（JAVA FILE 1）
public class CropActivity extends Activity implements OnTouchListener {
public static final String RETURN_DATA = "return-data";
public static final String RETURN_DATA_AS_BITMAP = "data";
public static final String ACTION_INLINE_DATA = "inline-data";
private ImageView mImg;
private ImageView mTemplateImg;
// private static ProgressDialog mProgressDialog;
private Matrix mMatrix = new Matrix();
private float mScaleFactor = 0.8f;
private float mRotationDegrees = 0.f;
private float mFocusX = 0.f;
private float mFocusY = 0.f;
private int mImageHeight, mImageWidth;
private ScaleGestureDetector mScaleDetector;
private MoveGestureDetector mMoveDetector;
// Constants
public static final int MEDIA_GALLERY = 1;
public static final int TEMPLATE_SELECTION = 2;
public static final int DISPLAY_IMAGE = 3;
Bitmap profilePic;
String userImageLink;
int cropImageWidth;
int cropImageHeight;
int width, height, w1;
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.crop_activity_layout);
Resources r = getResources();
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
width = dm.widthPixels;
height = dm.heightPixels;
double fWidth = width * (0.70);
Log.d("Width is:- ", ">>>>>>>>>>>>>>>>" + fWidth);
w1 = (int) Math.round(fWidth);
Log.d("Width after roundin is:- ", ">>>>>>>>>>>>>>>>" + width);
cropImageWidth = (int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, w1, r.getDisplayMetrics());
// etc...
cropImageHeight = (int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, w1, r.getDisplayMetrics());
int actionBarHeight = (int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 40, r.getDisplayMetrics());
userImageLink = getIntent().getStringExtra("path");
mImg = (ImageView) findViewById(R.id.cp_img);
mTemplateImg = (ImageView) findViewById(R.id.cp_face_template);
mImg.setOnTouchListener(this);
// Get screen size in pixels.
// DisplayMetrics metrics = new DisplayMetrics();
// getWindowManager().getDefaultDisplay().getMetrics(metrics);
// mScreenWidth = metrics.widthPixels;
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int statusBarHeight = (int) Math.ceil(25 * (getResources()
.getDisplayMetrics().density));
Log.e("size.x", "" + size.x);
Log.e("size.y", "" + (size.y - statusBarHeight - actionBarHeight));
// Set template image accordingly to device screen size.
Bitmap faceTemplate = BitmapFactory.decodeResource(getResources(),
R.drawable.four);
faceTemplate = Bitmap.createScaledBitmap(faceTemplate, cropImageWidth,
cropImageHeight, true);
mTemplateImg.setImageBitmap(faceTemplate);
// cropImageWidth = faceTemplate.getWidth();
// cropImageHeight = faceTemplate.getHeight();
// Log.e("getWidth", "" + faceTemplate.getWidth());
// Log.e("getHeight", "" + faceTemplate.getHeight());
File imgFile = new File("" + userImageLink);
if (imgFile.exists()) {
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile
.getAbsolutePath());
// Drawable d = new BitmapDrawable(getResources(), myBitmap);
mImg.setImageBitmap(myBitmap);
mImageHeight = myBitmap.getHeight();
mImageWidth = myBitmap.getWidth();
}
// View is scaled by matrix, so scale initially
mMatrix.postScale(mScaleFactor, mScaleFactor);
mImg.setImageMatrix(mMatrix);
// Setup Gesture Detectors
mScaleDetector = new ScaleGestureDetector(getApplicationContext(),
new ScaleListener());
mMoveDetector = new MoveGestureDetector(getApplicationContext(),
new MoveListener());
// Instantiate Thread Handler.
// mCropHandler = new CropHandler(this);
}
public void onCancelImageButton(View v) {
Intent intent = new Intent();
setResult(RESULT_CANCELED, intent);
finish();
}
public void onCropImageButton(View v) {
// Create progress dialog and display it.
// mProgressDialog = new ProgressDialog(v.getContext());
// mProgressDialog.setCancelable(false);
// mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
// mProgressDialog.setMessage("Please wait...");
// mProgressDialog.show();
// Setting values so that we can retrive the image from
// ImageView multiple times.
mImg.buildDrawingCache(true);
mImg.setDrawingCacheEnabled(true);
mTemplateImg.buildDrawingCache(true);
mTemplateImg.setDrawingCacheEnabled(true);
// Create new thread to crop.
