原文转自：http://blog.csdn.NET/copy_yuan/article/details/51727070
开源项目地址：https://github.com/Yalantis/uCrop
效果预览
app/build.gradle
compile 'com.yalantis:ucrop:1.5.0'
AndroidManifest.xml
android:screenOrientation="portrait" android:theme="@style/Theme.AppCompat.Light.NoActionBar" /> 这里theme可以改成自己的 /** * 启动裁剪 * @param activity 上下文 * @param sourceFilePath 需要裁剪图片的绝对路径 * @param requestCode 比如：UCrop.REQUEST_CROP * @param aspectRatioX 裁剪图片宽高比 * @param aspectRatioY 裁剪图片宽高比 * @return */ public static String startUCrop(Activity activity, String sourceFilePath, int requestCode, float aspectRatioX, float aspectRatioY) { Uri sourceUri = Uri.fromFile(new File(sourceFilePath)); File outDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); if (!outDir.exists()) { outDir.mkdirs(); } File outFile = new File(outDir, System.currentTimeMillis() + ".jpg"); //裁剪后图片的绝对路径 String cameraScalePath = outFile.getAbsolutePath(); Uri destinationUri = Uri.fromFile(outFile); //初始化，第一个参数：需要裁剪的图片；第二个参数：裁剪后图片 UCrop uCrop = UCrop.of(sourceUri, destinationUri); //初始化UCrop配置 UCrop.Options options = new UCrop.Options(); //设置裁剪图片可操作的手势 options.setAllowedGestures(UCropActivity.SCALE, UCropActivity.ROTATE, UCropActivity.ALL); //是否隐藏底部容器，默认显示 options.setHideBottomControls(true); //设置toolbar颜色 options.setToolbarColor(ActivityCompat.getColor(activity, R.color.colorPrimary)); //设置状态栏颜色 options.setStatusBarColor(ActivityCompat.getColor(activity, R.color.colorPrimary)); //是否能调整裁剪框 options.setFreeStyleCropEnabled(true); //UCrop配置 uCrop.withOptions(options); //设置裁剪图片的宽高比，比如16：9 uCrop.withAspectRatio(aspectRatioX, aspectRatioY); //uCrop.useSourceImageAspectRatio(); //跳转裁剪页面 uCrop.start(activity, requestCode); return cameraScalePath; } //设置Toolbar标题 void setToolbarTitle(@Nullable String text) //设置裁剪的图片格式 void setCompressionFormat(@NonNull Bitmap.CompressFormat format) //设置裁剪的图片质量，取值0-100 void setCompressionQuality(@IntRange(from = 0) int compressQuality) //设置最多缩放的比例尺 void setMaxScaleMultiplier(@FloatRange(from = 1.0, fromInclusive = false) float maxScaleMultiplier) //动画时间 void setImageToCropBoundsAnimDuration(@IntRange(from = 100) int durationMillis) //设置图片压缩最大值 void setMaxBitmapSize(@IntRange(from = 100) int maxBitmapSize) //是否显示椭圆裁剪框阴影 void setOvalDimmedLayer(boolean isOval) //设置椭圆裁剪框阴影颜色 void setDimmedLayerColor(@ColorInt int color) //是否显示裁剪框 void setShowCropFrame(boolean show) //设置裁剪框边的宽度 void setCropFrameStrokeWidth(@IntRange(from = 0) int width) //是否显示裁剪框网格 void setShowCropGrid(boolean show) //设置裁剪框网格颜色 void setCropGridColor(@ColorInt int color) //设置裁剪框网格宽 void setCropGridStrokeWidth(@IntRange(from = 0) int width) 经过裁剪，返回结果，这里我一般只需要裁剪后的图片绝对路径（调用上面startUCrop，即返回图片路径），然后调接口上传服务器。 @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == RESULT_OK && requestCode == UCrop.REQUEST_CROP) { final Uri resultUri = UCrop.getOutput(data); } else if (resultCode == UCrop.RESULT_ERROR) { final Throwable cropError = UCrop.getError(data); } }配置uCrop
其他配置
onActivityResult 获取剪切的图片