Android 如何从Edittext获取文本以命名图片
我试图让编辑文本命名已捕获的图片，但当我尝试时，它崩溃了。是否仍有这样做？ 如果我这么做的话，效果会很好Android 如何从Edittext获取文本以命名图片,android,android-edittext,Android,Android Edittext,我试图让编辑文本命名已捕获的图片，但当我尝试时，它崩溃了。是否仍有这样做？ 如果我这么做的话，效果会很好 String photofile="test"+"jpg"; 但不能编辑文本 public class CameraActivity extends AppCompatActivity implements SurfaceHolder.Callback { EditText editText = (EditText)findViewById(R.id.cardnumberbox)
String photofile="test"+"jpg";
public class CameraActivity extends AppCompatActivity implements SurfaceHolder.Callback {
EditText editText = (EditText)findViewById(R.id.cardnumberbox);
File file_image= getDirc();
if (!file_image.exists() && !file_image.mkdirs()){
Toast.makeText(getApplicationContext(),"Kan ikke lave mappe til at gemme billederne",Toast.LENGTH_SHORT).show();
return;
}
String photofile=editText.getText().toString()+".jpg";
String file_name=file_image.getAbsolutePath()+"/" +photofile;
File picfile=new File(file_name);
try {
outputStream=new FileOutputStream(picfile);
outputStream.write(bytes);
outputStream.close();
} catch (FileNotFoundException e){}
catch (IOException ex) {}
finally {
}
Toast.makeText(getApplicationContext(),"Bilederne er gemt",Toast.LENGTH_SHORT).show();
refreshcamera();
refreshgallery(picfile);
}
};
}
private File getDirc(){
File folder= new File("sdcard");
if (!folder.exists()) {
folder.mkdir();
}
return new File(folder,"pics");
}
打算打电话拍摄照片
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
onActivityResult（）方法中获得图像
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
}
}
然后将其写入内存
String photofile=editText.getText().toString().trim()+".jpg";
// The openfileOutput() method creates a file on the phone/internal storage in the context of your application
final FileOutputStream fos = openFileOutput(photofile, Context.MODE_PRIVATE);
// Use the compress method on the BitMap object to write image to the OutputStream
bm.compress(CompressFormat.JPEG, 90, fos);
或者使用此选项在外部存储上进行保存
来自开发者文档
File path = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File file = new File(path, editText.getText().toString().trim()+".jpg");
要阅读它，请使用
Bitmap bitmap = BitmapFactory.decodeFile(file);
我也建议
public class Your_Class_Name extends Activity {
//declaration is here but you can not access because it is still not available in java side
private EditText myEdit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//this is place where you connect all your xml content in java
setContentView(R.layout.Your_XML_FileName);
...
//now you can access everything from xml side suppose and EditText with id edittext
myEdit = (EditText)findViewById(R.id.edittext);
}
}