java Android 从文件路径获取图像到位图
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Android get image to Bitmap from filepath
提问by Edvard ?kerberg
I'm trying to set the image from a specific filepath ON THE PHONE. The filepath is to the photo on the phone. the filepath could look like this
/storage/emulated/0/Pictures/picture.jpg
Here is the code.
我正在尝试从电话上的特定文件路径设置图像。文件路径是手机上的照片。文件路径可能看起来像这样
/storage/emulated/0/Pictures/picture.jpg
这是代码。
Bitmap image = null;
//trying to set the image from filepath
try {
image = BitmapFactory.decodeStream((InputStream) new URL(filepath).getContent());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
if (image == null) {
//This becomes true because the image is not set
Toast.makeText(getApplicationContext(),"image == null",Toast.LENGTH_LONG).show();
}
In the end the image is not set.
最后没有设置图像。
回答by AmniX
Use This Method to get Bitmap from Filepath
使用此方法从文件路径中获取位图
public Bitmap getBitmap(String path) {
Bitmap bitmap=null;
try {
File f= new File(path);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
bitmap = BitmapFactory.decodeStream(new FileInputStream(f), null, options);
image.setImageBitmap(bitmap);
} catch (Exception e) {
e.printStackTrace();
}
return bitmap ;
}
回答by Abhishek
try this:
试试这个：
File sd = Environment.getExternalStorageDirectory();
File imageFile = new File(sd+filepath);
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
Bitmap image = BitmapFactory.decodeFile(imageFile.getAbsolutePath(),bmOptions);
回答by Das
Try this,
试试这个，
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 0);
}});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK){
Uri targetUri = data.getData();
textTargetUri.setText(targetUri.toString());
Bitmap bitmap;
try {
bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(targetUri));
targetImage.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
