Question

我是一个极端的Android / Java新手，在我的第一个Android应用程序上工作。

我有一个从php / mySQL页面下载数据的页面，并将其显示在屏幕布局上。数据将包含某些字段;标题，摘要，照片等。＆＃34;照片＆＃34; field是在线存储的图像的URL。

当照片链接字段为空时，页面似乎工作正常。当图像是一个非常小的图像时，页面似乎工作正常。但是当图像的文件较大时，应用程序会崩溃。

此页面的完整代码如下所示，因为我不知道此代码可能出现的问题！

import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.TextView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.InputStream;

public class DetailScreen extends android.support.v4.app.Fragment {
RelativeLayout relativeLayout;

ProgressDialog progressDialog;
DownloadImageTask d;
ImageView imageView;
int tab,position;

ImageView detail_image;
TextView detail_head;
TextView detail_disc;
TextView detail_date;
TextView detail_detail;
TextView detail_url;

Bitmap imageBitmap = null;

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putParcelable("imageBitmap",imageBitmap);
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if(savedInstanceState != null) {
        imageBitmap = savedInstanceState.getParcelable("imageBitmap");
    }

    Bundle bundle = this.getArguments();
    if(bundle != null) {
        tab = bundle.getInt(BackEnd.TAB);
        position = bundle.getInt(BackEnd.POSITION);
    }
}

void setValues()
{

    JSONArray RawData = (tab == 0) ? BackEnd.news : BackEnd.events;
    JSONObject data = null;

    try {
        data = (JSONObject) RawData.get(position);
    }
    catch (JSONException e) {
        e.printStackTrace();
    }

    try {
        assert data != null;
        if(imageBitmap == null) {
            d = new DownloadImageTask(detail_image);
            d.execute((String) data.get("photograph"));
            progressDialog = new ProgressDialog(getActivity());
            progressDialog.setMessage("Loading Image");
            progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
            progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {
                    d.cancel(true);
                    Toast.makeText(getActivity(), "Unable to load Image", Toast.LENGTH_SHORT).show();
                }
            });
            progressDialog.show();

        }

        detail_head.setText((String) data.get("title"));
        detail_disc.setText((String) data.get((tab==0)?"summary":"location"));
        detail_date.setText((String) data.get("date"));
        detail_detail.setText(Html.fromHtml((String) data.get("details")));
        if (tab == 0) {
            final String url = (String) data.get("url");
            detail_url.setText(getResources().getString(R.string.urlMessage));
            detail_url.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    TextView t = (TextView) v;
                    t.setTextColor(Color.BLACK);
                    Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                    startActivity(browserIntent);
                }
            });
        } else {
            View view = getView();
            if(view != null) {
                TextView textView = (TextView) view.findViewById(R.id.detail_url);
                textView.setText("");
            }
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    relativeLayout = (RelativeLayout) getActivity().findViewById(R.id.actionBarCustom);
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);

    imageView = new ImageView(getActivity());
    imageView.setImageResource(R.drawable.ic_action_back);
    imageView.setLayoutParams(params);

    imageView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            android.support.v4.app.Fragment fragment = new Page4();
            getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.mainContent, fragment).addToBackStack(null).commit();
        }

    });
}

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    detail_image = (ImageView) view.findViewById(R.id.detail_image);
    if(imageBitmap != null)
        detail_image.setImageBitmap(imageBitmap);

    detail_head = (TextView) view.findViewById(R.id.detail_head);
    detail_disc = (TextView) view.findViewById(R.id.detail_disc);
    detail_date = (TextView) view.findViewById(R.id.detail_date);
    detail_detail = (TextView) view.findViewById(R.id.detail_detail);
    detail_url = (TextView) view.findViewById(R.id.detail_url);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    return inflater.inflate(R.layout.fragment_detail_screen, container, false);
}

@Override
public void onResume() {
    super.onResume();
    TextView t=(TextView)relativeLayout.findViewById(R.id.actionText);
     t.setText("Details");
    relativeLayout.addView(imageView);
    setValues();
}

@Override
public void onPause() {
    super.onPause();
    relativeLayout.removeView(imageView);
}

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) {
            e.printStackTrace();
        }
        return mIcon11;
    }

    protected void onPostExecute(Bitmap result) {
        imageBitmap = result;
        bmImage.setImageBitmap(result);
        progressDialog.hide();
    }
}
}

任何人都可以对这个问题提出任何想法，或者看到我上面代码有任何问题吗？

崩溃日志：

10-15 16:59:35.436 6137-6538/com E/dalvikvm-heap: Out of memory on a 25137936-byte allocation.
10-15 16:59:35.436 6137-6538/com I/dalvikvm: "AsyncTask #4" prio=5 tid=15 RUNNABLE
10-15 16:59:35.436 6137-6538/com I/dalvikvm:   | group="main" sCount=0 dsCount=0 obj=0x44106838 self=0x5fcb1a80
10-15 16:59:35.436 6137-6538/com I/dalvikvm:   | sysTid=6538 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1606718640
10-15 16:59:35.436 6137-6538/com I/dalvikvm:   | state=R schedstat=( 101296084 23520127 71 ) utm=7 stm=2 core=1
10-15 16:59:35.436 6137-6538/com I/dalvikvm:     at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:623)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:696)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at com.DetailScreen$DownloadImageTask.doInBackground(DetailScreen.java:198)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at com.DetailScreen$DownloadImageTask.doInBackground(DetailScreen.java:188)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
10-15 16:59:35.441 6137-6538/com I/dalvikvm:     at java.lang.Thread.run(Thread.java:841)
10-15 16:59:35.446 6137-6146/com D/AbsListView: [unregisterDoubleTapMotionListener]
10-15 16:59:35.446 6137-6538/com D/skia: --- decoder->decode returned false
10-15 16:59:35.446 6137-6538/com W/dalvikvm: threadid=15: thread exiting with uncaught exception (group=0x41b7c700)
10-15 16:59:35.446 6137-6146/com I/MotionRecognitionManager:   .unregisterListener : / listener count = 0->0,  
10-15 16:59:35.446 6137-6146/com D/AbsListView: unregisterIRListener() is called 
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #4
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime: java.lang.RuntimeException: An error occured while executing doInBackground()
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.os.AsyncTask$3.done(AsyncTask.java:299)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.FutureTask.run(FutureTask.java:239)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.lang.Thread.run(Thread.java:841)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:  Caused by: java.lang.OutOfMemoryError
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:623)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:696)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at com.DetailScreen$DownloadImageTask.doInBackground(DetailScreen.java:198)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at com.DetailScreen$DownloadImageTask.doInBackground(DetailScreen.java:188)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
10-15 16:59:35.451 6137-6538/com E/AndroidRuntime:     at java.lang.Thread.run(Thread.java:841) 
10-15 16:59:35.456 6137-6146/com D/AbsListView: [unregisterDoubleTapMotionListener]
10-15 16:59:35.456 6137-6146/com I/MotionRecognitionManager:   .unregisterListener : / listener count = 0->0,  
10-15 16:59:35.456 6137-6146/com D/AbsListView: unregisterIRListener() is called 
10-15 16:59:35.456 6137-6146/com D/AbsListView: [unregisterDoubleTapMotionListener]
10-15 16:59:35.456 6137-6146/com I/MotionRecognitionManager:   .unregisterListener : / listener count = 0->0,  
10-15 16:59:35.456 6137-6146/com D/AbsListView: unregisterIRListener() is called 
10-15 16:59:35.456 6137-6146/com D/AbsListView: [unregisterDoubleTapMotionListener]
10-15 16:59:35.461 6137-6146/com I/MotionRecognitionManager:   .unregisterListener : / listener count = 0->0,  
10-15 16:59:35.461 6137-6146/com D/AbsListView: unregisterIRListener() is called 
10-15 16:59:42.706 6137-6137/com I/Choreographer: Skipped 422 frames!  The application may be doing too much work on its main thread.
10-15 16:59:43.536 6137-6137/com D/AbsListView: onDetachedFromWindow
10-15 16:59:43.566 6137-6137/com E/WindowManager: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{44128b10 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.566 6137-6137/com E/WindowManager: android.view.WindowLeaked: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{44128b10 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:452)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.app.Dialog.show(Dialog.java:287)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at com.DetailScreen.setValues(DetailScreen.java:95)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at com.DetailScreen.onResume(DetailScreen.java:179)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.support.v4.app.Fragment.performResume(Fragment.java:2005)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1572)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:493)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.os.Handler.handleCallback(Handler.java:730)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.os.Handler.dispatchMessage(Handler.java:92)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.os.Looper.loop(Looper.java:176)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at android.app.ActivityThread.main(ActivityThread.java:5419)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invokeNative(Native Method)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invoke(Method.java:525)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
10-15 16:59:43.566 6137-6137/com E/WindowManager:     at dalvik.system.NativeStart.main(Native Method)
10-15 16:59:43.576 6137-6137/com E/WindowManager: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{441be848 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.576 6137-6137/com E/WindowManager: android.view.WindowLeaked: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{441be848 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:452)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.app.Dialog.show(Dialog.java:287)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at com.DetailScreen.setValues(DetailScreen.java:95)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at com.DetailScreen.onResume(DetailScreen.java:179)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.support.v4.app.Fragment.performResume(Fragment.java:2005)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1572)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:493)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.os.Handler.handleCallback(Handler.java:730)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.os.Handler.dispatchMessage(Handler.java:92)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.os.Looper.loop(Looper.java:176)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at android.app.ActivityThread.main(ActivityThread.java:5419)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invokeNative(Native Method)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invoke(Method.java:525)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
10-15 16:59:43.576 6137-6137/com E/WindowManager:     at dalvik.system.NativeStart.main(Native Method)
10-15 16:59:43.586 6137-6137/com E/WindowManager: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{44252ad8 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.586 6137-6137/com E/WindowManager: android.view.WindowLeaked: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{44252ad8 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:452)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.app.Dialog.show(Dialog.java:287)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at com.DetailScreen.setValues(DetailScreen.java:95)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at com.DetailScreen.onResume(DetailScreen.java:179)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.support.v4.app.Fragment.performResume(Fragment.java:2005)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1572)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:493)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.os.Handler.handleCallback(Handler.java:730)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.os.Handler.dispatchMessage(Handler.java:92)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.os.Looper.loop(Looper.java:176)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at android.app.ActivityThread.main(ActivityThread.java:5419)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invokeNative(Native Method)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invoke(Method.java:525)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
10-15 16:59:43.586 6137-6137/com E/WindowManager:     at dalvik.system.NativeStart.main(Native Method)
10-15 16:59:43.591 6137-6137/com E/WindowManager: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{442e5b90 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.591 6137-6137/com E/WindowManager: android.view.WindowLeaked: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{442e5b90 G.E..... R.....ID 0,0-684,192} that was originally added here
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:452)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.app.Dialog.show(Dialog.java:287)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at com.DetailScreen.setValues(DetailScreen.java:95)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at com.DetailScreen.onResume(DetailScreen.java:179)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.support.v4.app.Fragment.performResume(Fragment.java:2005)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1572)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:493)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.os.Handler.handleCallback(Handler.java:730)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.os.Handler.dispatchMessage(Handler.java:92)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.os.Looper.loop(Looper.java:176)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at android.app.ActivityThread.main(ActivityThread.java:5419)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invokeNative(Native Method)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invoke(Method.java:525)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
10-15 16:59:43.591 6137-6137/com E/WindowManager:     at dalvik.system.NativeStart.main(Native Method)
10-15 16:59:43.596 6137-6137/com E/WindowManager: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{4437be38 V.E..... R......D 0,0-684,192} that was originally added here
10-15 16:59:43.596 6137-6137/com E/WindowManager: android.view.WindowLeaked: Activity com.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{4437be38 V.E..... R......D 0,0-684,192} that was originally added here
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:452)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.app.Dialog.show(Dialog.java:287)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at com.DetailScreen.setValues(DetailScreen.java:95)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at com.DetailScreen.onResume(DetailScreen.java:179)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.support.v4.app.Fragment.performResume(Fragment.java:2005)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1572)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:493)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.os.Handler.handleCallback(Handler.java:730)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.os.Handler.dispatchMessage(Handler.java:92)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.os.Looper.loop(Looper.java:176)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at android.app.ActivityThread.main(ActivityThread.java:5419)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invokeNative(Native Method)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at java.lang.reflect.Method.invoke(Method.java:525)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
10-15 16:59:43.596 6137-6137/com E/WindowManager:     at dalvik.system.NativeStart.main(Native Method)

