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我正在嘗試構建捕獲圖像的應用程序並將圖像保存爲具有自定義名稱的自定義文件夾,但我無法執行此操作。將圖像保存爲具有自定義名稱的自定義文件夾
這裏是我寫的代碼,請通過代碼並糾正我在哪裏我錯了。
public class MainActivity extends Activity {
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
private static final int CAMERA_REQUEST = 1888;
private ImageView imageView;
private Builder alertDialogBuilder;
final Context context = this;
String name_str;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView)this.findViewById(R.id.imageView1);
Button photoButton = (Button) this.findViewById(R.id.button1);
Button searchButton = (Button) this.findViewById(R.id.button2);
photoButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
});
searchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
}
});
}
public void onActivityResult1(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
System.out.println("Image Path : " + selectedImagePath);
imageView.setImageURI(selectedImageUri);
}
}
}
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);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
final Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
//Creating Alert Dialog Box
AlertDialog.Builder askname = new AlertDialog.Builder(MainActivity.this);
final EditText inputname = new EditText(this);
askname.setMessage("Enter Name");
askname.setView(inputname);
askname.setPositiveButton("OK",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
name_str = inputname.getEditableText().toString();
Toast.makeText(context,name_str,Toast.LENGTH_LONG).show();
dialog.dismiss();
/*if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
//photo = BitmapFactory.decodeByteArray(data,0,data.length);
imageView.setImageBitmap(photo);*/
String file ="/DCIM/VisitingCards/";
File folder = new File(Environment.getExternalStorageDirectory() + file);
System.out.println("File name is :"+folder);
boolean success = true;
if (!folder.exists()) {
success = folder.mkdir();
}
if (success) {
//ON success
System.out.println("Directory Present");
System.out.println("In Success Case");
try {
FileOutputStream out = new FileOutputStream(folder);
photo.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
} else {
//ON failure
System.out.println("Directory not Present");
System.out.println("In Failure Case");
}
System.out.println("Before the Dialog builder");
}
});
askname.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// Canceled.
dialog.dismiss();
}
}); //End of alert.setNegativeButt
askname.show();
}
}
}
它在哪裏失敗?您是否已將'WRITE_EXTERNAL_STORAGE'權限添加到'AndroidManifest.xml'? – mixel