我嘗試使用布局創建自定義對話框。我還沒有在對話框中添加任何功能。目前，我正在嘗試通過從 MainActivity 中單擊 FAB 來啟動它。這是我的自定義對話框：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); } ...}這是我的MainActivity。我不知道我應該如何在onClick. 我嘗試使用意圖，但將對話框轉換為活動時出錯：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 } }); }}
3 回答
月關寶盒
TA貢獻1772條經驗 獲得超5個贊
完成類似的操作后，您的對話框類應該擴展 Dialog 而不是 Fragment。它應該是：public class GenerateDialog extends Dialog
然后在構造函數上膨脹它：
public class GenerateDialog extends Dialog {
public GenerateDialog(@NonNull Context context) {
super(context, android.R.style.Theme_NoTitleBar_Fullscreen);
setContentView(R.layout.dialog_layout);
}
…
}
在您的 FAB 偵聽器上，在您啟動對象后，您可以調用 show()（如果您的對象名為 generateDialog，則generateDialog.show();在實例化它后執行，因為它是顯示對話框所必需的）。
菲：
public class MainActivity extends AppCompatActivity {
...
GenerateDialog generateDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
generateDialog = new GenerateDialog(this);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
generateDialog.show();
}
});
}
}
守著一只汪
TA貢獻1872條經驗 獲得超4個贊
你可以像這樣顯示你的對話框
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();
}
像這樣稱呼它
CustomDialogSingleButton.dialog(context,
Constants.SYNC_FILES
, context.getResources().getString(R.string.sync_files_title),
context.getResources().getString(R.string.sync_files_msg), "OK");
只需嘗試此代碼，您的對話框就會出現
浮云間
TA貢獻1829條經驗 獲得超4個贊
對話框片段的代碼
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;
}
}
并從您的活動中調用此 MyCustomDialog ，如下所示，
MyCustomDialog dialog = new MyCustomDialog();
Bundle args = new Bundle();
FragmentTransaction ft = getFragmentManager().beginTransaction();
dialog.show(ft, MyCustomDialog.TAG);
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