I'm trying to create a custom view - finger paint, and I'm having trouble with this error and I don't know how to fix it. Can anybody tell me what is wrong?
LogCat:
08-04 08:34:01.171: E/AndroidRuntime(15664): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.boenka.mk/com.boenka.mk.Draw}: android.view.InflateException: Binary XML file line #9: Error inflating class com.boenka.mk.DrawPanel
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.ActivityThread.access$600(ActivityThread.java:123)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.os.Handler.dispatchMessage(Handler.java:99)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.os.Looper.loop(Looper.java:137)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.ActivityThread.main(ActivityThread.java:4424)
08-04 08:34:01.171: E/AndroidRuntime(15664): at java.lang.reflect.Method.invokeNative(Native Method)
08-04 08:34:01.171: E/AndroidRuntime(15664): at java.lang.reflect.Method.invoke(Method.java:511)
08-04 08:34:01.171: E/AndroidRuntime(15664): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
08-04 08:34:01.171: E/AndroidRuntime(15664): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
08-04 08:34:01.171: E/AndroidRuntime(15664): at dalvik.system.NativeStart.main(Native Method)
08-04 08:34:01.171: E/AndroidRuntime(15664): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class com.boenka.mk.DrawPanel
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
08-04 08:34:01.171: E/AndroidRuntime(15664): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.Activity.setContentView(Activity.java:1835)
08-04 08:34:01.171: E/AndroidRuntime(15664): at com.boenka.mk.Draw.onCreate(Draw.java:49)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.Activity.performCreate(Activity.java:4465)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
08-04 08:34:01.171: E/AndroidRuntime(15664): ... 11 more
08-04 08:34:01.171: E/AndroidRuntime(15664): Caused by: java.lang.ClassNotFoundException: com.boenka.mk.DrawPanel
08-04 08:34:01.171: E/AndroidRuntime(15664): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
08-04 08:34:01.171: E/AndroidRuntime(15664): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
08-04 08:34:01.171: E/AndroidRuntime(15664): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.createView(LayoutInflater.java:552)
08-04 08:34:01.171: E/AndroidRuntime(15664): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
08-04 08:34:01.171: E/AndroidRuntime(15664): ... 21 more
Here is my DrawingPanel class:
public class DrawingPanel extends View implements OnTouchListener {
private Canvas mCanvas;
private Path mPath;
private Paint mPaint, mBitmapPaint;
private ArrayList<PathPoints> paths = new ArrayList<PathPoints>();
private ArrayList<PathPoints> undonePaths = new ArrayList<PathPoints>();
private Bitmap mBitmap;
private int x, y;
private int color;
public DrawingPanel(Context context, AttributeSet attrs) {
super(context, attrs);
this.color = Color.BLACK;
// setFocusable(true);
// setFocusableInTouchMode(true);
this.setOnTouchListener(this);
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setDither(true);
mPaint.setColor(color);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(3);
mPaint.setTextSize(30);
mPath = new Path();
paths.add(new PathPoints(mPath, color, false));
mCanvas = new Canvas();
}
public void colorChanged(int color) {
this.color = color;
mPaint.setColor(color);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// mBitmap = AddReportItemActivity.mPhoto;
float xscale = (float) w / (float) mBitmap.getWidth();
float yscale = (float) h / (float) mBitmap.getHeight();
if (xscale > yscale) // make sure both dimensions fit (use the
// smaller scale)
xscale = yscale;
float newx = (float) w * xscale;
float newy = (float) h * xscale; // use the same scale for both
// dimensions
// if you want it centered on the display (black borders)
mBitmap = Bitmap.createScaledBitmap(mBitmap, this.getWidth(),
this.getHeight(), true);
// mCanvas = new Canvas(mBitmap);
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
for (PathPoints p : paths) {
mPaint.setColor(p.getColor());
Log.v("", "Color code : " + p.getColor());
if (p.isTextToDraw()) {
canvas.drawText(p.textToDraw, p.x, p.y, mPaint);
} else {
canvas.drawPath(p.getPath(), mPaint);
