Question

我正在尝试在我的函数中加载进度条。我有一个在加载时连接外部数据库的功能，我需要一个进度条。

<ProgressBar
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/progress_bar"
        android:layout_gravity="center"
        android:max="100"
        android:progress="50" />

<Button
        android:id="@+id/botonAcceder"
        android:layout_width="@dimen/width_boto_acceptar_intro_cod"
        android:layout_height="@dimen/height_input_intro_cod"
        android:background="@drawable/fondosubmit"
        android:text="@string/aceptar"
        android:onClick="irFormularioReserva"
        android:textSize="30dp"
        android:textColor="#000000"
        android:layout_gravity="center_horizontal|bottom"
        android:layout_below="@+id/frameLayout5"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="@dimen/margin_top_boto_acceptar_intro_cod"/>

    public void irFormularioReserva(View v){

    /*
    mProgress = (ProgressBar) findViewById(R.id.progress_bar);
    // Start lengthy operation in a background thread
    new Thread(new Runnable() {
        public void run() {
            while (mProgressStatus < 100) {

                mProgressStatus = thread();

                // Update the progress bar
                mHandler.post(new Runnable() {
                    public void run() {
                        mProgress.setProgress(mProgressStatus);
                    }
                });
            }
        }
    }).start();*/



    //FUNCIONA NO BORRAR
    final httpHandler handler = new httpHandler();
    Thread thread = new Thread()
    {

        @Override
        public void run() {

            final String txt = handler.post("http://www.url.com/page.php", "codigo", codigoInput.getText().toString());
            final TextView t = (TextView) findViewById(R.id.textView);
            runOnUiThread(new Runnable() {
                @Override
                public void run() {

                        //t.setText(txt);
                        /* #### REDIRECCIÓN A OTRA ACTIVIDAD ##### */
                        Intent act = new Intent(IntroduceCodigo.this, formularioReserva.class);
                        act.putExtra("codigo", txt);
                        startActivity(act);
                        finish();
                        /* #### FIN REDIRECCIÓN A OTRA ACTIVIDAD ##### */


                    // t.setText(txt);
                    //System.out.println(txt);
                }
            });

        }

    };
    thread.start();
}

Answer 1

正如323go所说。您可以使用AsyncTask方法，它将为您提供网络内容的前后阶段。很容易，您可以显示和解除progressdialog。

    class ServerAsync extends AsyncTask<String, Integer, String>{

    ProgressDialog mProgressDialog;
    @Override
    protected void onPreExecute() {
        //stat the progress dialog
        mProgressDialog = ProgressDialog.show(context, title, message);
    }

    @Override
    protected String doInBackground(String... params) {
        // Do your server stuff
    }

    @Override
    protected void onProgressUpdate(Integer... values) {
        super.onProgressUpdate(values);
        //run your progressbar through some time/counter
    }

    @Override
    protected void onPostExecute(String result) {
        //dismiss after finished all server stuffs
        mProgressDialog.dismiss();
    }   

}

我的函数中的ProgressBar

1 个答案: