嗨，我是一个 android 新手，我已经被困了一个星期。任何帮助，将不胜感激！我做了很多研究，无法弄清楚什么是错的。我已经在两部手机上成功运行了蓝牙聊天示例代码，并通过蓝牙成功通信。我还成功编写并运行了一个独立应用程序，在单击主活动按钮后，会打开一个接受用户输入的自定义警报对话框，并将输入传递回主活动。但是当我将 alertdialog 代码写入 BluetoothChat 代码时，单击按钮时没有任何反应。我试图用手机单步调试调试器，但没有成功。它似乎没有进入包含按钮单击的代码。没有错误显示。为什么单击按钮时不会弹出警报对话框？这里'
public class BluetoothChat extends Activity implements OnClickListener{
final Context context = this;
private Button rButton;
View rScreen;
private EditText mAlertDialog;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(D) Log.e(TAG, "+++ ON CREATE +++");
// Set up the window layout
setContentView(R.layout.main);
// Get local Bluetooth adapter
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
// If the adapter is null, then Bluetooth is not supported
if (mBluetoothAdapter == null) {
Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
finish();
return;
}
//components from main.xml
//When button is clicked, the alert dialog is pulled up
rButton = (Button)findViewById(R.id.buttonr);
mAlertDialog = (EditText)findViewById(R.id.edittextresultm);
//add button listener
rButton.setOnClickListener(new OnClickListener() {
//@Override
public void onClick_register(View view) {
String title = "title";
String buttonOk = "OK";
String buttonCancel = "Cancel";
String madd, name;
//get review.xml view
LayoutInflater li = LayoutInflater.from(context);
View rView = li.inflate(R.layout.review, null);
//AlertDialog dialog;
AlertDialog.Builder adRegister = new AlertDialog.Builder(context);
//set review.xml to adRegister builder
adRegister.setView(rView);
//set title
adRegister.setTitle(title);
//Set EditText views to get user input
final EditText mField = (EditText)rView.findViewById(R.id.editTextm);
final EditText nField = (EditText)rView.findViewById(R.id.editTextn);
//set dialog message
adRegister.setMessage("Message")
.setCancelable(false)
.setPositiveButton(buttonOk, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
String madd = mField.getText().toString();
String name = nField.getText().toString();
//get user input and set it to result on main activity
mAlertDialog.setText(mField.getText());
}
})
.setNegativeButton(buttonCancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
//if this button is clicked, close current activity
dialog.cancel();
}
});
//Create alert dialog
AlertDialog alertDialog = adRegister.create();
//dialog= adRegister.create();
//show it
adRegister.show();
//dialog.show();
}
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
});
}
}