为什么在我的App上放置ImageView会使系统崩溃？

Question

这是我有问题的人！ 我目前正在尝试开发Mobile Grocery App。 但是，当我转到这种布局（Baby_Diaper）时，它崩溃了吗？ 我发现这里的问题是ImageView，当我删除I​​mageView时，它起作用了！

婴儿尿布（JAVA）

public class Baby_Diaper extends ActionBarActivity {
ArrayList<String> selection = new ArrayList<String>();
TextView final_text;
Button addtoCart;
ImageView diaper_bckgrnd;
Intent i = new Intent(this, Shopping_List.class);


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_baby__diaper);
    addtoCart = (Button) findViewById(R.id.addtocart);
    final_text = (TextView)findViewById(R.id.final_shopping_diaper);
    diaper_bckgrnd = (ImageView) findViewById(R.id.ctgry_bckgrnd_dpr);

}


public void SelectItem (View view) {

    boolean checked = ((CheckBox) view) .isChecked();
    switch (view.getId())
    {
        case R.id.pampers:

            if(checked)
            {selection.add("Pampers");}
            else
            {
                selection.remove ("Pampers");
            }

            break;

        case R.id.huggies:

            if(checked)
            {selection.add("Huggies");}
            else
            {
                selection.remove ("Huggies");
            }

            break;

        case R.id.johnsons:

            if(checked)
            {selection.add("Johnsons");}
            else
            {
                selection.remove ("Johnsons");
            }

            break;

        case R.id.supreme:

            if(checked)
            {selection.add("Supreme");}
            else
            {
                selection.remove ("Supreme");
            }

            break;
    }
}

public void ocaddtocart(View view){
    String final_shopping_selection = "";

    for (String Selections  : selection){
        final_shopping_selection = final_shopping_selection + Selections + "\n";
    }

    final_text.setText(final_shopping_selection);
    final_text.setEnabled(true);}

public void ocgtshoppinglist (View view){
    Intent x = new Intent(Baby_Diaper.this, Shopping_List.class);
    x.putExtra("items", final_text.getText().toString());

    startActivity(x);
}

Baby_Diaper XML

<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"
tools:context="com.example.admin.mobile_grocery.Baby_Diaper"
android:id="@+id/baby_diaper">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/ctgry_bckgrnd_dpr"
    android:src="@drawable/category_background"
    android:scaleType="centerCrop"
    />

<CheckBox
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/pampers"
    android:id="@+id/pampers"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_marginTop="52dp"
    android:checked="false"
    android:onClick="SelectItem"
    />

<CheckBox
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/huggies"
    android:id="@+id/huggies"
    android:layout_below="@+id/pampers"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:checked="false"
    android:onClick="SelectItem"

    />

<CheckBox
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/johnsons"
    android:id="@+id/johnsons"
    android:layout_below="@+id/huggies"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:checked="false"
    android:onClick="SelectItem"
    android:inputType="textNoSuggestions"

    />

<CheckBox
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/supreme"
    android:id="@+id/supreme"
    android:layout_below="@+id/johnsons"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:checked="false"
    android:onClick="SelectItem"
    android:inputType="textNoSuggestions"
    />

<Button
    style="?android:attr/buttonStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/addtocart"
    android:id="@+id/addtocart"
    android:layout_alignParentTop="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:inputType="textNoSuggestions"
    android:onClick="ocaddtocart" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="Hello Shoppers!"
    android:id="@+id/final_shopping_diaper"
    android:layout_centerVertical="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="80dp" />

<Button
    style="?android:attr/buttonStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="GO TO SHOPPING LIST"
    android:id="@+id/gt_shopping_list"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:onClick="ocgtshoppinglist"
    />

Logcat错误

  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.admin.mobile_grocery/com.example.admin.mobile_grocery.Baby_Diaper}: android.view.InflateException: Binary XML file line #7: Error inflating class <unknown> at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135) at android.app.ActivityThread.access$700(ActivityThread.java:140) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4921) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) at dalvik.system.NativeStart.main(Native Method) Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class <unknown> at android.view.LayoutInflater.createView(LayoutInflater.java:619) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) at android.view.LayoutInflater.onCreateView(LayoutInflater.java:666) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691) at android.view.LayoutInflater.rInflate(LayoutInflater.java:752) at android.view.LayoutInflater.inflate(LayoutInflater.java:495) at android.view.LayoutInflater.inflate(LayoutInflater.java:397) at android.view.LayoutInflater.inflate(LayoutInflater.java:353) at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:249) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106) at com.example.admin.mobile_grocery.Baby_Diaper.onCreate(Baby_Diaper.java:29) at android.app.Activity.performCreate(Activity.java:5188) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)            at android.app.ActivityThread.access$700(ActivityThread.java:140)            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)            at android.os.Handler.dispatchMessage(Handler.java:99)            at android.os.Looper.loop(Looper.java:137)            at android.app.ActivityThread.main(ActivityThread.java:4921)            at java.lang.reflect.Method.invokeNative(Native Method)            at java.lang.reflect.Method.invoke(Method.java:511)            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)            at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Constructor.constructNative(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:417) at android.view.LayoutInflater.createView(LayoutInflater.java:593)            at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)            at android.view.LayoutInflater.onCreateView(LayoutInflater.java:666)            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691)            at android.view.LayoutInflater.rInflate(LayoutInflater.java:752)            at android.view.LayoutInflater.inflate(LayoutInflater.java:495)            at android.view.LayoutInflater.inflate(LayoutInflater.java:397)            at android.view.LayoutInflater.inflate(LayoutInflater.java:353)            at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:249)            at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106)            at com.example.admin.mobile_grocery.Baby_Diaper.onCreate(Baby_Diaper.java:29)            at android.app.Activity.performCreate(Activity.java:5188)            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)            at android.app.ActivityThread.access$700(ActivityThread.java:140)            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)            at android.os.Handler.dispatchMessage(Handler.java:99)            at android.os.Looper.loop(Looper.java:137)            at android.app.ActivityThread.main(ActivityThread.java:4921)            at java.lang.reflect.Method.invokeNative(Native Method)            at java.lang.reflect.Method.invoke(Method.java:511)            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)            at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.OutOfMemoryError at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:636) at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:484) at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:813) at android.content.res.Resources.loadDrawable(Resources.java:2277) at android.content.res.TypedArray.getDrawable(TypedArray.java:601) at android.widget.ImageView.<init>(ImageView.java:126) at android.widget.ImageView.<init>(ImageView.java:116)            at java.lang.reflect.Constructor.constructNative(Native Method)            at java.lang.reflect.Constructor.newInstance(Constructor.java:417)            at android.view.LayoutInflater.createView(LayoutInflater.java:593)            at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)            at android.view.LayoutInflater.onCreateView(LayoutInflater.java:666)            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691)            at android.view.LayoutInflater.rInflate(LayoutInflater.java:752)            at android.view.LayoutInflater.inflate(LayoutInflater.java:495)            at android.view.LayoutInflater.inflate(LayoutInflater.java:397)            at android.view.LayoutInflater.inflate(LayoutInflater.java:353)            at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:249)            at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106)            at com.example.admin.mobile_grocery.Baby_Diaper.onCreate(Baby_Diaper.java:29)            at android.app.Activity.performCreate(Activity.java:5188)            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)            at android.app.ActivityThread.access$700(ActivityThread.java:140)            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)            at android.os.Handler.dispatchMessage(Handler.java:99)            at android.os.Looper.loop(Looper.java:137)            at android.app.ActivityThread.main(ActivityThread.java:4921)            at java.lang.reflect.Method.invokeNative(Native Method)            at java.lang.reflect.Method.invoke(Method.java:511)            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)            at dalvik.system.NativeStart.main(Native Method) 

希望有人会提供他们的知识来帮助我解决这个问题。 当我单击logcat中的Java时，它在这里指向我setContentView（R.layout.activity_baby__diaper）;

Answer 1

你正在得到OutOfMemoryError

Caused by: java.lang.OutOfMemoryError

这可能是因为您在ImageView中使用了非常高分辨率的图像。 尝试使用较小的图像并检查结果。

Answer 2

如堆栈跟踪所示，您将收到OutOfMemory异常。 您的图像较大且具有高分辨率，解决方案很简单-将图像添加到drawable-xxhdpi并查看是否有帮助。

请记住，默认的基本Android密度是mdpi，因此导致操作系统对已经很大的图像进行重大调整。

Answer 3

我认为您已在布局中加载了高分辨率图像。 请使用缩小图像而不是当前图像。

如果无法解决该问题，请尝试以下代码。

使用以下功能缩小您的实际图像：

public static Bitmap scaleImage(String path, int reqHeight, int reqWidth) throws Throwable
{
    Bitmap bitMap = null;
    System.gc();
    File file = new File(path);
    if (file.exists())
    {
        BitmapFactory.Options bitMapFactoryOptions = new BitmapFactory.Options();
        bitMapFactoryOptions.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(file.getPath(), bitMapFactoryOptions);
        bitMapFactoryOptions.inSampleSize = calculateInSampleSize(bitMapFactoryOptions, reqHeight, reqWidth);
        bitMapFactoryOptions.inJustDecodeBounds = false;
        bitMap = BitmapFactory.decodeFile(file.getPath(), bitMapFactoryOptions);
    }
    else
    {
        throw new Throwable(path + " not found or not a valid image");
    }
    return bitMap;
}


private static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight)
    {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;
        if (height > reqHeight || width > reqWidth)
        {
            final int halfHeight = height / 2;
            final int halfWidth = width / 2;
            // Calculate the largest inSampleSize value that is a power of 2 and keeps both
            // height and width larger than the requested height and width.
            while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth)
            {
                inSampleSize *= 2;
            }
        }
        return inSampleSize;
    }

您还可以使用以下功能缩小资源图像的比例：

public static Bitmap scaleImage(Context context, int resourceId, int width, int height, int sampleSize) throws Throwable
    {
        if (resourceId != 0)
        {
            BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
            // if Sample size 4 then image size (Original-Width/4) X
            // (Original-Heigth/4)
            bmpFactoryOptions.inSampleSize = sampleSize;
            Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resourceId, bmpFactoryOptions);
            if (bitmap != null)
            {
                // this line convert image size given to width X height
                return Bitmap.createScaledBitmap(bitmap, width, height, true);
            }
        }
        return null;
    }

在布局中替换imageview容器

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/ctgry_bckgrnd_dpr"
    android:scaleType="centerCrop"/>

在您的活动中编写以下代码

Bitmap bitmap;
ImageView diaper_bckgrnd;
diaper_bckgrnd = (ImageView) findViewById(R.id.ctgry_bckgrnd_dpr);

bitmap = scaleImage(context, getResources().getDrawable(R.drawable.category_background),500,500,2);
diaper_bckgrnd.setImageBitmap(bitmap);