Question

我试图练习在Android Studio中使用GridView，我不知道为什么我会一直得到这个例外。

这是我主要课程的代码。

public class MainActivity extends AppCompatActivity {
private GridView turtle;
private List<Map<String,Object>> datalist;
private int[] icon = {R.drawable.address_book,R.drawable.calendar,R.drawable.camera,R.drawable.clock,R.drawable.games_control,R.drawable.messenger,R.drawable.ringtone,R.drawable.settings,R.drawable.speech_balloon,R.drawable.weather,R.drawable.world,R.drawable.youtube};
private String  [] iconName = {"Contackt","Calendar","Camera","Clock","game","messager","ring","setting","voice","weather","browser","video"};
private SimpleAdapter adapter;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    turtle = (GridView) findViewById(R.id.turtle);
    datalist = new ArrayList<Map<String,Object>>();
    adapter = new SimpleAdapter(this,getdata(),R.layout.item,new String[]{"pic","txt"}, new int[]{R.id.pic,R.id.text});
    turtle.setAdapter(adapter);
}
private  List<Map<String,Object>> getdata(){
    for(int i = 0; i<icon.length;i++) {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("pic", icon[i]);
        map.put("text",iconName[i]);
        datalist.add(map);


    }


    return datalist;
}
}

以下是我的主要XML文件的代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.jinyu.gridleview.MainActivity">

<GridView
    android:numColumns="3"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="10dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/turtle"
    android:layout_centerVertical="true"
    android:layout_centerHorizontal="true" />
</RelativeLayout>

以下是我的项目布局的代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000"
android:gravity="center"
>
<ImageView
    android:src="@drawable/ic_launcher"
    android:id="@+id/pic"
    android:layout_width="60dp"
    android:layout_height="60dp" />
<TextView
    android:layout_marginTop="5dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textColor="#ffffff"
    android:id="@+id/text"
    android:text="text"
    android:textSize="12dp"/>


</LinearLayout>

我的日志：

04-13 21：14：21.940 2558-2558 / com.example.jinyu.gridleview E / AndroidRuntime：致命异常：主要过程：com.example.jinyu.gridleview，PID：2558 java.lang.OutOfMemoryError：无法分配9437196字节分配4194304空闲字节和8MB直到OOM at dalvik.system.VMRuntime.newNonMovableArray（Native Method）在android.graphics.BitmapFactory.nativeDecodeAsset（本机方法）在android.graphics.BitmapFactory.decodeStream（BitmapFactory.java:609）在 android.graphics.BitmapFactory.decodeResourceStream（BitmapFactory.java:444）在 android.graphics.drawable.Drawable.createFromResourceStream（Drawable.java:1080）在 android.content.res.Resources.loadDrawableForCookie（Resources.java:2635）在android.content.res.Resources.loadDrawable（Resources.java:2540）在android.content.res.Resources.getDrawable（Resources.java:806）在android.content.Context.getDrawable（Context.java:458）在android.widget.ImageView.resolveUri（ImageView.java:811）在android.widget.ImageView.setImageResource（ImageView.java:418）在android.widget.SimpleAdapter.setViewImage（SimpleAdapter.java:276）在android.widget.SimpleAdapter.bindView（SimpleAdapter.java:226）在 android.widget.SimpleAdapter.createViewFromResource（SimpleAdapter.java:133）在android.widget.SimpleAdapter.getView（SimpleAdapter.java:121）在android.widget.AbsListView.obtainView（AbsListView.java:2346）在android.widget.GridView.makeAndAddView（GridView.java:1439）在android.widget.GridView.makeRow（GridView.java:366）在android.widget.GridView.fillDown（GridView.java:307）在android.widget.GridView.fillFromTop（GridView.java:442）在android.widget.GridView.layoutChildren（GridView.java:1304）在android.widget.AbsListView.onLayout（AbsListView.java:2148）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在android.widget.RelativeLayout.onLayout（RelativeLayout.java:1079）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在 android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout（ActionBarOverlayLayout.java:493）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1743）在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1586）在android.widget.LinearLayout.onLayout（LinearLayout.java:1495）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在 com.android.internal.policy.PhoneWindow $ DecorView.onLayout（PhoneWindow.java:2678）在android.view.View.layout（View.java:16630）在android.view.ViewGroup.layout（ViewGroup.java:5437）在android.view.ViewRootImpl.performLayout（ViewRootImpl.java:2171）在android.view.ViewRootImpl.performTraversals（ViewRootImpl.java:1931）在android.view.ViewRootImpl.doTraversal（ViewRootImpl.java:1107）在 android.view.ViewRootImpl $ TraversalRunnable.run（ViewRootImpl.java:6013）在 android.view.Choreographer $ CallbackRecord.run（Choreographer.java:858）在android.view.Choreographer.doCallbacks（Choreographer.java:670）在android.view.Choreographer.doFrame（Choreographer.java:606）在 android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:844）在android.os.Handler.handleCallback（Handler.java:739）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:148）在android.app.ActivityThread.main（ActivityThread.java:5417） at java.lang.reflect.Method.invoke（Native Method）在c

Answer 1

您无法动态增加堆大小，但可以使用。

请求使用更多

android:largeHeap="true"

中的

。

https://stackoverflow.com/a/25719828/4853552

Answer 2

谢谢大家，我通过在手机上运行此应用来解决问题。

为什么我的GridView不起作用？

2 个答案: