android - 如何在 Android 中显示进度对话框？

Question

我想ProgressDialog在单击登录按钮时显示，移动到另一个页面需要时间。我怎样才能做到这一点？

score 106 · Accepted Answer

ProgressDialog pd = new ProgressDialog(yourActivity.this);
pd.setMessage("loading");
pd.show();

这就是你所需要的。

score 67 · Accepted Answer

您最好尝试使用AsyncTask

示例代码 -

private class YourAsyncTask extends AsyncTask<Void, Void, Void> {
    private ProgressDialog dialog;

    public YourAsyncTask(MyMainActivity activity) {
        dialog = new ProgressDialog(activity);
    }

    @Override
    protected void onPreExecute() {
        dialog.setMessage("Doing something, please wait.");
        dialog.show();
    }
    @Override
    protected Void doInBackground(Void... args) {
        // do background work here
        return null;
    }
    @Override
    protected void onPostExecute(Void result) {
         // do UI work here
        if (dialog.isShowing()) {
            dialog.dismiss();
        }
    }
}

在您的登录按钮活动中使用上述代码。而且，做的东西doInBackground和onPostExecute

更新：

ProgressDialog正如AsyncTask你所说，你的任务需要时间来处理。

更新：

ProgressDialog自 API 26 起，该类已被弃用

score 26 · Accepted Answer

要使用ProgressDialog以下代码

ProgressDialog progressdialog = new ProgressDialog(getApplicationContext());
progressdialog.setMessage("Please Wait....");

开始ProgressDialog使用

progressdialog.show();

progressdialog.setCancelable(false);使用，以便ProgressDialog在工作完成之前无法取消。

要停止ProgressDialog使用此代码（当您的工作完成时）：

progressdialog.dismiss();`

score 19 · Accepted Answer

关于进度对话框，您应该记住的第一点是您应该在单独的线程中运行它。如果您在 UI 线程中运行它，您将看不到任何对话框。

如果您是Android 线程新手，那么您应该了解AsyncTask。这可以帮助您实现无痛的 Threads。

示例代码

private class CheckTypesTask extends AsyncTask<Void, Void, Void>{
        ProgressDialog asyncDialog = new ProgressDialog(IncidentFormActivity.this);
        String typeStatus;


        @Override
        protected void onPreExecute() {
            //set message of the dialog
            asyncDialog.setMessage(getString(R.string.loadingtype));
            //show dialog
            asyncDialog.show();
            super.onPreExecute();
        }

        @Override
        protected Void doInBackground(Void... arg0) {

            //don't touch dialog here it'll break the application
            //do some lengthy stuff like calling login webservice

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            //hide the dialog
            asyncDialog.dismiss();

            super.onPostExecute(result);
        }

}

祝你好运。

score 7 · Accepted Answer

如下所示的简单编码activity：

private ProgressDialog dialog = new ProgressDialog(YourActivity.this);    
dialog.setMessage("please wait...");
dialog.show();
dialog.dismiss();

score 5 · Accepted Answer

声明你的进度对话框：

ProgressDialog progressDialog;

要启动进度对话框：

progressDialog = ProgressDialog.show(this, "","Please Wait...", true);

要关闭进度对话框：

 progressDialog.dismiss();

score 3 · Accepted Answer

ProgressDialog 现在已在 Android O 中正式弃用。我使用https://github.com/Q115/DelayedProgressDialog中的 DelayedProgressDialog 来完成工作。

用法：

DelayedProgressDialog progressDialog = new DelayedProgressDialog();
progressDialog.show(getSupportFragmentManager(), "tag");

score 2 · Accepted Answer

这是使用对话框的好方法

private class YourAsyncTask extends AsyncTask<Void, Void, Void> {

   ProgressDialog dialog = new ProgressDialog(IncidentFormActivity.this);

   @Override
    protected void onPreExecute() {
        //set message of the dialog
        dialog.setMessage("Loading...");
        //show dialog
        dialog.show();
        super.onPreExecute();
    }

   protected Void doInBackground(Void... args) {
    // do background work here
    return null;
   }

   protected void onPostExecute(Void result) {
     // do UI work here
     if(dialog != null && dialog.isShowing()){
       dialog.dismiss()
     }

  }
}

score 2 · Accepted Answer

当你调用 oncreate()

new LoginAsyncTask ().execute();

这里如何在流中使用..

ProgressDialog progressDialog;

  private class LoginAsyncTask extends AsyncTask<Void, Void, Void> {
  @Override
    protected void onPreExecute() {
        progressDialog= new ProgressDialog(MainActivity.this);
        progressDialog.setMessage("Please wait...");
        progressDialog.show();
        super.onPreExecute();
    }

     protected Void doInBackground(Void... args) {
        // Parsse response data
        return null;
     }

     protected void onPostExecute(Void result) {
        if (progressDialog.isShowing())
                        progressDialog.dismiss();
        //move activity
        super.onPostExecute(result);
     }
 }

score 1 · Accepted Answer

1

ProgressDialog dialog = 
   ProgressDialog.show(yourActivity.this, "", "Please Wait...");

于 2012-05-04T09:31:30.150 回答

score 1 · Accepted Answer

1

ProgressDialog pd = new ProgressDialog(yourActivity.this);
pd.show();

于 2015-04-18T07:46:43.307 回答

score 1 · Accepted Answer

步骤 1：创建 XML 文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">


    <Button
        android:id="@+id/btnProgress"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="Progress Dialog"/>
</LinearLayout>

第二步：创建一个 SampleActivity.java

package com.scancode.acutesoft.telephonymanagerapp;


import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class SampleActivity extends Activity implements View.OnClickListener {
    Button btnProgress;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnProgress = (Button) findViewById(R.id.btnProgress);
        btnProgress.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {

        final ProgressDialog progressDialog = new ProgressDialog(SampleActivity.this);
        progressDialog.setMessage("Please wait data is Processing");
        progressDialog.show();

//        After 2 Seconds i dismiss progress Dialog

        new Thread(){
            @Override
            public void run() {
                super.run();
                try {
                    Thread.sleep(2000);
                    if (progressDialog.isShowing())
                        progressDialog.dismiss();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }.start();
    }
}

score 1 · Accepted Answer

  final ProgressDialog loadingDialog = ProgressDialog.show(context,
     "Fetching BloodBank List","Please wait...",false,false);  // for  showing the 
    // dialog  where context is the current context, next field is title followed by
    // message to be shown to the user and in the end intermediate field
    loadingDialog.dismiss();// for dismissing the dialog

更多信息 Android - progressDialog.show() 和 ProgressDialog.show() 有什么区别？

score 1 · Accepted Answer

自 API 26 起已弃用 ProgressDialog

你仍然可以使用这个：

public void button_click(View view)
{
    final ProgressDialog progressDialog = ProgressDialog.show(Login.this,"Please Wait","Processing...",true);
}

score 1 · Accepted Answer

简单的方法：

ProgressDialog pDialog = new ProgressDialog(MainActivity.this); //Your Activity.this
pDialog.setMessage("Loading...!");
pDialog.setCancelable(false);
pDialog.show();

score 0 · Accepted Answer

        final ProgressDialog progDailog = ProgressDialog.show(Inishlog.this, contentTitle, "even geduld aub....", true);//please wait....

        final Handler handler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                Barcode_edit.setText("");
                showAlert("Product detail saved.");


            }

        };

        new Thread() {
            public void run() {
                try {
         } catch (Exception e) {

                }
                handler.sendEmptyMessage(0);
                progDailog.dismiss();
            }
        }.start();

score 0 · Accepted Answer

每当你想要ProgressDialog调用这个方法

    private void startLoader() {
    progress = new ProgressDialog(this);    //ProgressDialog
    progress.setTitle("Loading");
    progress.setMessage("Please wait");
    progress.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    progress.setCancelable(false);
    progress.show();
    new Thread(new Runnable() {
        public void run() {
            try {
                Thread.sleep(7000);
            } catch (Exception e) {
                e.printStackTrace();
            }
            progress.dismiss();
        }
    }).start();
}

android - 如何在 Android 中显示进度对话框？

17 回答 17

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