Question

我知道之前已经问过这个问题，但我有不同的设置。

我的Sqlite数据库：

private void SetUpLibrary() {
     ArrayList<String> results = new ArrayList<String>();
        //Declare SQLiteDatabase object
        SQLiteDatabase sampleDB = null;

        try {
            //Instantiate sampleDB object
            sampleDB =  this.openOrCreateDatabase(db.dbname, MODE_PRIVATE, null);
            //Create table using execSQL

            try{
                //add table
                sampleDB.execSQL("CREATE TABLE " + db.tblnames[0]+  " (disease_no INTEGER, disease_name VARCHAR, disease_desc VARCHAR, disease_symptoms VARCHAR, disease_control VARCHAR);");


                Toast.makeText(getApplicationContext(), "Application library has been set successfully!", Toast.LENGTH_LONG).show();
            }catch (SQLiteException se ) {
               }

        } catch (SQLiteException se ) {
            Toast.makeText(getApplicationContext(), "Couldn't create or open the database", Toast.LENGTH_LONG).show();
        }

}

我的进度条：

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

      // Start long running operation in a background thread
      new Thread(new Runnable() {
         public void run() {
            while (progressStatus < 30) {
               progressStatus += 1;
        // Update the progress bar and display the 
                             //current value in the text view
        handler.post(new Runnable() {
        public void run() {
           progressBar.setProgress(progressStatus);
          // textView.setText(progressStatus+"/"+progressBar.getMax());
        }
            });
            try {
               // Sleep for 200 milliseconds. 
                             //Just to display the progress slowly
               Thread.sleep(200);
            } catch (InterruptedException e) {
               e.printStackTrace();
            }
         }
      }
      }).start();

这就是XML：

<ProgressBar
    android:id="@+id/progressBar1"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/bStart"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="42dp"
    android:indeterminate="false"
    android:max="30"
    android:minHeight="50dp"
    android:minWidth="200dp"
    android:progress="1" />

我想在设置SQLite数据库时询问如何使进度条工作。我已经尝试了一些建议，但没有一个有效。

Answer 1

您必须从设置更新进度。见下文

private void SetUpLibrary() {
     progressBar.setProgress(0);

     ArrayList<String> results = new ArrayList<String>();
        //Declare SQLiteDatabase object
        SQLiteDatabase sampleDB = null;

        try {
            //Instantiate sampleDB object
            sampleDB =  this.openOrCreateDatabase(db.dbname, MODE_PRIVATE, null);
            progressBar.setProgress(50);
            //Create table using execSQL

             try{
                //add table
                sampleDB.execSQL("CREATE TABLE " + db.tblnames[0]+  " (disease_no INTEGER, disease_name VARCHAR, disease_desc VARCHAR, disease_symptoms VARCHAR, disease_control VARCHAR);");

                progressBar.setProgress(100);
                Toast.makeText(getApplicationContext(), "Application library has been set successfully!", Toast.LENGTH_LONG).show();
            }catch (SQLiteException se ) {
               }

        } catch (SQLiteException se ) {
            Toast.makeText(getApplicationContext(), "Couldn't create or open the database", Toast.LENGTH_LONG).show();
        }
  progressBar.setVisibility(View.Gone);
}

创建数据库时的进度条

1 个答案: