在Android中使用相机捕获图像并使用自定义名称保存

Question

我已经创建了一个将捕获图片并保存在sdcard文件夹中的android应用程序，现在我想使用自定义名称保存图片。

import java.io.ByteArrayOutputStream;
import android.view.Menu;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity {

    private static final int CAMERA_REQUEST = 1888;
    private ImageView imageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.imageView = (ImageView) this.findViewById(R.id.imageView1);
        Button photoButton = (Button) this.findViewById(R.id.button1);

        photoButton.setOnClickListener(new View.OnClickListener() 
        {

            @Override
            public void onClick(View v) 
            {

                Intent cameraIntent = new Intent(
                        android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI.getPath());
                cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, "new-photo-name.jpg");
                startActivityForResult(cameraIntent, CAMERA_REQUEST);
            }
        });
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    {
        if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) 
        {
            Bitmap photo = (Bitmap) data.getExtras().get("data");
            imageView.setImageBitmap(photo);
            MediaStore.Images.Media.insertImage(getContentResolver(), photo,
                    null, null);

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            photo.compress(Bitmap.CompressFormat.JPEG, 100, baos); 
            byte[] b = baos.toByteArray();

        }
    }

这是我用来捕获图像并将其保存在sd卡文件夹中的代码，请帮助我以特定名称保存图像，例如：android.jpeg

Answer 1

File outFile = new File(Environment.getExternalStorageDirectory(), "myname.jpeg");
FileOutputStream fos = new FileOutputStream(outFile);
photo.compress(Bitmap.CompressFormat.JPEG, 100, fos); 
fos.flush();
fos.close();

您还需要在Android清单中添加权限。

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

该代码段将使用名称保存photo内部内容/sdcard``"myname.jpeg"