText);
        AlertDialog.Builder builder = new AlertDialog.Builder(this);            
        builder.setView(layout)
        .setCancelable(false)
        .setPositiveButton("OK", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int id) {   
            }
        })
        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                dialog.cancel();
            }
        });
        final AlertDialog alertDialog = builder.create();
        alertDialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialog) {
                Button b = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
                b.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        if (password.getText().toString().equalsIgnoreCase("the_password")) {
                            if (menuItem == R.id.survey) {
                                Intent intent = new Intent(AsthmaAppActivity.this, SurveyActivity.class);
                                startActivity(intent);
                                alertDialog.dismiss();
                            }
                            else { //(menuItem == R.id.syncMode) 
                                startActivity(new Intent(AsthmaAppActivity.this, SyncMode.class));
                                alertDialog.dismiss();
                            }
                        }
                        else Toast.makeText(AsthmaAppActivity.this, "Password incorrect", Toast.LENGTH_LONG).show();
                    }
                });
            }
        });
        alertDialog.getWindow().setSoftInputMode (WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
        alertDialog.show();
    }
    else {  //dialog for setting application parameters "on the fly" for application testing
        View layout = inflater.inflate(R.layout.parameter_change, (ViewGroup) findViewById(R.id.layout_root));
        final EditText parameter = (EditText) layout.findViewById(R.id.parameterText);
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setView(layout)
        .setCancelable(false)
        .setPositiveButton("OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {  
                String parameterString = parameter.getText().toString();
                if(parameterString == null || parameterString.isEmpty()) {
                    testParam = 0.0;
                } 
                else {
                    testParam = Double.parseDouble(parameterString);
                }
            }
        })
        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                dialog.cancel();
            }
        })
        .show();
    }
    return(super.onOptionsItemSelected(item));
} 
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
alertbox.setPositiveButton("Yes" new OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    log("i'm clicked");
                }
            });
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