安卓:显示在img标签捕获图像 [英] Android: Display Captured image in img tag
本文介绍了安卓:显示在img标签捕获图像的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想在HTML页面IMG标记显示拍摄的图像。我可以通过 data.getData()从OnActivityResult事件得到URI值。但我不知道inwhich格式,我可以发送图像和img标签来显示。请人帮忙米
I want to display captured image in img tag in html page. I can get the URI value by data.getData() from the OnActivityResult event. But I dont know inwhich format i can send the image and to display in img tag. Please anyone help m
Camera.java:
Camera.java:
public class Camera extends Activity
{
private static final int CAMERA_REQUEST = 1888;
private String selectedImagePath;
WebView webview;
String fileName = "capturedImage.jpg";
private static Uri mCapturedImageURI;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
webview=(WebView)findViewById(R.id.webView1);
}
public void TakePhoto()
{
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, fileName);
mCapturedImageURI = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Intent cameraIntent = new Intent(ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == RESULT_OK)
{
if (requestCode == CAMERA_REQUEST)
{
selectedImagePath = getPath(mCapturedImageURI);
webview.loadUrl("javascript:ReceivePhoto(\""+selectedImagePath+"\")");
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
HTML:
Html:
function CallBack(resultimage)
{
myimg.src = resultimage;
}
在拍摄照片的活动将被重新装入和放大器;同时启动我的应用程序,它显示等待调试......。我做了错误?任何人都可以请帮我...
After taking the photo activity is reloaded & while starting my application, it shows "Waiting for Debugging....". What mistake i did? can anyone please help me...
推荐答案
有一个解决方案。 : - )
Got a Solution. :-)
public class Camera extends Activity
{
private static final int CAMERA_REQUEST = 1888;
private String selectedImagePath;
WebView webview;
String fileName = "capturedImage.jpg";
FileOutputStream fo;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
webview=(WebView)findViewById(R.id.webView1);
}
public void TakePhoto()
{
Intent cameraIntent = new Intent(ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == RESULT_OK)
{
if (requestCode == CAMERA_REQUEST)
{
Bitmap photo = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
Random randomGenerator = new Random();randomGenerator.nextInt(100);
String newimagename=randomGenerator.toString()+".jpg";
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + newimagename);
try {
f.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//write the bytes in file
try {
fo = new FileOutputStream(f.getAbsoluteFile());
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
fo.write(bytes.toByteArray());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
webview.loadUrl("javascript:ReceivePhoto(\""+f.getAbsolutePath()+"\")");
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
ManifestFile:
ManifestFile:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
这篇关于安卓:显示在img标签捕获图像的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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