Android调用系统相机和文件浏览器

//拍照功能,调用系统的相机功能

Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent2, 1);

获取拍照的图像

protected void onActivityResult(int requestCode, int resultCode, Intent data) 

{

try
{
　　Bitmap bitmap = (Bitmap)data.getExtras().get("data");
　　personImg.setImageBitmap(CircleImage(bitmap));
　　File file=new File(Environment.getExternalStorageDirectory().getAbsolutePath());
　　FileOutputStream out=new FileOutputStream(file.getAbsolutePath()+"/person.jpg");
　　//保存图片
　　bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);

} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
super.onActivityResult(requestCode, resultCode, data);
}

调用系统文件浏览器

Intent intent=new Intent();
        //制定内容的类型为图像
        intent.setType("image/*");
        //制定调用系统内容的action
        intent.setAction(Intent.ACTION_GET_CONTENT);
        //显示系统相册
        startActivityForResult(intent, 0);

获取选择的内容

protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        try {
            Uri uri=data.getData();
            //获取封装相册图像的数据
            Cursor cursor=getContentResolver().query(uri, null, null, null, null);
            cursor.moveToFirst();
            //获取选中相册的文件路径
            String filePath=cursor.getString(1);
            cursor.close();
            //创建bitmap对象
            Bitmap map=BitmapFactory.decodeFile(filePath);
            File file=new File("/sdcard/img.jpg");
            FileOutputStream out=new FileOutputStream(file);
            //保存图片
            map.compress(Bitmap.CompressFormat.JPEG, 100, out);
        } catch (FileNotFoundException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }