Android 下载谷歌静态地图后,你能在画布上绘制它吗?
我正在使用下面的类下载一个特定的地图,我想将它与其他位图一起绘制到画布上,但当我这样做时,只有地图不会显示。 我知道地图正在下载,我是否必须使其可变,我不完全确定这里发生了什么Android 下载谷歌静态地图后,你能在画布上绘制它吗?,android,canvas,bitmap,google-static-maps,Android,Canvas,Bitmap,Google Static Maps,我正在使用下面的类下载一个特定的地图,我想将它与其他位图一起绘制到画布上,但当我这样做时,只有地图不会显示。 我知道地图正在下载,我是否必须使其可变,我不完全确定这里发生了什么 class TheTask extends AsyncTask<Void,Void,Void> { File mediaFile = new File(MenuScreen.mediaStorageDir.getPath() + File.separator + "I
class TheTask extends AsyncTask<Void,Void,Void>
{
File mediaFile = new File(MenuScreen.mediaStorageDir.getPath() + File.separator +
"IMG_"+ MenuScreen.timeStamp + ".png");
File mediaFile1 = new File(MenuScreen.mediaStorageDir.getPath() + File.separator +
"IMG_"+ MenuScreen.timeStamp + "1" + ".png");
File mediaFile2 = new File(MenuScreen.mediaStorageDir.getPath() + File.separator +
"IMG_"+ MenuScreen.timeStamp + "2" + ".png");
Bitmap bitmap;
protected void onPreExecute()
{ super.onPreExecute();
//display progressdialog.
}
protected Void doInBackground(Void ...params)
{
bitmap = getGoogleMapThumbnail(MainActivity.latlng.latitude,MainActivity.latlng.longitude);
FileOutputStream outStream;
try {
outStream = new FileOutputStream(mediaFile2);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//mapView.setDrawingCacheEnabled(enabled);
//mediaFile = new File(MenuScreen.mediaStorageDir.getPath() + File.separator +
// "IMG_"+ MenuScreen.timeStamp + ".jpg");
return null;
}
protected void onPostExecute(Void result)
{
super.onPostExecute(result);
Bitmap finished;
String path = mediaFile1.getAbsolutePath();
String path1 = mediaFile2.getAbsolutePath();
Bitmap map = BitmapFactory.decodeFile(path1);
Bitmap photo = BitmapFactory.decodeFile(path);
Paint into = new Paint();
into.setFilterBitmap(true);
into.setColor(Color.BLACK);
into.setTextSize(25);
into.setUnderlineText(true);
into.setTypeface(Typeface.DEFAULT_BOLD);
Bitmap datetime = Bitmap.createBitmap(200,200,Bitmap.Config.ARGB_8888);
Canvas can = new Canvas(datetime);
can.drawColor(Color.WHITE);
can.drawText(MainActivity.curDate, 0, 35, into);
can.drawText(MainActivity.curTime, 0, 70, into);
if(photo.getWidth() > photo.getHeight()){
finished = Bitmap.createBitmap(480,720,Bitmap.Config.ARGB_8888);
Canvas ca = new Canvas(finished);
ca.drawColor(Color.WHITE);
ca.drawBitmap(map,0, 0, null);
ca.drawBitmap(datetime, 0, 0, null);
//ca.drawBitmap(bm, new Rect(0,0, bm.getWidth(), bm.getHeight()),new Rect(280,0,480,200) , null);
ca.drawBitmap(photo, 0, 400, null);
}else{
finished = Bitmap.createBitmap(720,480,Bitmap.Config.ARGB_8888);
Canvas ca = new Canvas(finished);
ca.drawColor(Color.WHITE);
ca.drawBitmap(map, 320, 0, null);
ca.drawBitmap(datetime, 320, 0, null);
//ca.drawBitmap(bm, new Rect(0,0, bm.getWidth(), bm.getHeight()),new Rect(320,280,520,480) , null);
ca.drawBitmap(photo, 0, 0, null);
}
mediaFile1.delete();
mediaFile2.delete();
FileOutputStream outStream;
try {
outStream = new FileOutputStream(mediaFile);
finished.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//sendBroadcast(new Intent(
// Intent.ACTION_MEDIA_MOUNTED,
// Uri.parse("file://" + Environment.getExternalStorageDirectory())));
//dismiss progressdialog.
//update ui
}
public static Bitmap getGoogleMapThumbnail(double lati, double longi){
String URL = "http://maps.google.com/maps/api/staticmap?center=" +lati + "," + longi + "&zoom=15&size=200x200&sensor=false";
Bitmap bmp = null;
bmp = getBitmapFromURL(URL);
/*HttpClient httpclient = new DefaultHttpClient();
HttpGet request = new HttpGet(URL);
InputStream in = null;
try {
in = httpclient.execute(request).getEntity().getContent();
bmp = BitmapFactory.decodeStream(in);
in.close();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
return bmp;
}
public static Bitmap getBitmapFromURL(String src) {
try {
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
class任务扩展异步任务
{
File mediaFile=新文件(MenuScreen.mediaStorageDir.getPath()+File.separator+
“IMG_”+MenuScreen.timeStamp+“.png”);
File mediaFile1=新文件(MenuScreen.mediaStorageDir.getPath()+File.separator+
“IMG_”+MenuScreen.timeStamp+“1”+“.png”);
File mediaFile2=新文件(MenuScreen.mediaStorageDir.getPath()+File.separator+
“IMG_”+MenuScreen.timeStamp+“2”+“.png”);
位图;
受保护的void onPreExecute()
{super.onPreExecute();
//显示进度对话框。
}
受保护的Void doInBackground(Void…参数)
{
位图=getGoogleMapThumbnail(MainActivity.latlng.latitude,MainActivity.latlng.longitude);
FileOutputStream扩展流;
试一试{
outStream=新文件OutputStream(mediaFile2);
compress(bitmap.CompressFormat.PNG,100,扩展);
冲水;
exptream.close();
}catch(filenotfounde异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
//mapView.setDrawingCacheEnabled(已启用);
//mediaFile=新文件(MenuScreen.mediaStorageDir.getPath()+File.separator+
//“IMG_”+MenuScreen.timeStamp+”.jpg”);
返回null;
}
受保护的void onPostExecute(void结果)
{
super.onPostExecute(结果);
位图完成;
字符串路径=mediaFile1.getAbsolutePath();
字符串路径1=mediaFile2.getAbsolutePath();
位图映射=位图工厂.decodeFile(路径1);
位图照片=BitmapFactory.decodeFile(路径);
绘制成=新的绘制();
into.setFilterBitmap(true);
into.setColor(Color.BLACK);
进入.setTextSize(25);
into.setUnderlineText(true);
into.setTypeface(Typeface.DEFAULT_BOLD);
Bitmap datetime=Bitmap.createBitmap(200200,Bitmap.Config.ARGB_8888);
Canvas can=新画布(日期时间);
can.drawColor(颜色:白色);
can.drawText(MainActivity.curDate,0,35,into);
can.drawText(MainActivity.curTime,0,70,into);
if(photo.getWidth()>photo.getHeight()){
finished=Bitmap.createBitmap(480720,Bitmap.Config.ARGB_8888);
画布ca=新画布(已完成);
ca.drawColor(颜色为白色);
ca.drawBitmap(map,0,0,null);
ca.drawBitmap(日期时间,0,0,null);
//ca.drawBitmap(bm,新矩形(0,0,bm.getWidth(),bm.getHeight()),新矩形(280,0480200),null);
ca.drawBitmap(照片,0,400,空);
}否则{
finished=Bitmap.createBitmap(720480,Bitmap.Config.ARGB_8888);
画布ca=新画布(已完成);
ca.drawColor(颜色为白色);
ca.drawBitmap(map,320,0,null);
ca.drawBitmap(日期时间,320,0,空);
//ca.drawBitmap(bm,新矩形(0,0,bm.getWidth(),bm.getHeight()),新矩形(320280520480),null);
ca.drawBitmap(照片,0,0,空);
}
mediaFile1.delete();
mediaFile2.delete();
FileOutputStream扩展流;
试一试{
outStream=新文件OutputStream(mediaFile);
compress(Bitmap.CompressFormat.PNG,100,扩展);
冲水;
exptream.close();
}catch(filenotfounde异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
//发送广播(新意图)(
//意图.行动\媒体\安装,
//parse(“文件:/”+Environment.getExternalStorageDirectory());
//关闭进程对话框。
//更新用户界面
}
公共静态位图getGoogleMapThumbnail(双lati,双longi){
字符串URL=”http://maps.google.com/maps/api/staticmap?center=“+lati+”、“+longi+”&zoom=15&size=200x200&sensor=false”;
