是否可以向ActionBarSherlock添加进度条？ 我需要在特定时间显示和隐藏它。但它必须位于ActionBarSherlock内。
我班的代码。你可以看到，我使用requestWindowFeature（Window.FEATURE_PROGRESS），但它没有任何区别。同样的结果。 ：
public class RecipeActivity extends SherlockActivity {
private String picture;
private String TAG = "RecipeActivity";
private ImageView viewPicture;
private RecipeGeneral recipeGeneral;
private Recipe recipe;
private String [] pictures;
private ArrayList<Step> steps;
//private ImageView viewStar;
private DataBaseFactory db;
private NyamApplication application;
private TextView viewDescription;
private TextView userView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_PROGRESS);
setProgressBarIndeterminateVisibility(true);
try {
setContentView(R.layout.recipe_page);
getSupportActionBar().setDisplayShowTitleEnabled(false);
recipeGeneral = (RecipeGeneral)getIntent().getSerializableExtra("Recipe");
Log.d(TAG, "recipeGeneral = " + recipeGeneral.toString());
picture = Constants.URL + recipeGeneral.getImg_url();
Log.d(TAG,"picture : " + picture);
viewPicture = (ImageView)findViewById(R.id.picture);
new DownloadImageTask().execute(pictures);
viewDescription = (TextView)findViewById(R.id.recepy_description);
TextView viewTitle = (TextView)findViewById(R.id.recepy_title);
TextView ratingView = (TextView)findViewById(R.id.txtTitle3);
userView = (TextView)findViewById(R.id.author_name);
application = (NyamApplication)getApplication();
db = application.getDB();
if (getIntent().getBooleanExtra("isFavorites", false) == true) {
Log.d(TAG, "isFavorites = " + getIntent().getBooleanExtra("isFavorites", false));
viewDescription.setText(((Recipe)recipeGeneral).getDescription());
viewTitle.setText(recipeGeneral.getTitle());
Log.d(TAG, "Title = " + recipeGeneral.getTitle());
ratingView.setText(String.valueOf(recipeGeneral.getFavorites_by()));
Log.d(TAG, "Rating = " + String.valueOf(recipeGeneral.getFavorites_by()));
userView.setText(((Recipe)recipeGeneral).getUser());
Log.d(TAG, "User = " + ((Recipe)recipeGeneral).getUser());
steps = db.getStepsByRecipeId(recipeGeneral.getId());
if (steps != null) {
((Recipe)recipeGeneral).setSteps(steps);
}
} else {
Log.d(TAG, "isFavorites = " + getIntent().getBooleanExtra("isFavorites", false));
Object [] params = new Object[] {this, Constants.URL + recipeGeneral.getPath()+ Constants.JSON};
new AsyncHttpGetRecipe().execute(params);
new AsyncHttpGetSteps().execute(params);
viewTitle.setText(recipeGeneral.getTitle());
ratingView.setText(recipeGeneral.getFavorites_by());
Log.d(TAG, "Rating = " + recipeGeneral.getFavorites_by());
}
} catch (Exception e) {
e.printStackTrace();
}
}
private class DownloadImageTask extends AsyncTask<String,Void,Bitmap> {
Bitmap bitmap = null;
@Override
protected Bitmap doInBackground(String... str) {
try{
InputStream in = new java.net.URL(picture).openStream();
bitmap = BitmapFactory.decodeStream(new SanInputStream(in));
//viewPicture.setImageBitmap(bitmap);
}
catch(Exception e){
e.printStackTrace();
}
return bitmap;
}
@Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
viewPicture.setBackgroundDrawable(new BitmapDrawable(bitmap));
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
com.actionbarsherlock.view.MenuInflater inflater = getSupportMenuInflater();
inflater.inflate(R.menu.item_page_menu, (com.actionbarsherlock.view.Menu) menu);
return super.onCreateOptionsMenu(menu);
}
public void onClick(View v) {
switch(v.getId()) {
case R.id.icon_little3:
Log.d(TAG,"further");
if (getIntent().getBooleanExtra("isFavorites", false) == false) {
if (recipe != null && steps != null) {
recipe.setSteps(steps);
db.addRecipeToFavorites(recipe);
}
}
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.menu_further:
Log.d(TAG,"In menu_further");
Intent stepIntent = new Intent(this, StepActivity1.class);
if (getIntent().getBooleanExtra("isFavorites", false) == true) {
Log.d(TAG,"id: " + recipeGeneral.getId());
Log.d(TAG,"desc: " + recipeGeneral.getTitle());
stepIntent.putExtra("Recipe1", recipeGeneral);
} else {
Log.d(TAG,"id: " + recipe.getId());
Log.d(TAG,"desc: " + recipe.getTitle());
recipe.setSteps(steps);
stepIntent.putExtra("Recipe1", recipe);
}
startActivity(stepIntent);
return true;
case R.id.menu_cart:
Toast.makeText(this, "Cart", 10000).show();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
class AsyncHttpGetRecipe extends AsyncTask<Object, String, Recipe> {
@Override
protected Recipe doInBackground(Object... params) {
Recipe recipeAsync = null;
try {
recipeAsync = ApiFactory.getRecipe((Context)params[0], (String)params[1]);
} catch (JSONException e) {
e.printStackTrace();
}
recipe = recipeAsync;
return recipeAsync;
}
@Override
protected void onPostExecute(Recipe recipeTemp) {
viewDescription.setText(recipeTemp.getDescription());
Log.d(TAG, "Description = " + recipeTemp.getDescription());
userView.setText(recipeTemp.getUser());
Log.d(TAG, "User = " + recipeTemp.getUser());
}
}
class AsyncHttpGetSteps extends AsyncTask<Object, String, ArrayList<Step>> {
@Override
protected ArrayList<Step> doInBackground(Object... params) {
ArrayList<Step> stepsAsync = null;
try {
stepsAsync = ApiFactory.getSteps((Context)params[0], (String)params[1]);
} catch (JSONException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
}
return stepsAsync;
}
@Override
protected void onPostExecute(ArrayList<Step> stepsAsync) {
steps = stepsAsync;
}
}
}
答案 0 :(得分：16)
是。您可以使用ABS将ProgressBar添加到ActionBar。
这是以下提供的摘录，如果解决方案有帮助，请+1原始海报; - ）
在onCreate()方法中，添加以下代码：
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setProgressBarIndeterminateVisibility(true);
当您完成了显示ProgressBar for所需的任务时，请使用以下代码隐藏ProgressBar：
setProgressBarIndeterminateVisibility(false);
答案 1 :(得分：5)
是的，你可以，ABS有这样的功能。下一段代码来自ABS的Demos示例应用程序：
public class Progress extends SherlockActivity {
Handler mHandler = new Handler();
Runnable mProgressRunner = new Runnable() {
@Override
public void run() {
mProgress += 2;
//Normalize our progress along the progress bar's scale
int progress = (Window.PROGRESS_END - Window.PROGRESS_START) / 100 * mProgress;
setSupportProgress(progress);
if (mProgress < 100) {
mHandler.postDelayed(mProgressRunner, 50);
}
}
};
private int mProgress = 100;
@Override
protected void onCreate(Bundle savedInstanceState) {
setTheme(SampleList.THEME); //Used for theme switching in samples
super.onCreate(savedInstanceState);
//This has to be called before setContentView and you must use the
//class in com.actionbarsherlock.view and NOT android.view
requestWindowFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.progress);
findViewById(R.id.go).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
if (mProgress == 100) {
mProgress = 0;
mProgressRunner.run();
}
}
});
}
}
您可以在ABS的samples \ demos \目录中找到此示例（eclipse工作区中的Progress.java）
答案 2 :(得分：3)
要获得完全兼容性，您应该使用：
setSupportProgressBarIndeterminateVisibility(true);
以下是一个例子：
public class MyActivity extends SherlockFragmentActivity {
//...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.my_layout);
//...
setSupportProgressBarIndeterminateVisibility(true);
}
}