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Code Issues Releases Wiki Activity

fix context leaks

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This commit is contained in:
Andrei.Rosca 2018-05-06 10:50:02 +02:00
parent 0a596df497
commit 24c293e335
4 changed files with 71 additions and 19 deletions
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3
app/src/main/java/org/schabi/newpipe/about/LicenseFragment.java
View File

@ -1,5 +1,6 @@
package org.schabi.newpipe.about;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
@ -39,7 +40,7 @@ public class LicenseFragment extends Fragment {
* @param license the license to show
*/
public static void showLicense(Context context, License license) {
new LicenseFragmentHelper().execute(context, license);
new LicenseFragmentHelper((Activity) context).execute(license);
}
@Override

35
app/src/main/java/org/schabi/newpipe/about/LicenseFragmentHelper.java
View File

@ -1,8 +1,11 @@
package org.schabi.newpipe.about;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AlertDialog;
import android.webkit.WebView;
import org.schabi.newpipe.R;
@ -10,26 +13,46 @@ import org.schabi.newpipe.util.ThemeHelper;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.ref.WeakReference;
public class LicenseFragmentHelper extends AsyncTask<Object, Void, Integer> {
private Context context;
WeakReference<Activity> weakReference;
private License license;
public LicenseFragmentHelper(@Nullable Activity activity) {
weakReference = new WeakReference<>(activity);
}
@Nullable
private Activity getActivity() {
Activity activity = weakReference.get();
if (activity != null && activity.isFinishing()) {
return null;
} else {
return activity;
}
}
@Override
protected Integer doInBackground(Object... objects) {
context = (Context) objects[0];
license = (License) objects[1];
license = (License) objects[0];
return 1;
}
@Override
protected void onPostExecute(Integer result){
String webViewData = getFormattedLicense(context, license);
AlertDialog.Builder alert = new AlertDialog.Builder(context);
Activity activity = getActivity();
if (activity == null) {
return;
}
String webViewData = getFormattedLicense(activity, license);
AlertDialog.Builder alert = new AlertDialog.Builder(activity);
alert.setTitle(license.getName());
WebView wv = new WebView(context);
WebView wv = new WebView(activity);
wv.loadData(webViewData, "text/html; charset=UTF-8", null);
alert.setView(wv);

42
app/src/main/java/us/shandian/giga/ui/adapter/MissionAdapter.java
View File

@ -1,11 +1,14 @@
package us.shandian.giga.ui.adapter;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.content.FileProvider;
import android.support.v4.view.ViewCompat;
import android.support.v7.widget.RecyclerView;
@ -24,6 +27,7 @@ import android.widget.Toast;
import org.schabi.newpipe.R;
import java.io.File;
import java.lang.ref.WeakReference;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
@ -46,13 +50,13 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
ALGORITHMS.put(R.id.sha1, "SHA1");
}
private Context mContext;
private Activity mContext;
private LayoutInflater mInflater;
private DownloadManager mManager;
private DownloadManagerService.DMBinder mBinder;
private int mLayout;
public MissionAdapter(Context context, DownloadManagerService.DMBinder binder, DownloadManager manager, boolean isLinear) {
public MissionAdapter(Activity context, DownloadManagerService.DMBinder binder, DownloadManager manager, boolean isLinear) {
mContext = context;
mManager = manager;
mBinder = binder;
@ -247,7 +251,7 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
case R.id.md5:
case R.id.sha1:
DownloadMission mission = mManager.getMission(h.position);
new ChecksumTask().execute(mission.location + "/" + mission.name, ALGORITHMS.get(id));
new ChecksumTask(mContext).execute(mission.location + "/" + mission.name, ALGORITHMS.get(id));
return true;
default:
return false;
@ -352,19 +356,27 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
}
private class ChecksumTask extends AsyncTask<String, Void, String> {
private static class ChecksumTask extends AsyncTask<String, Void, String> {
ProgressDialog prog;
WeakReference<Activity> weakReference;
ChecksumTask(@NonNull Activity activity) {
weakReference = new WeakReference<>(activity);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
Activity activity = getActivity();
if (activity != null) {
// Create dialog
prog = new ProgressDialog(mContext);
prog = new ProgressDialog(activity);
prog.setCancelable(false);
prog.setMessage(mContext.getString(R.string.msg_wait));
prog.setMessage(activity.getString(R.string.msg_wait));
prog.show();
}
}
@Override
protected String doInBackground(String... params) {
@ -374,8 +386,24 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (prog != null) {
Utility.copyToClipboard(prog.getContext(), result);
if (getActivity() != null) {
prog.dismiss();
Utility.copyToClipboard(mContext, result);
}
}
}
@Nullable
private Activity getActivity() {
Activity activity = weakReference.get();
if (activity != null && activity.isFinishing()) {
return null;
} else {
return activity;
}
}
}
}

2
app/src/main/java/us/shandian/giga/ui/fragment/MissionsFragment.java
View File

@ -129,7 +129,7 @@ public abstract class MissionsFragment extends Fragment {
}
private void updateList() {
mAdapter = new MissionAdapter(mActivity, mBinder, mManager, mLinear);
mAdapter = new MissionAdapter((Activity) mActivity, mBinder, mManager, mLinear);
if (mLinear) {
mList.setLayoutManager(mLinearManager);