new Thread(new Runnable() {
@Override
public void run() {
Bitmap croppedImg = null;
croppedImg = ImageProcess.cropImage(mImg.getDrawingCache(true),
mTemplateImg.getDrawingCache(true), cropImageWidth,
cropImageHeight);
mImg.setDrawingCacheEnabled(false);
mTemplateImg.setDrawingCacheEnabled(false);
if (croppedImg != null) {
// mProgressDialog.dismiss();
Utils.storeImage(croppedImg, "temp" + Const.ImageExtension);
Intent intent = new Intent();
setResult(RESULT_OK, intent);
finish();
} else {
// mProgressDialog.dismiss();
Intent intent = new Intent();
setResult(RESULT_CANCELED, intent);
finish();
}
}
}).start();
}
@SuppressLint("ClickableViewAccessibility")
public boolean onTouch(View v, MotionEvent event) {
mScaleDetector.onTouchEvent(event);
mMoveDetector.onTouchEvent(event);
float scaledImageCenterX = (mImageWidth * mScaleFactor) / 2;
float scaledImageCenterY = (mImageHeight * mScaleFactor) / 2;
mMatrix.reset();
mMatrix.postScale(mScaleFactor, mScaleFactor);
mMatrix.postRotate(mRotationDegrees, scaledImageCenterX,
scaledImageCenterY);
mMatrix.postTranslate(mFocusX - scaledImageCenterX, mFocusY
- scaledImageCenterY);
ImageView view = (ImageView) v;
view.setImageMatrix(mMatrix);
return true;
}
private class ScaleListener extends
ScaleGestureDetector.SimpleOnScaleGestureListener {
@Override
public boolean onScale(ScaleGestureDetector detector) {
mScaleFactor *= detector.getScaleFactor();
mScaleFactor = Math.max(0.1f, Math.min(mScaleFactor, 10.0f));
return true;
}
}
private class MoveListener extends
MoveGestureDetector.SimpleOnMoveGestureListener {
@Override
public boolean onMove(MoveGestureDetector detector) {
PointF d = detector.getFocusDelta();
mFocusX += d.x;
mFocusY += d.y;
return true;
}
}
}
（JAVA FILE 2）
public class ImageProcess {
public static Bitmap cropImage(Bitmap img, Bitmap templateImage, int width,
int height) {
// Merge two images together.
Bitmap bm = Bitmap.createBitmap(img.getWidth(), img.getHeight(),
Bitmap.Config.ARGB_8888);
Canvas combineImg = new Canvas(bm);
combineImg.drawBitmap(img, 0f, 0f, null);
// Create new blank ARGB bitmap.
Bitmap finalBm = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
// Get the coordinates for the middle of combineImg.
int hMid = bm.getHeight() / 2;
int wMid = bm.getWidth() / 2;
int hfMid = finalBm.getHeight() / 2;
int wfMid = finalBm.getWidth() / 2;
finalBm = Bitmap.createBitmap(bm, (wMid - wfMid), (hMid - hfMid),
width, height);
// Get rid of images that we finished with to save memory.
img.recycle();
templateImage.recycle();
bm.recycle();
return finalBm;
}
}
（XML文件1）
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<innovify.hustl.library.CustomTextView
android:id="@+id/fcp_info_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/cp_info_text"
android:textAppearance="?android:attr/textAppearanceMedium"
android:visibility="gone" />
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1.0" >
<ImageView
android:id="@+id/cp_img"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:contentDescription="@string/cp_image_contentDesc"
android:scaleType="matrix" />
<ImageView
android:id="@+id/cp_face_template"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:contentDescription="@string/cp_template_contentDesc"
android:scaleType="centerInside"
android:src="@drawable/four" />
</FrameLayout>
<LinearLayout
style="?android:attr/buttonBarStyle"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:orientation="horizontal" >
<innovify.hustl.library.CustomButton
style="?android:attr/buttonBarButtonStyle"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_weight="1"
android:background="#e2e2e2"
android:gravity="center"
android:onClick="onCancelImageButton"
android:text="@string/cancel" />
<innovify.hustl.library.CustomButton
style="?android:attr/buttonBarButtonStyle"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_weight="1"
android:background="#e2e2e2"
android:gravity="center"
android:onClick="onCropImageButton"
android:text="@string/cp_crop_button" />
</LinearLayout>
输出：
出现此错误： -
12-08 13:35:38.108: E/AndroidRuntime(15191): FATAL EXCEPTION: Thread-1317
12-08 13:35:38.108: E/AndroidRuntime(15191): java.lang.IllegalArgumentException: x must be >= 0
12-08 13:35:38.108: E/AndroidRuntime(15191): at android.graphics.Bitmap.checkXYSign(Bitmap.java:280)
12-08 13:35:38.108:
答案 0 :(得分：1)
用于imageview中的自定义形状，
你可以使用这个lib
https://github.com/siyamed/android-shape-imageview https://github.com/MostafaGazar/CustomShapeImageView