如果用户向左或向右按​​压太多,则应用为FC

时间:2014-01-25 06:19:11

标签: java android eclipse android-layout

我有以下XML:

<LinearLayout
    android:id="@+id/llColorSpect"
    android:layout_width="match_parent"
    android:layout_height="@dimen/color_scheme_height"
    android:orientation="vertical"
    android:background="@drawable/colorspect"
    android:layout_marginRight="@dimen/activity_horizontal_margin"
    android:layout_marginLeft="@dimen/activity_horizontal_margin"
    android:layout_marginBottom="@dimen/seek_bar_margin"
    android:layout_below="@+id/tvBGColor" >
    <RelativeLayout
        android:id="@+id/rlColorSpect"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
        <ImageView
            android:id="@+id/ivSquare"
            android:layout_width="@dimen/title_text_pad"
            android:layout_height="@dimen/title_text_pad"
            android:layout_alignParentBottom="true"
            android:scaleType="fitXY"
            android:src="@drawable/esquare" />
    </RelativeLayout>
</LinearLayout>

我的部分Java代码:

View.OnTouchListener llTouch = new View.OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        int x = (int)event.getX();
        int y = (int)event.getY();
        int action = event.getAction();
        int pixel = bitmap.getPixel((int)x,(int) y);

        switch (action & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_DOWN: {
                Log.i("COORDINATES","Touch coordinates : x" + String.valueOf(x) + "y" + String.valueOf(y));
                ivTouch.setX(x);
                ivTouch.setY(y);
                int redValue = Color.red(pixel);
                int blueValue = Color.blue(pixel);
                int greenValue = Color.green(pixel);
                Log.d("Colors","R:" +redValue +" G:" +greenValue+" B:" + blueValue);
                sbRed.setProgress(redValue);
                sbGreen.setProgress(greenValue);
                sbBlue.setProgress(blueValue);
                dispHVal();
            break;
            }
            case MotionEvent.ACTION_MOVE:{
                Log.i("COORDINATES","Touch coordinates : x" + String.valueOf(x) + "y" + String.valueOf(y));
                ivTouch.setX(x);
                ivTouch.setY(y);
                int redValue = Color.red(pixel);
                int blueValue = Color.blue(pixel);
                int greenValue = Color.green(pixel);
                Log.d("Colors","R:" +redValue +" G:" +greenValue+" B:" + blueValue);
                sbRed.setProgress(redValue);
                sbGreen.setProgress(greenValue);
                sbBlue.setProgress(blueValue);
                dispHVal();
            break;
            }
        }
        return true;
    }
};

我遇到的问题。

  1. 按住布局以获取其某些部分的坐标(如果我一直向/向左或向右拖动),我的应用程序FC。我在下面添加了LogCat:
  2.   

    01-25 01:13:21.059:E / AndroidRuntime(13345):致命异常:主要   01-25 01:13:21.059:E / AndroidRuntime(13345):   java.lang.IllegalArgumentException:x必须是&lt; bitmap.width()01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.graphics.Bitmap.checkPixelAccess(Bitmap.java:1155)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.graphics.Bitmap.getPixel(Bitmap.java:1107)01-25 01:13:21.059:   E / AndroidRuntime(13345):at   com.test.testing.MainActivity $ 1.onTouch(MainActivity.java:98)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.View.dispatchTouchEvent(View.java:7241)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2168)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1903)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)01-25   01:13:21.059:E / AndroidRuntime(13345):at   com.android.internal.policy.impl.PhoneWindow $ DecorView.superDispatchTouchEvent(PhoneWindow.java:1953)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1405)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.app.Activity.dispatchTouchEvent(Activity.java:2410)01-25   01:13:21.059:E / AndroidRuntime(13345):at   com.android.internal.policy.impl.PhoneWindow $ DecorView.dispatchTouchEvent(PhoneWindow.java:1901)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.View.dispatchPointerEvent(View.java:7426)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3220)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3165)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4292)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4271)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.ViewRootImpl $ WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4363)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   android.os.MessageQueue.nativePollOnce(Native Method)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.os.MessageQueue.next(MessageQueue.java:125)01-25   01:13:21.059:E / AndroidRuntime(13345):at   android.os.Looper.loop(Looper.java:124)01-25 01:13:21.059:   E / AndroidRuntime(13345):at   android.app.ActivityThread.main(ActivityThread.java:5195)01-25   01:13:21.059:E / AndroidRuntime(13345):at   java.lang.reflect.Method.invokeNative(Native Method)01-25   01:13:21.059:E / AndroidRuntime(13345):at   java.lang.reflect.Method.invoke(Method.java:511)01-25 01:13:21.059:   E / AndroidRuntime(13345):at   com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:795)   01-25 01:13:21.059:E / AndroidRuntime(13345):at   com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)01-25   01:13:21.059:E / AndroidRuntime(13345):at   dalvik.system.NativeStart.main(原生方法)

    我想让用户能够一直向左,向上,向右和向下拖动。如何修改上面的代码来实现呢?感谢!!!

1 个答案:

答案 0 :(得分:1)

  1. 在访问位图之前将x和y日志记录移动到以查看返回的值。

  2. 根据堆栈跟踪,不要使用超出位图尺寸的x和y值调用getPixel。