我在此Android: Free Croping of Image使用此代码裁剪图像。我以这种方式实现它。但是，当我运行应用程序和裁剪图像时，我得到错误： 我在清单中声明它。
10-21 15:09:21.556: E/AndroidRuntime(25037): FATAL EXCEPTION: main
10-21 15:09:21.556: E/AndroidRuntime(25037): android.content.ActivityNotFoundException: Unable to find explicit activity class {android.app.cut/android.app.cut.SomeView$CropActivity}; have you declared this activity in your AndroidManifest.xml?
主要代码：
public class main extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
protected void onResume() {
super.onResume();
setContentView(new SomeView(main.this));
}}
someview class：
public class SomeView extends View implements OnTouchListener {
private Paint paint;
public static List<Point> points;
int DIST = 2;
boolean flgPathDraw = true;
Point mfirstpoint = null;
boolean bfirstpoint = false;
Point mlastpoint = null;
Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_launcher);
Context mContext;
public SomeView(Context c) {
super(c);
mContext = c;
setFocusable(true);
setFocusableInTouchMode(true);
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setStyle(Paint.Style.STROKE);
paint.setPathEffect(new DashPathEffect(new float[] { 10, 20 }, 0));
paint.setStrokeWidth(5);
paint.setColor(Color.WHITE);
this.setOnTouchListener(this);
points = new ArrayList<Point>();
bfirstpoint = false;
}
public SomeView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
setFocusable(true);
setFocusableInTouchMode(true);
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(2);
paint.setColor(Color.WHITE);
this.setOnTouchListener(this);
points = new ArrayList<Point>();
bfirstpoint = false;
}
public void onDraw(Canvas canvas) {
canvas.drawBitmap(bitmap, 0, 0, null);
Path path = new Path();
boolean first = true;
for (int i = 0; i < points.size(); i += 2) {
Point point = points.get(i);
if (first) {
first = false;
path.moveTo(point.x, point.y);
} else if (i < points.size() - 1) {
Point next = points.get(i + 1);
path.quadTo(point.x, point.y, next.x, next.y);
} else {
mlastpoint = points.get(i);
path.lineTo(point.x, point.y);
}
}
canvas.drawPath(path, paint);
}
public boolean onTouch(View view, MotionEvent event) {
// if(event.getAction() != MotionEvent.ACTION_DOWN)
// return super.onTouchEvent(event);
Point point = new Point();
point.x = (int) event.getX();
point.y = (int) event.getY();
if (flgPathDraw) {
if (bfirstpoint) {
if (comparepoint(mfirstpoint, point)) {
// points.add(point);
points.add(mfirstpoint);
flgPathDraw = false;
showcropdialog();
} else {
points.add(point);
}
} else {
points.add(point);
}
if (!(bfirstpoint)) {
mfirstpoint = point;
bfirstpoint = true;
}
}
invalidate();
Log.e("Hi ==>", "Size: " + point.x + " " + point.y);
if (event.getAction() == MotionEvent.ACTION_UP) {
Log.d("Action up*******~~~~~~~>>>>", "called");
mlastpoint = point;
if (flgPathDraw) {
if (points.size() > 12) {
if (!comparepoint(mfirstpoint, mlastpoint)) {
flgPathDraw = false;
points.add(mfirstpoint);
showcropdialog();
}
}
}
}
return true;
}
private boolean comparepoint(Point first, Point current) {
int left_range_x = (int) (current.x - 3);
int left_range_y = (int) (current.y - 3);
int right_range_x = (int) (current.x + 3);
int right_range_y = (int) (current.y + 3);
if ((left_range_x < first.x && first.x < right_range_x)
&& (left_range_y < first.y && first.y < right_range_y)) {
if (points.size() < 10) {
return false;
} else {
return true;
}
} else {
return false;
}
}
public void fillinPartofPath() {
Point point = new Point();
point.x = points.get(0).x;
point.y = points.get(0).y;
points.add(point);
invalidate();
}
public void resetView() {
points.clear();
paint.setColor(Color.WHITE);
paint.setStyle(Style.STROKE);
flgPathDraw = true;
invalidate();
}
private void showcropdialog() {
DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent;
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
// Yes button clicked
// bfirstpoint = false;
intent = new Intent(mContext, CropActivity.class);
intent.putExtra("crop", true);
mContext.startActivity(intent);
break;
case DialogInterface.BUTTON_NEGATIVE:
// No button clicked
intent = new Intent(mContext, CropActivity.class);
intent.putExtra("crop", false);
mContext.startActivity(intent);
bfirstpoint = false;
// resetView();
break;
}
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setMessage("Do you Want to save Crop or Non-crop image?")
.setPositiveButton("Crop", dialogClickListener)
.setNegativeButton("Non-crop", dialogClickListener).show()
.setCancelable(false);
}}
作物类：
public class CropActivity extends Activity {
ImageView compositeImageView;
boolean crop;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.someview);
Bundle extras = getIntent().getExtras();
if (extras != null) {
crop = extras.getBoolean("crop");
}
int widthOfscreen = 0;
int heightOfScreen = 0;
DisplayMetrics dm = new DisplayMetrics();
try {
getWindowManager().getDefaultDisplay().getMetrics(dm);
} catch (Exception ex) {
}
widthOfscreen = dm.widthPixels;
heightOfScreen = dm.heightPixels;
compositeImageView = (ImageView) findViewById(R.id.someview);
Bitmap bitmap2 = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_launcher);
Bitmap resultingImage = Bitmap.createBitmap(widthOfscreen,
heightOfScreen, bitmap2.getConfig());
Canvas canvas = new Canvas(resultingImage);
Paint paint = new Paint();
paint.setAntiAlias(true);
Path path = new Path();
for (int i = 0; i < SomeView.points.size(); i++) {
path.lineTo(SomeView.points.get(i).x, SomeView.points.get(i).y);
}
canvas.drawPath(path, paint);
if (crop) {
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
} else {
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_OUT));
}
canvas.drawBitmap(bitmap2, 0, 0, paint);
compositeImageView.setImageBitmap(resultingImage);
}
}
清单：
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".main"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".CropActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name=".SomeView"
android:label="@string/app_name" >
</activity>
</application>
答案 0 :(得分：2)
您的错误表示未找到活动CropActivity。如果仔细查看错误，您会发现您尝试启动的活动是android.app.cut.SomeView$CropActivity。但是在您的清单中，您为作物活动的路径声明了.CropActivity。
因此，您应该将CropActivity移动到与其他应用或相同的包中的自己的文件中，将您的清单中的声明更改为.SomeView.CropActivity。
答案 1 :(得分：1)
删除您的清单并重新创建它。那应该解决它。
EG在maven中你只需在项目上进行全新安装，它就会自行创建清单。