请问如何裁剪屏幕截图?

Question

>您好，我有一个代码可以截取屏幕截图，然后分享它，它的工作很好 但是我想从顶部和底部裁剪此屏幕截图。 我希望对我有所帮助，因为我是编码新手。 这是我使用它的代码：

share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Bitmap bitmap = takeScreenshot();
saveBitmap(bitmap);
shareIt();
}

public Bitmap takeScreenshot() {
View rootView = findViewById(android.R.id.content).getRootView();
rootView.setDrawingCacheEnabled(true);
return rootView.getDrawingCache();
}
private void saveBitmap(Bitmap bitmap) {
imagePath = new File(Environment.getExternalStorageDirectory() + "/screenshot.png"); ////File imagePath
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
}
private void shareIt() {
Uri myUri = Uri.fromFile(imagePath);
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.setType("image/*");
sharingIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
sharingIntent.putExtra(Intent.EXTRA_STREAM, myUri);
startActivity(Intent.createChooser(sharingIntent, "Share via"));
}
});

displayResults();
}

Answer 1

如果要使用库，可以实现此库。并遵循此代码

来自ArthurHub/Android-image-cropper

安卓清单.xml

<activity android:name="com.theartofdev.edmodo.cropper.CropImageActivity"
android:theme="@style/Base.Theme.AppCompat"/> <!-- optional (needed if default theme has no action bar) -->

启动裁剪图像活动

// start picker to get image for cropping and then use the image in cropping 
activity
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.start(this);
// start cropping activity for pre-acquired image saved on the device
CropImage.activity(imageUri)
.start(this);
// for fragment (DO NOT use `getActivity()`)
CropImage.activity()
.start(getContext(), this);

覆盖活动结果

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
Uri resultUri = result.getUri();
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}