我的应用正在解析JSON数据，使用此JSON数据，我更改了TextView文本，ImageButton图像。 一切正常，但在我的Logcat中，我有一些错误“背景部分并发标记扫描GC释放了Bitmap ”。这是一个垃圾收集问题吗？
我该如何解决？ 干杯！
这是我的代码：
public class MainActivity extends ActionBarActivity {
public static final String TAG = MainActivity.class.getSimpleName();
private CurrentReportString mCurrentReportString;
@InjectView(R.id.jsonText) TextView mJsonText;
@InjectView(R.id.imageReport) ImageButton mImageReport;
@InjectView(R.id.imageReport2) ImageButton mImageReport2;
@InjectView(R.id.imageReport3) ImageButton mImageReport3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.inject(this);
String urlWebSite = "http://www.bundoransurfco.com/surf-report/surf-report/?json=1";
if (isNetworkAvailable()) {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(urlWebSite)
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
}
@Override
public void onResponse(Response response) throws IOException {
try {
String jsonData = response.body().string();
if (response.isSuccessful()) {
mCurrentReportString = getCurrentDetails(jsonData);
new DownloadImageTask(mImageReport)
.execute(mCurrentReportString.getUrlImages());
;
// Write in the main Thread.
runOnUiThread(new Runnable() {
@Override
public void run() {
updateReport();
}
});
} else {
alertUserAboutError();
}
} catch (IOException e) {
Log.e(TAG, "Exception caught: ", e);
}
catch (JSONException e){
Log.e(TAG, "Exception caught: ", e);
}
}
});
}
else {
Toast.makeText(this, getString(R.string.network_unavailable_message), Toast.LENGTH_LONG).show();
}
Log.d(TAG, "Main UI code is running!");
}
private void updateReport() {
mJsonText.setText(mCurrentReportString.getJsonContent());
if (mCurrentReportString.imageBackground == Boolean.FALSE)
{
Log.i(TAG, "No Background1");
mImageReport.setVisibility(View.INVISIBLE);
}
if (mCurrentReportString.imageBackground2 == Boolean.FALSE)
{
Log.i(TAG, "No Background2");
mImageReport2.setVisibility(View.INVISIBLE);
}
if (mCurrentReportString.imageBackground3 == Boolean.FALSE)
{
Log.i(TAG, "No Background3");
mImageReport3.setVisibility(View.INVISIBLE);
}
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private CurrentReportString getCurrentDetails(String jsonData) throws JSONException {
JSONObject report = new JSONObject(jsonData);
JSONObject postJson = report.getJSONObject("post");
CurrentReportString currentReportString = new CurrentReportString();
String contentString = postJson.getString("content");
//Report String
String contentWithoutWebcam = contentString.replace("CLICK HERE FOR LIVE PEAK WEBCAM", "");
int lastCharacter = contentWithoutWebcam.indexOf("#gallery-1");
String contentFirstPart = contentWithoutWebcam.substring(0, lastCharacter);
String jsonText = stripHtml(contentFirstPart);
currentReportString.setJsonContent(jsonText);
//Images
Document doc = Jsoup.parse(contentString);
Elements relLinks = doc.select("a[rel]");
//Elements relLinks = doc.select("a[rel=prettyPhoto[gallery-113]]");//
System.out.println("number of `rel`: "+relLinks.size());
ArrayList<String> urls=new ArrayList<String>();
for (Element el : relLinks){
// Log.i(TAG, el.attr("href"));
urls.add(el.attr("href"));
}
if (relLinks.size() == 0){
Log.i(TAG, "0 image");
currentReportString.setImageBackground(Boolean.FALSE);
currentReportString.setImageBackground2(Boolean.FALSE);
currentReportString.setImageBackground3(Boolean.FALSE);
}
else if (relLinks.size() == 1) {
// Log.i(TAG, String.valueOf(urls));
currentReportString.setUrlImages(urls.get(0));
Log.i(TAG, "first URL : " + currentReportString.getUrlImages());
currentReportString.setImageBackground2(Boolean.FALSE);
