Question

我想在对话框片段中显示进度对话框。

但是当我使用此代码时

ProgressDialog prog = new ProgressDialog(ctx);
prog.setTitle(getString(R.string.pleaseWait));
prog.setMessage(getString(R.string.webpage_being_loaded));       
prog.setCancelable(false);
prog.setIndeterminate(true);
prog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
prog.show();

进度对话框显示在调用dialogFragment的片段中，而不是在DialogFragment本身中。

我做错了什么？

Answer 1

你走了。

import android.app.Dialog;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;


public class ProgressDialogFragment extends DialogFragment
{
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setCancelable(false);
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState)
    {
        ProgressDialog dialog = new ProgressDialog(getActivity(), getTheme());
        dialog.setTitle(getString(R.string.pleaseWait));
        dialog.setMessage(getString(R.string.webpage_being_loaded));
        dialog.setIndeterminate(true);
        dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        return dialog;
    }
}

Answer 2

这是一个简单的加载对话框片段，它将gif作为动画可绘制的

public class LoadingDialogFragment extends DialogFragment {
    public static final String FRAGMENT_TAG = "LoadingFragment";
    private ImageView ivLoading;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.dialog_loading, container, false);

        if (rootView != null) {
            ivLoading = (ImageView) rootView.findViewById(R.id.iv_loading);
            ivLoading.setBackgroundResource(R.drawable.anim_drawable);
        }
        return rootView;
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = super.onCreateDialog(savedInstanceState);
        dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        return dialog;
    }

    @Override
    public void onStart() {
        super.onStart();
        Dialog dialog = getDialog();
        if (dialog != null) {
            dialog.getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
            dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

            AnimationDrawable loadingAnimation = (AnimationDrawable) ivLoading.getBackground();
            loadingAnimation.start();
        }
    }
}

你可以用以下方式显示和隐藏它：

 public void showLoadingDialog() {
      LoadingDialogFragment fragment = (LoadingDialogFragment) getSupportFragmentManager().findFragmentByTag(LoadingDialogFragment.FRAGMENT_TAG);
      if (fragment == null) {
         fragment = new LoadingDialogFragment();
         fragment.setCancelable(false);
         getSupportFragmentManager().beginTransaction()
                                    .add(fragment, LoadingDialogFragment.FRAGMENT_TAG)
                                    .commitAllowingStateLoss();

         // fragment.show(getSupportFragmentManager().beginTransaction(), LoadingDialogFragment.FRAGMENT_TAG);
      }
   }

   public void hideLoadingDialog() {
      LoadingDialogFragment fragment = (LoadingDialogFragment) getSupportFragmentManager().findFragmentByTag(LoadingDialogFragment.FRAGMENT_TAG);
      if (fragment != null) {
         // fragment.dismissAllowingStateLoss();
         getSupportFragmentManager().beginTransaction().remove(fragment).commitAllowingStateLoss();
      }
   }

编辑：顺便说一下，为网络等异步操作显示对话框片段并不是一个好习惯。

Answer 3

试试这个：

ProgressDialog prog = (ProgressDialog)your_view.findViewById(R.id.yourprogress_id);
prog.setTitle(getString(R.string.pleaseWait));
prog.setMessage(getString(R.string.webpage_being_loaded));       
prog.setCancelable(false);
prog.setIndeterminate(true);
prog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
prog.show();

或

如果动态使用ProgressDialog;

ProgressDialog prog= new ProgressDialog(getActivity());//Assuming that you are using fragments.
prog.setTitle(getString(R.string.pleaseWait));
prog.setMessage(getString(R.string.webpage_being_loaded));       
prog.setCancelable(false);
prog.setIndeterminate(true);
prog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
prog.show();

在加载数据时，

prog.dismiss();

现在，如果您的对话框中没有显示进度条，则必须设置自定义对话框并在该自定义对话框中定义进度条。

Answer 4

在对话框片段中使用ProgressBar。在xml代码中添加progressBar视图。

在您的代码中：

ProgressBar progressBar = view.findViewById(R.id.progress);
progressBar .show();

结束时：

 progressBar.hide();

Answer 5

我知道这是一个非常古老的帖子，但我想告诉解决方案。如果我没有错，您试图在progress dialog之前显示onStart lifecycle method。在progress dialog中显示onResume method。

Answer 6

在 DialogFragment 类

中的 onStart 方法中显示progressDialog

@Override
public void onStart() {
    super.onStart();
    ProgressDialog prog = new ProgressDialog(ctx);
    prog.setTitle(getString(R.string.pleaseWait));
    prog.setMessage(getString(R.string.webpage_being_loaded));       
    prog.setCancelable(false);
    prog.setIndeterminate(true);
    prog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    prog.show();
}

Answer 7

只需使用此类作为进度对话框即可。...

package com.microfinance.app.microfinance;

import android.app.ProgressDialog;
import android.support.annotation.VisibleForTesting;
import android.support.v4.app.Fragment;

/**
 * Created by USER on 9/18/2018.
 */

public class BaseFragment extends Fragment {
    @VisibleForTesting
    public ProgressDialog mProgressDialog;

    public void showProgressDialog() {
        if (mProgressDialog == null) {
            mProgressDialog = new ProgressDialog(this.getContext());
            mProgressDialog.setMessage("Loading ...");
            mProgressDialog.setIndeterminate(true);
        }

        mProgressDialog.show();
    }


    public void hideProgressDialog() {
        if (mProgressDialog != null && mProgressDialog.isShowing()) {
            mProgressDialog.dismiss();
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        hideProgressDialog();
    }
}

使用......

public class DialogFragment extends BaseFragment {...}

在DialogFragment中显示进度对话框

7 个答案: