Java 如何使用FAB click显示自定义对话框?
我尝试创建一个带有布局的自定义对话框。我还没有在对话框中添加任何功能。目前,我正试图通过MainActivity的FAB点击来启动它 这是我的自定义对话框:Java 如何使用FAB click显示自定义对话框?,java,android,android-fragments,android-alertdialog,Java,Android,Android Fragments,Android Alertdialog,我尝试创建一个带有布局的自定义对话框。我还没有在对话框中添加任何功能。目前,我正试图通过MainActivity的FAB点击来启动它 这是我的自定义对话框: public class GenerateDialog extends Fragment implements DialogInterface.OnCancelListener, DialogInterface.OnDismissListener { @Nullable @Override public View
public class GenerateDialog extends Fragment implements DialogInterface.OnCancelListener, DialogInterface.OnDismissListener {
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.dialog_layout, container, false);
}
...
}
这是我的main活动。我不知道该如何启动onClick
中的对话框。我尝试使用intent,但将对话框强制转换为活动时出现错误:
public class MainActivity extends AppCompatActivity {
...
GenerateDialog generateDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
generateDialog = new GenerateDialog();
floatingActionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Show GenerateDialog
}
});
}
}
做了类似的事情之后,dialog类应该扩展dialog而不是片段。
它应该是:公共类GenerateDialog extends对话框
然后在构造器上充气:
public class GenerateDialog extends Dialog {
public GenerateDialog(@NonNull Context context) {
super(context, android.R.style.Theme_NoTitleBar_Fullscreen);
setContentView(R.layout.dialog_layout);
}
…
}
在FAB侦听器上,启动对象后,只需调用show()(f.i.如果对象名为generateDialog,则在实例化它之后执行generateDialog.show();
,这是显示对话框所必需的)
到岸价:
您可以这样显示您的对话框
public class CustomDialog extends Activity {
private static Context context;
private static Dialog dialog;
public static void dialog(final Context ctxt, final String calledBy,
String title, String message, String buttonText) {
context = ctxt;
if( dialog != null && dialog.isShowing() ) return;
dialog = new Dialog(context);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawableResource(R.color.transparent);
dialog.setCancelable(false);
dialog.setCanceledOnTouchOutside(false);
dialog.setContentView(R.layout.custom_dialog_single_button);
TextView txtTitle = dialog.findViewById(R.id.txtTitle);
TextView txtMessage = dialog.findViewById(R.id.txtMessage);
TextView tvOK = dialog.findViewById(R.id.tvOK);
txtTitle.setText(title);
txtMessage.setText(message);
tvOK.setText(buttonText);
dialog.show();
}
这样称呼它
CustomDialogSingleButton.dialog(context,
Constants.SYNC_FILES
, context.getResources().getString(R.string.sync_files_title),
context.getResources().getString(R.string.sync_files_msg), "OK");
只需尝试此代码,您的对话框就会出现对话框片段代码
public class MyCustomDialog extends DialogFragment{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(android.app.DialogFragment.STYLE_NORMAL, android.R.style.Theme_Black_NoTitleBar);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.dialog_view, container, false);
return v;
}
}
从下面的活动中调用此MyCustomDialog
MyCustomDialog dialog = new MyCustomDialog();
Bundle args = new Bundle();
FragmentTransaction ft = getFragmentManager().beginTransaction();
dialog.show(ft, MyCustomDialog.TAG);
自定义视图
并在“活动”中显示对话框:
从FAB的onclick方法调用showEditDialog()
方法
private void showEditDialog() {
FragmentManager fm = getSupportFragmentManager();
EditNameDialogFragment editNameDialogFragment = EditNameDialogFragment.newInstance("Some Title");
editNameDialogFragment.show(fm, "fragment_edit_name");
}
检查是否有任何理由从Fragment
扩展,也没有Dialog/DialogFragment…
为您的generatedalog
类DialogFragment
进行扩展,因此不推荐使用Dialog
,您的类不扩展Dialog
的任何理由?没有理由。这是我在阅读DialogFragment
时文档建议的。此外,请检查我的答案。您可以使用单个对话框,根据呼叫人和您的自定义消息显示它。我已经接受了某人的答案,但感谢您的努力。我给了你一票。如果您认为这是一个问得很好的问题,您也能支持我吗?请记住DialogFragment在API 28中已被弃用,您需要使用支持版本。
<!-- fragment_edit_name.xml -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/edit_name"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_gravity="center" android:orientation="vertical" >
<TextView
android:id="@+id/lbl_your_name" android:text="Your name"
android:layout_width="wrap_content" android:layout_height="wrap_content" />
<EditText
android:id="@+id/txt_your_name"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:inputType="text"
android:imeOptions="actionDone" />
</LinearLayout>
import android.support.v4.app.DialogFragment;
// ...
public class EditNameDialogFragment extends DialogFragment {
private EditText mEditText;
public EditNameDialogFragment() {
// Empty constructor is required for DialogFragment
// Make sure not to add arguments to the constructor
// Use `newInstance` instead as shown below
}
public static EditNameDialogFragment newInstance(String title) {
EditNameDialogFragment frag = new EditNameDialogFragment();
Bundle args = new Bundle();
args.putString("title", title);
frag.setArguments(args);
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_edit_name, container);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
// Get field from view
mEditText = (EditText) view.findViewById(R.id.txt_your_name);
// Fetch arguments from bundle and set title
String title = getArguments().getString("title", "Enter Name");
getDialog().setTitle(title);
// Show soft keyboard automatically and request focus to field
mEditText.requestFocus();
getDialog().getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
}
}
private void showEditDialog() {
FragmentManager fm = getSupportFragmentManager();
EditNameDialogFragment editNameDialogFragment = EditNameDialogFragment.newInstance("Some Title");
editNameDialogFragment.show(fm, "fragment_edit_name");
}