我有一个带有自定义布局的对话框类。现在我想从不同的活动更改文本值和不同的按钮单击侦听器。我正在尝试这样做但出现错误。这是我的源代码。任何帮助或建议将非常感激。
public class MyDialog extends Dialog {
TextView dialogTitle, dialogMessage;
Button dialogCancel, dialogOk;
public MyDialog(@NonNull Context context) {
super(context);
}
@Override
public void dismiss() {
super.dismiss();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog_layout);
//..................REFERENCE
dialogTitle = (TextView) findViewById(R.id.txt_ttl);
dialogMessage = (TextView) findViewById(R.id.txt_msg);
dialogCancel = (Button) findViewById(R.id.btn_cancel_id);
dialogOk = (Button) findViewById(R.id.btn_ok_id);
//dialogTitle.setText("title has been changed");
}
private void dialogCancel(){
}
private void dialogOk(){
}
public void changeDialogTitle(String dTitle){
dialogTitle.setText(dTitle);
}
}
从我正在使用的其他活动中
...onCreate{...
MyDialog myDialog = new MyDialog(this);
}
// on button click show dialog
public void showDialog(View view) {
myDialog.changeDialogTitle("Title");
myDialog.show();
}
是的,也许您可以将标题作为参数传递
首先在 MyDialog 类中添加参数
public class MyDialog extends Dialog {
TextView dialogTitle, dialogMessage;
Button dialogCancel, dialogOk;
String title;
public MyDialog(@NonNull Context context, String title) {
super(context);
this.title = title;
}
@Override
public void dismiss() {
super.dismiss();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog_layout);
//..................REFERENCE
dialogTitle = (TextView) findViewById(R.id.txt_ttl);
dialogMessage = (TextView) findViewById(R.id.txt_msg);
dialogCancel = (Button) findViewById(R.id.btn_cancel_id);
dialogOk = (Button) findViewById(R.id.btn_ok_id);
// set your title in here
dialogTitle.setText(title);
}
private void dialogCancel(){
}
private void dialogOk(){
}
public void changeDialogTitle(String dTitle){
dialogTitle.setText(dTitle);
}
}
然后在你的 Activity 上调用这样的函数
MyDialog myDialog = new Mydialog(this,"My New Title");
myDialog.show
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