标签: android-progressbar

我正在使用android中的ProgressBar类,但是我无法在5秒内完成它并加载应用程序.一切正常但进度条没有进展.这是代码.

public class StartPoint extends Activity{

ProgressBar progressBar;
private int progressBarStatus = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.splash);

    progressBar = (ProgressBar)findViewById(R.id.progressBar1);


    Thread timer = new Thread(){
        public void run(){
            try{
                sleep(5000);
                while(progressBarStatus < 5000){
                    progressBar.setProgress(progressBarStatus);
                    progressBarStatus += 1000;

                }
            }catch(InterruptedException e){
                e.printStackTrace();
            }finally{
                Intent openMainList = new Intent(StartPoint.this, in.isuru.caf.MainList.class);
                startActivity(openMainList);
            }
        }
    };
    timer.start();
}

protected void onPause(){
    super.onPause();
    finish();
}

}

这是布局文件splash.xml

<?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" > …

我想在android中创建一个像该图像一样的进度条

我尝试使用

<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/loadingicon"
android:pivotX="50%"
android:pivotY="50%" />

但我认为它不符合我的要求

我有一个按钮,按下后,执行以下代码:

public void onClick(View v) {
            // TODO Auto-generated method stub
            //progressSpin.setVisibility(View.VISIBLE);
            try {
                data=new WebkioskExtractor().execute(username,password).get();
                System.out.println("Data = "+data);                 
            } catch (Exception e) {
                // TODO Auto-geneorated catch block
                e.printStackTrace();
            }
            //progressSpin.setVisibility(View.GONE);
        }

从代码中清楚,我必须等待AsyncTask完成,因为我依赖于它返回的数据.问题是,当执行任务(从互联网上获取一些数据)时,按钮仍处于按下状态.即使我将我创建的进度条设置为VISIBLE,也不会显示.

我怎样才能解决这个问题？我希望按下按钮一次,然后进度条应该开始旋转,这不会发生.

我希望这将是一个我想念的傻事,但我一直在敲击键盘试图弄清楚我哪里出错了.

我正在尝试从新线程中的DownloadManager更新ProgressBar.这是正常工作,直到中途,ProgressBar重新开始重新开始.从输入一些调试代码,我已将问题隔离到这一行:

final int dl_progress = (bytes_downloaded*100)/bytes_total;

dl_progress正在通过文件下载中途转为负面!下面的相关代码块和日志输出:

    @Override
    public void run() {

        boolean downloading = true;

        while (downloading) {

            DownloadManager.Query q = new DownloadManager.Query();
            q.setFilterById(downloadId);

            Cursor cursor = manager.query(q);
            cursor.moveToFirst();
            int bytes_downloaded = cursor.getInt(cursor
                    .getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
            int bytes_total = cursor.getInt(cursor
                    .getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));

            if (cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {
                downloading = false;
                getActivity().runOnUiThread(new Runnable() {
                    public void run() {
                        mProgressBar.setVisibility(View.INVISIBLE);
                    }
                });
            }

            final int dl_progress = (bytes_downloaded*100)/bytes_total;

            Log.d("Download", bytes_downloaded + " of " + bytes_total + " (" + dl_progress + …

我有一个WebView,可以很好地加载URL.我已经获得了一个WebViewClient并扩展了onProgressChanged,但据我所知,它没有被调用.有任何想法吗？

 wv.setWebViewClient(new WebViewClient(){

        public void onProgressChanged(final WebView view, final int newProgress) {
            Log.e("APPNAME", String.valueOf(newProgress));
            if (newProgress < 100 && progressBar.getVisibility() == ProgressBar.GONE){
                progressBar.setVisibility(ProgressBar.VISIBLE);
            }
            progressBar.setProgress(newProgress);
            progressTxt.setText(newProgress);
            if (newProgress == 100){
                progressBar.setVisibility(ProgressBar.GONE);
            }
        }

        public void onReceivedError(WebView view, int errorCode, String description, String failingUrl){
             InputStream is = null;
             byte[] buffer = null;
                try {
                    is = getAssets().open("error.html");
                    int size = 0;
                    size = is.available();
                    buffer = new byte[size];
                    is.read(buffer);
                    is.close();
                }
                catch(Exception e){

                }
                String str = new String(buffer);
                str = …

我已经开发了一个具有一个Web视图和一个进度条的应用程序,所以我想在加载网页的进度条中添加显示进度等功能,以便它如何实现我有我放在这里的代码.

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        web = (WebView) findViewById(R.id.web);
        progressBar = (ProgressBar) findViewById(R.id.progrss);

        web.setWebViewClient(new myWebClient());
        web.getSettings().setJavaScriptEnabled(true);
        web.loadUrl("http://www.technotalkative.com");
    }

    public class myWebClient extends WebViewClient {



        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            // TODO Auto-generated method stub
            super.onPageStarted(view, url, favicon);
        }
        @Override
                public boolean shouldOverrideUrlLoading(WebView view, String url) {
                    // TODO Auto-generated method stub

                    view.loadUrl(url);
                    return true;

                }
        @Override
                public void onPageFinished(WebView view, String url) {
                    // TODO Auto-generated method stub
                    super.onPageFinished(view, url);

                    progressBar.setVisibility(View.GONE);
                } …

在我的应用程序中,我有一个自定义进度条

progress.xml

 <ProgressBar
    android:id="@+id/progressBar1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:progressDrawable="@drawable/loader" />

我的gif文件

我想用这个图像创建一个进度条

换句话说,我想在每次从服务器下载数据时显示此图像,并在下载数据后将其删除

或者你可以说,如何将此图像显示为进度条

我正在使用WebViewClient加载网页,我想显示我的代码的进度条.我的代码没有逐渐加载进度.它只显示100%的进展.如何根据网页加载时间设置进度？

出于我的目的,我只需在WebView上加载" https://www.google.com ".请帮忙.谢谢.代码如下所示:

活动文件

public class MainActivity extends Activity {

private WebView webView;
private ProgressBar progressBar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    int vc = Color.parseColor("#feca01");


    progressBar = (ProgressBar) findViewById(R.id.determinateBar);
    progressBar.getProgressDrawable().setColorFilter(
            vc, android.graphics.PorterDuff.Mode.SRC_IN);
    webView = (WebView) findViewById(R.id.webView);
    webView.setWebViewClient(new MyBrowser());
    webView.getSettings().setJavaScriptEnabled(true);
    webView.loadUrl("http://deelay.me/5000/http://www.google.com");

}

private class MyBrowser extends WebViewClient {

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon)
    {
        super.onPageStarted(view, url, favicon);
        progressBar.setVisibility(View.VISIBLE);
        progressBar.incrementProgressBy(10);

    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
    }

    @Override …

我想创建 1 分钟的计时器进度条。我使用了以下代码，但它从 60 到 0 开始，而使用相同的过程，我必须从 0 到 60 开始。

public static void animateTimerProgress(int currentTimeDuration, final int maxTimeDuration, boolean withStartDelay, final DonutProgress timeOutProgressView, Runnable endAction) {
    final int duration = currentTimeDuration < 0 ? 1 : currentTimeDuration;
    timeOutProgressView.setMax(maxTimeDuration);
    timeOutProgressView.setProgress(duration);
    timeOutProgressView.animate()
            .setDuration(duration * SECOND_IN_MILLIS)
            .setInterpolator(new LinearInterpolator())
            .setStartDelay(withStartDelay ? TIMEOUT_START_DELAY : 0)
            .setUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
                @Override
                public void onAnimationUpdate(ValueAnimator valueAnimator) {
                    int progress = 1 + (int) ((1f - valueAnimator.getAnimatedFraction()) * (duration - 1f));

                    timeOutProgressView.setProgress(progress);
                }
            })
            .withEndAction(endAction)
            .start();
}

任何帮助，将不胜感激。

这是我的布局 xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/fragment_body"
android:fitsSystemWindows="true">

<include
    android:id="@+id/contextToolBar"
    layout="@layout/context_toolbar_layout" />

<android.support.v7.widget.RecyclerView
    android:id="@+id/list1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/contextToolBar"
    android:scrollbarSize="5dp"
    android:scrollbarThumbVertical="@color/scrollbarColor"
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

<ProgressBar
    android:id="@+id/delete_progress"
    style="@style/Widget.AppCompat.ProgressBar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:visibility="gone" />

它在回收视图中显示图像网格。我可以选择一堆图像并可以选择删除它们。以下是删除逻辑：

public void deleteSelectedFiles(final Context context, final List<MediaModel> selectionList) {

    String confirmationMessage = getString(R.string.delete_confirm_message);

    new AlertDialog.Builder(context)
            .setTitle(getString(R.string.action_delete))
            .setMessage(confirmationMessage)
            .setIcon(android.R.drawable.ic_dialog_alert)
            .setPositiveButton(android.R.string.yes, (dialog, whichButton) -> {
                View progressBar = getActivity().findViewById(R.id.delete_progress);
                dialog.cancel();
                progressBar.setVisibility(View.VISIBLE);

                deleteFileList(selectionList, this.getActivity());

                progressBar.setVisibility(View.GONE);
            })
            .setNegativeButton(android.R.string.no, null).show();
}

我希望在删除操作进行时进度条显示在前台。但它只是不显示。任何帮助将不胜感激。