AppCompatActivity OutOfMemoryError

Question

我想把工具栏添加到我的安卓应用程序中，但是当我将活动更改为AppCompatActivity时，我得到了“致命例外:主AppCompatActivity”。这是我的代码，我不知道为什么更改一行会导致内存错误。

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;

public class Notifications extends AppCompatActivity {
//public class Notifications extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_notifications);
        //Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
        //setSupportActionBar(myToolbar);

        //String[] notificationsDates = {"12Jan 2016", "14Feb 2016", "22Feb 2016", "18Dec 2015", "2Nov 2015", "20Oct 2015", "15Oct 2015"};
        //String[] estimationTimes = {"9:00 am", "10:00 am", "11:00 am", "9:00 am", "10:00 am", "10:00 am", "11:00 am"};
        final SingleNotification[] notifications = {
            new SingleNotification("12Jan2016","9:00 am",R.drawable.fedex,false),
            new SingleNotification("14Feb2016","10:00 am",R.drawable.ups,false),
            new SingleNotification("22Feb2016","11:00 am",R.drawable.purolator,true),
            new SingleNotification("18Dec2015","9:00 am",R.drawable.dhl,true),
            new SingleNotification("2Nov2015","10:00 am",R.drawable.fedex,true),
            new SingleNotification("20Oct2015","10:00 am",R.drawable.ups,true),
            new SingleNotification("15Oct2015","11:00 am",R.drawable.ups,true)
    };
            ListAdapter listAdapter = new CustomeAdapter(this, notifications);
            ListView notificationListView = (ListView) findViewById(R.id.notificationsList);
        notificationListView.setAdapter(listAdapter);

        notificationListView.setOnItemClickListener(
            new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                        String date = String.valueOf(notifications[position].getDeliveryDate());
                        Toast.makeText(Notifications.this, date, Toast.LENGTH_LONG).show();
                    }
                }
        );

    }

    //String[] notificationsDate = {"Delivery Data: 17Feb2015"};
    //String[] notificationsTime = {" Estimated Time: "};
}

以下是CustomAdapter：

import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.content.res.Resources;
import android.app.Activity;

public class CustomeAdapter extends ArrayAdapter<SingleNotification> {

CustomeAdapter(Context context, SingleNotification[] notifications) {
    super(context, R.layout.custome_row, notifications);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater layoutInflater = LayoutInflater.from(getContext());
    View customView = layoutInflater.inflate(R.layout.custome_row, parent, false);

        SingleNotification notification = getItem(position);
        LinearLayout singleNotificationLayout = (LinearLayout)     customView.findViewById(R.id.singleNotificationLayout);
    TextView deliveryDateText = (TextView) customView.findViewById(R.id.delivaryDataText);
    TextView notificationNumberText = (TextView) customView.findViewById(R.id.notificationNumberText);
    TextView estimationTimeText = (TextView) customView.findViewById(R.id.estimationTimeText);
    ImageView logoImage = (ImageView)     customView.findViewById(R.id.logoImage);

        deliveryDateText.setText(notification.getDeliveryDate());
        notificationNumberText.setText(String.valueOf(position + 1));
        estimationTimeText.setText(notification.getEstimationTime());
        logoImage.setImageResource(notification.getImageID());
        if (notification.getIsDelivered())
        singleNotificationLayout.setBackgroundColor(Color.parseColor("#6d6d6d"));
        else
        singleNotificationLayout.setBackgroundColor(Color.parseColor("#FF40459A"));
        return customView;
    }
}

这是日志：

java.lang.OutOfMemoryError
                                                                         at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
                                                                         at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:501)
                                                                         at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:354)
                                                                         at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:785)
                                                                         at android.content.res.Resources.loadDrawable(Resources.java:1970)
                                                                         at android.content.res.Resources.getDrawable(Resources.java:660)
                                                                         at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:323)
                                                                         at android.support.v7.widget.TintManager.getDrawable(TintManager.java:175)
                                                                         at android.support.v7.widget.TintManager.getDrawable(TintManager.java:168)
                                                                         at android.support.v7.widget.AppCompatImageHelper.setImageResource(AppCompatImageHelper.java:51)
                                                                         at android.support.v7.widget.AppCompatImageView.setImageResource(AppCompatImageView.java:72)
                                                                               at android.widget.AbsListView.obtainView(AbsListView.java:2143)
                                                                         at android.widget.ListView.makeAndAddView(ListView.java:1831)
                                                                         at android.widget.ListView.fillDown(ListView.java:674)
                                                                         at android.widget.ListView.fillSpecific(ListView.java:1332)
                                                                         at android.widget.ListView.layoutChildren(ListView.java:1630)
                                                                         at android.widget.AbsListView.onLayout(AbsListView.java:1994)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1021)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1037)
                                                                         at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:747)
                                                                         at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42)
                                                                         at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1156)
                                                                         at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:760)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
                                                                         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
                                                                         at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
                                                                         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
                                                                         at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
                                                                         at android.view.View.layout(View.java:14008)
                                                                         at android.view.ViewGroup.layout(ViewGroup.java:4373)
                                                                         at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892)
                                                                         at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1711)
                                                                         at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
                                                                         at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
                                                                         at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
                                                                         at android.view.Choreographer.doCallbacks(Choreographer.java:562)
                                                                         at android.view.Choreographer.doFrame(Choreographer.java:532)
                                                                         at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
                                                                         at android.os.Handler.handleCallback(Handler.java:725)
                                                                         at android.os.Handler.dispatchMessage(Handler.java:92)
                                                                            at android.os.Looper.loop(Looper.java:137)

Answer 1

因此，正如您所看到的，问题在适配器(at com...timesavvi.CustomeAdapter.getView(CustomeAdapter.java:36))中。

罪魁祸首似乎是logoImage.setImageResource(notification.getImageID()); (我认为是36岁)

这意味着getImageID指向的图像是一个非常大的文件，不适合于设备。您应该使用缩放图像的不同密度，而不是使用特别大的尺寸，以避免这个问题。

还请记住，在一个adpater中，您编写的任何代码都可以被调用数十次，这取决于您在回收器/列表视图中有多少行，并且如果您正在从网络资源中解码，它可能会继续在后台对即使在屏幕上也不存在的行执行此操作，因此，如果您使用这些代码，则需要管理这些调用。