currentReportString.setImageBackground3(Boolean.FALSE);
}
else if (relLinks.size() == 2){
currentReportString.setUrlImages(urls.get(0));
currentReportString.setUrlImages2(urls.get(1));
currentReportString.setImageBackground3(Boolean.FALSE);
Log.i(TAG, "first URL : "+currentReportString.getUrlImages());
Log.i(TAG, "second URL : "+currentReportString.getUrlImages2());
}
else if (relLinks.size() == 3){
currentReportString.setUrlImages(urls.get(0));
currentReportString.setUrlImages2(urls.get(1));
currentReportString.setUrlImages2(urls.get(2));
Log.i(TAG, "first URL : "+currentReportString.getUrlImages());
Log.i(TAG, "second URL : "+currentReportString.getUrlImages2());
Log.i(TAG, "third URL : "+currentReportString.getUrlImages3());
}
else if (relLinks.size() > 3){
currentReportString.setUrlImages(urls.get(0));
currentReportString.setUrlImages2(urls.get(1));
currentReportString.setUrlImages2(urls.get(2));
Log.i(TAG, "first URL : "+currentReportString.getUrlImages());
Log.i(TAG, "second URL : "+currentReportString.getUrlImages2());
Log.i(TAG, "third URL : "+currentReportString.getUrlImages3());
}
return currentReportString;
}
private boolean isNetworkAvailable() {
ConnectivityManager manager = (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = manager.getActiveNetworkInfo();
boolean isAvailable = false;
if (networkInfo != null && networkInfo.isConnected()) {
isAvailable = true;
}
return isAvailable;
}
//Delete HTML Markup
public String stripHtml(String html) {
return Html.fromHtml(html).toString();
}
private void alertUserAboutError() {
AlertDialogFragment dialog = new AlertDialogFragment();
dialog.show(getFragmentManager(), "error_dialog");
}
//Change Image from ImageButton in Asynch with URL.
private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public DownloadImageTask(ImageView bmImage) {
this.bmImage = bmImage;
}
protected Bitmap doInBackground(String... urls) {
String urldisplay = urls[0];
Bitmap mIcon11 = null;
try {
InputStream in = new java.net.URL(urldisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return mIcon11;
}
protected void onPostExecute(Bitmap result) {
bmImage.setImageBitmap(result);
}
}
}
这是我的Logcat：
04-15 10:32:15.203 3008-3020/jardelcompany.bundoransurfco W/art﹕ Suspending all threads took: 15.897ms
04-15 10:32:15.257 3008-3020/jardelcompany.bundoransurfco I/art﹕ Background partial concurrent mark sweep GC freed 91(16KB) AllocSpace objects, 0(0B) LOS objects, 23% free, 12MB/16MB, paused 36.385ms total 94.446ms
04-15 10:32:15.373 3008-3024/jardelcompany.bundoransurfco I/OpenGLRenderer﹕ Initialized EGL, version 1.4
04-15 10:32:15.401 3008-3024/jardelcompany.bundoransurfco W/EGL_emulation﹕ eglSurfaceAttrib not implemented
04-15 10:32:15.401 3008-3024/jardelcompany.bundoransurfco W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa6404200, error=EGL_SUCCESS
04-15 10:32:18.856 3008-3020/jardelcompany.bundoransurfco I/art﹕ Background partial concurrent mark sweep GC freed 7539(430KB) AllocSpace objects, 7(147KB) LOS objects, 18% free, 17MB/21MB, paused 5.183ms total 26.542ms
04-15 10:32:18.879 3008-3023/jardelcompany.bundoransurfco I/System.out﹕ number of `rel`: 1
04-15 10:32:18.879 3008-3023/jardelcompany.bundoransurfco I/MainActivity﹕ first URL : http://www.bundoransurfco.com/wp-content/uploads/2014/11/11110974_10152658294117000_8310999896427501886_n.jpg
04-15 10:32:18.882 3008-3008/jardelcompany.bundoransurfco I/MainActivity﹕ No Background2
04-15 10:32:18.882 3008-3008/jardelcompany.bundoransurfco I/MainActivity﹕ No Background3