我知道php / mySQL部分工作正常。它似乎只是某些图像上的这个页面，应用程序将在加载微调器旋转时崩溃。我唯一可以看到的可能是因为照片的尺寸较大。

Answer 1

您的内存不足错误。我猜您正在下载大图像。我更喜欢你使用this库。它非常棒且易于使用。该库下载图像并放入设备的缓存中。如果您想了解更多详细信息，请随时写信。

Answer 2

正如其他人所指出的那样，这次崩溃似乎与内存管理有关。

我发现可以通过添加属性来处理：

android:hardwareAccelerated="true"

作为清单中的活动标记。

有人可以评论这是否是解决这个崩溃问题的合法方法吗？

Answer 3

当您下载图像时，会出现此问题，并且在下载某些图像后没有剩余的内存分配给您的应用程序。有各种图像加载库可以让您的工作更轻松：Fresco，Picasso，Glide等。

我建议您查看图片管理库（Facebook），Fresco与其他图片加载库相比非常棒且成熟。
< / LI>
Fresco拥有SimpleDraweeView作为自定义图片视图，支持Rounded Corners and Circles link并支持动画（.gif，.webp）以及普通图像（.jpg，.png））。
Fresco使用3层架构（BITMAP_MEMORY_CACHE，ENCODED_MEMORY_CACHE和DISK_CACHE）处理图像的所有缓存。它还减少了OOM（Out Of Memory）问题。当视图中的图像离开屏幕时，它会自动回收位图，从而释放内存。

您可以通过在清单中添加android:largeHeap="true"来增加分配给您的应用程序的内存。

注意：为您的应用程序增加heap并不被视为理想的解决方案。

以下是Google解压缩的摘录，

但是，请求大堆的功能仅适用于a 一小组应用程序，可以证明需要消耗更多的RAM（例如作为一个大型照片编辑应用程序）。永远不要简单地请求大堆因为你的内存耗尽，需要快速修复 - 你应该这样做只有当你确切知道所有记忆的存在时才使用它分配以及必须保留的原因。然而，即使你有信心你的应用程序可以证明大堆的合理性，你应该避免请求它尽可能的。使用额外的内存将越来越多因为垃圾而损害整体用户体验收集将花费更长时间，系统性能可能会更慢任务切换或执行其他常见操作。

这是文档https://developer.android.com/training/articles/memory.html

图片下载期间Android页面崩溃

3 个答案: