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我正在编写我的第一个应用程序,其想法是用户在 getText 中输入一个数字,单击一个按钮,将用户输入添加到以前的结果中,并将其显示到屏幕上。我尝试将数据存储在 SharedPreferences 中,当用户按下主页按钮然后返回应用程序时它可以工作,但是如果他们按下后退按钮然后返回应用程序,应用程序就会崩溃。有什么建议吗?

public class Calc extends Activity {

int points = 0;

SharedPreferences data;
public static String filename = "Points";

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    data = getSharedPreferences(filename, 0);

    points = data.getInt("key", 0);

    final TextView myTextView = (TextView) findViewById(R.id.mytextview);

    myTextView.setText("" + points);

    Button Button = (Button) findViewById(R.id.add);
    final EditText Edit = (EditText) findViewById(R.id.input);

    Button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int temp = 0;

            try {
                temp = Integer.parseInt(Edit.getText().toString());
            } catch (NumberFormatException nfe) {
                System.out.println("Could not parse " + nfe);
            }

            points = points + temp;

            if (points > 9999) {
                myTextView.setText("10000+");
            } else {
                myTextView.setText("" + points);
            }

            Edit.setText("");

            SharedPreferences.Editor editor = data.edit();
            editor.putInt("key", points);
            editor.commit();
        }
    });

}
}

崩溃日志:

05-19 03:24:02.352: D/dalvikvm(1120): GC_EXTERNAL_ALLOC freed 759 objects / 55808 bytes in 63ms
05-19 03:24:05.812: D/dalvikvm(1120): GC_EXTERNAL_ALLOC freed 193 objects / 9224 bytes in 50ms
05-19 03:24:08.842: W/KeyCharacterMap(1120): No keyboard for id 0
05-19 03:24:08.842: W/KeyCharacterMap(1120): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
05-19 03:24:11.052: W/IInputConnectionWrapper(1120): showStatusIcon on inactive InputConnection
05-19 03:24:14.952: E/dalvikvm-heap(1120): 16704000-byte external allocation too large for this process.
05-19 03:24:14.999: E/GraphicsJNI(1120): VM won't let us allocate 16704000 bytes
05-19 03:24:15.022: D/AndroidRuntime(1120): Shutting down VM
05-19 03:24:15.061: W/dalvikvm(1120): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
05-19 03:24:15.223: E/AndroidRuntime(1120): FATAL EXCEPTION: main
05-19 03:24:15.223: E/AndroidRuntime(1120): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.Calc}: android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.os.Looper.loop(Looper.java:123)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.ActivityThread.main(ActivityThread.java:4627)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at java.lang.reflect.Method.invokeNative(Native Method)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at java.lang.reflect.Method.invoke(Method.java:521)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at dalvik.system.NativeStart.main(Native Method)
05-19 03:24:15.223: E/AndroidRuntime(1120): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.LayoutInflater.createView(LayoutInflater.java:513)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.LayoutInflater.inflate(LayoutInflater.java:385)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.Activity.setContentView(Activity.java:1647)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at com.example.Calc.onCreate(Calc.java:32)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
05-19 03:24:15.223: E/AndroidRuntime(1120):     ... 11 more
05-19 03:24:15.223: E/AndroidRuntime(1120): Caused by: java.lang.reflect.InvocationTargetException
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.widget.FrameLayout.<init>(FrameLayout.java:79)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at java.lang.reflect.Constructor.constructNative(Native Method)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.LayoutInflater.createView(LayoutInflater.java:500)
05-19 03:24:15.223: E/AndroidRuntime(1120):     ... 21 more
05-19 03:24:15.223: E/AndroidRuntime(1120): Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.Bitmap.nativeCreate(Native Method)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.Bitmap.createBitmap(Bitmap.java:468)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.Bitmap.createBitmap(Bitmap.java:435)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:340)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:488)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:462)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:323)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.content.res.Resources.loadDrawable(Resources.java:1709)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.View.<init>(View.java:1885)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.view.ViewGroup.<init>(ViewGroup.java:291)
05-19 03:24:15.223: E/AndroidRuntime(1120):     at android.widget.FrameLayout.<init>(FrameLayout.java:83)
05-19 03:24:15.223: E/AndroidRuntime(1120):     ... 25 more

主要的.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/background" >

    <ImageView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="75dp"
        android:layout_gravity="center_horizontal|top"
        android:paddingLeft="25dip"
        android:paddingRight="25dip"
        android:src="@drawable/title" />

    <EditText
        android:id="@+id/input"
        android:layout_width="150dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal|bottom"
        android:layout_marginBottom="80dp"
        android:ems="10"
        android:inputType="number" />

    <Button
        android:id="@+id/add"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal|bottom"
        android:layout_marginBottom="20dp"
        android:text="Add Points" />

    <TextView
        android:id="@+id/youHave"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal|top"
        android:layout_marginTop="100dp"
        android:background="#AA968454"
        android:padding="10dp"
        android:text="You have"
        android:textColor="#ffffffff" />

    <TextView
        android:id="@+id/mytextview"
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:layout_gravity="center_horizontal|top"
        android:layout_marginTop="150dp"
        android:background="#AA968454"
        android:gravity="center"
        android:textColor="#ffffffff"
        android:textSize="60dp" />

</FrameLayout>
4

1 回答 1

1

我猜你有关于你的活动的图像。那是什么

“05-19 03:24:15.223: E/AndroidRuntime(1120): 由: java.lang.OutOfMemoryError: bitmap >size 超出 VM 预算引起

尝试使用较小的图像或在将图像加载到位图对象时参考 奇怪的内存不足问题以获得替代解决方案。

我首先建议您删除您的 imageview 以检查这是否是问题所在。如果问题得到纠正,请查看上面链接中的解决方案。

于 2012-05-19T04:55:57.803 回答