Android 更改方向后以编程方式拍摄屏幕截图
我正在开发一个应用程序,它将截图保存为PDF格式,然后通过Google Cloud Print发送打印。一切正常,但我有一个关于屏幕截图方向的问题 对于主体片段,我制作了横向和纵向布局。屏幕截图必须始终是纵向的,所以我们的想法是通过编程将屏幕旋转到纵向,拍摄屏幕截图,然后将屏幕方向设置回传感器。我使用此方法更改配置:Android 更改方向后以编程方式拍摄屏幕截图,android,android-fragments,screenshot,screen-orientation,Android,Android Fragments,Screenshot,Screen Orientation,我正在开发一个应用程序,它将截图保存为PDF格式,然后通过Google Cloud Print发送打印。一切正常,但我有一个关于屏幕截图方向的问题 对于主体片段,我制作了横向和纵向布局。屏幕截图必须始终是纵向的,所以我们的想法是通过编程将屏幕旋转到纵向,拍摄屏幕截图,然后将屏幕方向设置回传感器。我使用此方法更改配置: public void lockScreenOrientation(String orientation) { if (orientation.contains(
public void lockScreenOrientation(String orientation) {
if (orientation.contains("portrait")) {
mActivity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else if (orientation.contains("auto")) {
mActivity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
}
}
屏幕截图和PDF创建发生在由主机片段中的确认对话框触发的异步任务中
if (print) {
new AsyncPDF(mActivity).execute(field_client_name_txt, "birthday");
prefs.edit().putBoolean("Print", false).commit();
}
当方向是纵向时,一切都很好!当必须将方向旋转到纵向以进行屏幕截图和打印时,就会出现问题截图捕获的是横向布局的图像,而不是纵向布局的图像,最终的pdf文件凌乱且被裁剪强>
以下是我的异步任务供参考:
public class AsyncPDF extends AsyncTask<String, Void, Void> {
Activity mActivity;
Context mContext;
private static final int REQUEST_CODE = 4;
private static String SDCARD = Environment.getExternalStorageDirectory().getPath();
private static String DIRECTORY = SDCARD + "/Amorino";
private static String DIR_CACHE = DIRECTORY + "/Cache/";
private static String DIR_BIRTHDAY_ORDERS = DIRECTORY + "/Orders/Birthday/";
private static String DIR_WEDDING_ORDERS = DIRECTORY + "/Orders/Wedding/";
private static String DIR_OTHER_ORDERS = DIRECTORY + "/Orders/Other/";
private static String DIR_PRODUCTION = DIRECTORY + "/Production/";
String pdfName, pdfType = "";
Utils mUtility;
public AsyncPDF(Activity activity) {
this.mActivity = activity;
this.mContext = activity;
}
@Override
protected void onPreExecute() {
mUtility = new Utils(mContext);
Toast.makeText(mActivity, "Αποθήκευση αρχείου...", Toast.LENGTH_SHORT)
.show();
screenCapture();
};
@Override
protected Void doInBackground(String... params) {
pdfName = params[0];
pdfType = params[1];
createPdf();
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
clearCacheFolder();
Toast.makeText(mActivity, "Το αρχείο αποθηκέυτηκε επιτυχώς!",
Toast.LENGTH_SHORT).show();
}
private void screenCapture() {
try {
ScrollView mLayoutRoot = (ScrollView) mActivity
.findViewById(R.id.print_screen_layout);
mLayoutRoot.setDrawingCacheEnabled(true);
mLayoutRoot.buildDrawingCache();
Bitmap mBitmap = mLayoutRoot.getDrawingCache();
File file, f = null;
if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)) {
file = new File(DIR_CACHE);
if (!file.exists()) {
file.mkdirs();
}
f = new File(file.getAbsolutePath() + File.separator
+ "temp_layout" + ".png");
}
FileOutputStream ostream = new FileOutputStream(f);
mBitmap.compress(CompressFormat.PNG, 10, ostream);
ostream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private void createPdf() {
Document document = new Document();
Image header_img, main_img;
InputStream inputStream_header = null;
String current_directory = "";
try {
AssetManager mngr = mContext.getAssets();
if (pdfType.contains("birthday")) {
inputStream_header = mngr.open("header_birthday.png");
current_directory = DIR_BIRTHDAY_ORDERS;
} else if (pdfType.contains("wedding")) {
inputStream_header = mngr.open("header_wedding.png");
current_directory = DIR_WEDDING_ORDERS;
} else if (pdfType.contains("other")) {
inputStream_header = mngr.open("header_order.png");
current_directory = DIR_OTHER_ORDERS;
} else if (pdfType.contains("production")) {
inputStream_header = mngr.open("header_order.png");
current_directory = DIR_PRODUCTION;
}
File file = new File(current_directory);
if (!file.exists()) {
file.mkdirs();
}
PdfWriter.getInstance(document, new FileOutputStream(
current_directory + "/" + pdfName + ".pdf"));
document.open();
Bitmap bmp = BitmapFactory.decodeStream(inputStream_header);
ByteArrayOutputStream stream_header = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream_header);
header_img = Image.getInstance(stream_header.toByteArray());
header_img.scalePercent(24f);
header_img.setAbsolutePosition(-1f, 750f);
document.add(header_img);
Paragraph paragraph = new Paragraph(
header_img.getScaledHeight() + 50f);
document.add(paragraph);
main_img = Image.getInstance(DIR_CACHE
+ "/temp_layout.png");
main_img.scaleToFit(520f, 2000f);
main_img.setAlignment(Image.ALIGN_CENTER);
Log.d("Original Width: ", String.valueOf(main_img.getWidth()));
Log.d("Original Height ", String.valueOf(main_img.getHeight()));
Log.d("Scaled Width: ", String.valueOf(main_img.getScaledWidth()));
Log.d("Scaled Height ", String.valueOf(main_img.getScaledHeight()));
document.add(main_img);
document.close();
File f = new File(current_directory + "/" + pdfName + ".pdf");
printPdf(f, pdfName);
} catch (Exception e) {
e.printStackTrace();
}
}
private void printPdf(File f, String name) {
Uri docUri = Uri.fromFile(f);
Intent printIntent = new Intent(mContext, PrintDialogActivity.class);
printIntent.setDataAndType(docUri, "application/pdf");
printIntent.putExtra("title", name + ".pdf");
mActivity.startActivityForResult(printIntent, REQUEST_CODE);
}
private void clearCacheFolder() {
File dir = new File(DIR_CACHE);
if (dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
new File(dir, children[i]).delete();
}
}
}
public类AsyncPDF扩展AsyncTask{
活动能力;
语境;
私有静态最终整数请求_代码=4;
私有静态字符串SDCARD=Environment.getExternalStorageDirectory().getPath();
私有静态字符串目录=SDCARD+“/Amorino”;
私有静态字符串DIR_CACHE=DIRECTORY+“/CACHE/”;
私有静态字符串DIR_birth_ORDERS=DIRECTORY+“/ORDERS/birth/”;
私有静态字符串DIR_WEDDING_ORDERS=DIRECTORY+“/ORDERS/WEDDING/”;
私有静态字符串DIR_OTHER_ORDERS=DIRECTORY+“/ORDERS/OTHER/”;
私有静态字符串DIR_PRODUCTION=DIRECTORY+“/PRODUCTION/”;
字符串pdfName,pdfType=“”;
UTIL沉默;
公共PDF(活动){
这个。活动=活动;
this.mContext=活动;
}
@凌驾
受保护的void onPreExecute(){
mUtility=新UTIL(mContext);
Toast.makeText(mActivity,“πθεκεεσηαρχεεείΓ…”,Toast.LENGTHοu SHORT)
.show();
截屏();
};
@凌驾
受保护的Void doInBackground(字符串…参数){
pdfName=params[0];
pdfType=params[1];
createPdf();
返回null;
}
@凌驾
受保护的void onProgressUpdate(void…值){
super.onProgressUpdate(值);
}
@凌驾
受保护的void onPostExecute(void结果){
super.onPostExecute(结果);
clearCacheFolder();
Toast.makeText(mActivity,“thetοαρχείαπεοθηκέέτηκεεπιτχώς!”,
吐司。长度(短)。show();
}
私有void截屏(){
试一试{
ScrollView mLayoutRoot=(ScrollView)MacActivity
.findViewById(R.id.打印屏幕布局);
mLayoutRoot.setDrawingCacheEnabled(true);
mLayoutRoot.buildDrawingCache();
位图mBitmap=mLayoutRoot.getDrawingCache();
文件,f=null;
如果(android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_){
文件=新文件(目录缓存);
如果(!file.exists()){
mkdirs()文件;
}
f=新文件(File.getAbsolutePath()+File.separator
+“临时布局”+“.png”);
}
FileOutputStream ostream=新的FileOutputStream(f);
mBitmap.compress(CompressFormat.PNG,10,ostream);
ostream.close();
}捕获(例外e){
e、 printStackTrace();
}
}
私有void createPdf(){
文档=新文档();
图像头\u img,主\u img;
InputStream InputStream_头=null;
字符串current_directory=“”;
试一试{
AssetManager mngr=mContext.getAssets();
if(pdfType.contains(“生日”)){
inputStream_header=mngr.open(“header_birth.png”);
当前目录=目录生日订单;
}else if(pdfType.contains(“婚礼”)){
inputStream_header=mngr.open(“header_.png”);
当前目录=目录;
}else if(pdfType.contains(“其他”)){
inputStream_header=mngr.open(“header_order.png”);
当前目录=目录或其他订单;
}else if(pdfType.contains(“生产”)){
inputStream_header=mngr.open(“header_order.png”);
当前目录=生产目录;
}
文件=新文件(当前目录);
如果(!file.exists()){
mkdirs()文件;
}
getInstance(文档,新文件输出流(
当前_目录+“/”+pdfName+“.pdf”);
document.open();
位图bmp=BitmapFactory.decodeStream(inputStream\u头);
ByteArrayOutputStream_头=新建ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG,100,流标题);
header_img=Image.getInstance(stream_header.toByteArray());
头部图像比例百分比(24f);
收割台安装绝对位置(-1f,750f);
文件。添加(标题\u img);
段落=新段落(
收割台(如getScaledHeight()+50f);
文件.添加(第段);
main\u img=Image.getInstance(DIR\u缓存
+“/temp_layout.png”);
主刻度盘配件(520f,2000f);
主图像设置对齐(图像对齐中心);
Log.d(“原始宽度:”,String.valueOf(main_img.getWidth());
Log.d(“原始高度”,String.valueOf(main_img.getHeight());
Log.d(“缩放宽度:”,String.valueOf(main_img.getScaledWidth());
Log.d(“缩放高度”,String.valueOf(main_img.getScaledHeight());
文件。添加(主界面);
document.close();
文件f=新文件(当前_目录+“/”+pdfName+“.pdf”);
printPdf(f,pdfName);
}捕获(例外e){
e、 printStackTrace();
}
}
私有void printPdf(文件f,字符串名称){
Uri docUri=Uri.fromFile(f);
意向打印意向=新意向(mCo)
public void print(String orientation) {
print = prefs.getBoolean("print", false);
if (print)
if (orientation.contains("portrait")) {
new AsyncPDF(mActivity, v).execute(field_client_name_txt,
"birthday");
} else {
ViewTreeObserver observer = v.getViewTreeObserver();
observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
/* Adds a minimal wait time for the view to settle */
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
new AsyncPDF(mActivity, v).execute(
field_client_name_txt, "birthday");
}
}, 100);
v.getViewTreeObserver().removeOnGlobalLayoutListener(
this);
}
});
}
/* Reset the print flag to false */
prefs.edit().putBoolean("print", false).commit();
}
public void onClick(DialogInterface dialog, int id) {
prefs.edit().putBoolean("print", true).commit();
if (mUtility.getScreenOrientation() == 1)
print("portrait");
else
mUtility.lockScreenOrientation("portrait");
}
});