位图bmp=null;
bmp=getBitmapFromURL(URL);
/*HttpClient HttpClient=新的DefaultHttpClient();
HttpGet请求=新的HttpGet(URL);
InputStream in=null;
试一试{
in=httpclient.execute(request).getEntity().getContent();
bmp=位图工厂.decodeStream(in);
in.clo
class TheTask extends AsyncTask<Void, Void, Bitmap> {
File mediaFile = new File(MenuScreen.mediaStorageDir.getPath() + File.separator + "IMG_" + MenuScreen.timeStamp + ".png");
File mediaFile1 = new File(MenuScreen.mediaStorageDir.getPath() + File.separator + "IMG_" + MenuScreen.timeStamp + "1" + ".png");
//File mediaFile2 = new File(MenuScreen.mediaStorageDir.getPath() + File.separator + "IMG_" + MenuScreen.timeStamp + "2" + ".png");
Bitmap mapBitmap;
protected void onPreExecute() {
super.onPreExecute();
// display progressdialog.
}
protected Bitmap doInBackground(Void... params) {
mapBitmap = getGoogleMapThumbnail(MainActivity.latlng.latitude, MainActivity.latlng.longitude);
// You could reuse this bitmap. Rather than saving and loading again
return mapBitmap;
}
protected void onPostExecute(Bitmap map) {
super.onPostExecute(map);
Bitmap finished;
String path = mediaFile1.getAbsolutePath();
Bitmap photo = BitmapFactory.decodeFile(path);
Paint into = new Paint();
Paint background = new Paint();
background.setColor(Color.WHITE);
background.setStyle(Style.FILL);
into.setFilterBitmap(true);
into.setColor(Color.BLACK);
into.setTextSize(25);
into.setUnderlineText(true);
into.setTypeface(Typeface.DEFAULT_BOLD);
// Bitmap datetime = Bitmap.createBitmap(200, 200,
// Bitmap.Config.ARGB_8888);
//
// Canvas can = new Canvas(datetime);
// can.drawColor(Color.WHITE);
// can.drawText(MainActivity.curDate, 0, 35, into);
// can.drawText(MainActivity.curTime, 0, 70, into);
Rect rect = new Rect();
if (photo.getWidth() > photo.getHeight()) {
finished = Bitmap.createBitmap(480, 720, Bitmap.Config.ARGB_8888);
Canvas ca = new Canvas(finished);
ca.drawColor(Color.WHITE);
ca.drawBitmap(map, 0, 0, null);
rect.set(0, 0, 200, 200);
ca.drawRect(rect, background);
ca.drawText(MainActivity.curDate, 0, 35, into);
ca.drawText(MainActivity.curTime, 0, 70, into);
ca.drawBitmap(photo, 0, 400, null);
}
else {
finished = Bitmap.createBitmap(720, 480, Bitmap.Config.ARGB_8888);
Canvas ca = new Canvas(finished);
ca.drawColor(Color.WHITE);
ca.drawBitmap(map, 320, 0, null);
ca.save();
ca.translate(320, 0);
rect.set(0, 0, 200, 200);
ca.drawRect(rect, background);
ca.drawText(MainActivity.curDate, 0, 35, into);
ca.drawText(MainActivity.curTime, 0, 70, into);
ca.restore();
ca.drawBitmap(photo, 0, 0, null);
}
mediaFile1.delete();
FileOutputStream outStream;
try {
outStream = new FileOutputStream(mediaFile);
finished.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
public static Bitmap getGoogleMapThumbnail(double lati, double longi) {
String URL = "http://maps.google.com/maps/api/staticmap?center=" + lati + "," + longi + "&zoom=15&size=200x200&sensor=false";
Bitmap bmp = null;
bmp = getBitmapFromURL(URL);
return bmp;
}
public static Bitmap getBitmapFromURL(String src) {
try {
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
}
catch (IOException e) {
e.printStackTrace();
return null;
}
}
}