}
}
}
private float mX, mY;
private static final float TOUCH_TOLERANCE = 0;
private void touch_start(float x, float y) {
mPath.reset();
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
// commit the path to our offscreen
mCanvas.drawPath(mPath, mPaint);
// kill this so we don't double draw
mPath = new Path();
paths.add(new PathPoints(mPath, color, false));
}
@Override
public boolean onTouch(View arg0, MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
public void onClickUndo() {
if (paths.size() > 0) {
undonePaths.add(paths.remove(paths.size() - 1));
invalidate();
} else {
}
// toast the user
}
public void onClickRedo() {
if (undonePaths.size() > 0) {
paths.add(undonePaths.remove(undonePaths.size() - 1));
invalidate();
} else {
}
}
class PathPoints {
private Path path;
// private Paint mPaint;
private int color;
private String textToDraw;
private boolean isTextToDraw;
private int x, y;
public PathPoints(Path path, int color, boolean isTextToDraw) {
this.path = path;
this.color = color;
this.isTextToDraw = isTextToDraw;
}
public PathPoints(int color, String textToDraw, boolean isTextToDraw,
int x, int y) {
this.color = color;
this.textToDraw = textToDraw;
this.isTextToDraw = isTextToDraw;
this.x = x;
this.y = y;
}
public Path getPath() {
return path;
}
public void setPath(Path path) {
this.path = path;
}
public int getColor() {
return color;
}
public void setColor(int color) {
this.color = color;
}
public String getTextToDraw() {
return textToDraw;
}
public void setTextToDraw(String textToDraw) {
this.textToDraw = textToDraw;
}
public boolean isTextToDraw() {
return isTextToDraw;
}
public void setTextToDraw(boolean isTextToDraw) {
this.isTextToDraw = isTextToDraw;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
}
public int getColor() {
return color;
}
public void clear() {
invalidate();
}
public void setBrushSize(float size) {
mPaint.setStrokeWidth(size);
}
public float getBrushSize() {
return mPaint.getStrokeWidth();
}
}
And my XML layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/signImageParent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:orientation="vertical" >
<com.boenka.mk.DrawingPanel
android:id="@+id/signatureview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<LinearLayout
android:gravity="center_vertical"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:layout_alignParentLeft="true"
android:id="@+id/control_panel"
android:layout_width="50dp"
android:background="#00AEEC"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:layout_gravity="center_horizontal"
android:id="@+id/colorPicker"
android:background="@drawable/color_picker"
android:layout_width="40dp"
android:layout_margin="5dp"
android:layout_height="40dp" />
<Button
android:layout_gravity="center_horizontal"
android:id="@+id/save_img"
android:layout_margin="5dp"
android:background="@drawable/save_as"
android:layout_width="40dp"
android:layout_height="40dp" />
<Button
android:layout_gravity="center_horizontal"
android:id="@+id/brush_size"
android:layout_margin="5dp"
android:background="@drawable/brush_size"
android:layout_width="40dp"
android:layout_height="40dp" />
<Button
android:layout_gravity="center_horizontal"
android:id="@+id/settings"
android:layout_margin="5dp"
android:background="@drawable/setting"
android:layout_width="40dp"
android:layout_height="40dp" />
<Button
android:layout_gravity="center_horizontal"
android:id="@+id/previous"
android:layout_margin="5dp"
android:background="@drawable/previous"
android:layout_width="40dp"
android:layout_height="40dp" />
</LinearLayout>
<ImageView
android:id="@+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_toRightOf="@+id/control_panel" />
</RelativeLayout>
From the posted Logcat output:
Caused by: android.view.InflateException: Binary XML file line #9:
Error inflating class com.boenka.mk.DrawPanel
....
....
Caused by: java.lang.ClassNotFoundException: com.boenka.mk.DrawPanel
It seems that you have accidentally misspelled the custom view's name in your xml layout file:
<com.boenka.mk.DrawPanel
android:id="@+id/signatureview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
See if changing com.boenka.mk.DrawPanel to com.boenka.mk.DrawingPanel fixes the problem.
来源：https://stackoverflow.com/questions/18040385/android-view-inflateexception