android 调用摄像头返回拍摄图片

1. onclick 调用拍摄页面，

private void intciew() {
    reclerview= (RecyclerView) findViewById(R.id.reclerview);
    button= (Button) findViewById(R.id.button);
    ima= (ImageView) findViewById(R.id.img);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intent,12);
        }
    });
}

2.写入SD卡  根据自己业务需求 图片是否压缩，等其他需求

  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode== Activity.RESULT_OK){
            if (requestCode==12){
                //获得图片原始的地址 没有 压缩  Bitmap bi= (Bitmap) data.getExtras().get("data");
                //将图片保存到SD卡中  FileOutputStream b = null;
                File file = new File("/sdcard/aaaaaaaaaaaaaaaaaaaaaa/");
                //判断文件是否存在  if (!file.exists()){
                    file.mkdirs();// 创建文件夹  }
                Random randon=new Random();
                int aaa = randon.nextInt(222);
                String filename="/sdcard/aaaaaaaaaaaaaaaaaaaaaa/"+aaa+".jpg";
                Log.i("TTT","filename="+filename);
                try {
                    b=new FileOutputStream(filename);
                    //写入文件夹  bi.compress(Bitmap.CompressFormat.JPEG, 100, b);
                    Message message =new Message();
                    message.what=100;
                    han.sendMessage(message);
                    Log.i("TTT","chenggong="+1);
//  } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
                finally {
                    try {
                        b.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
// ima.setImageBitmap(bi);  }

        }
    }

3. 呈现数据，冲SD卡中读取所有的图片，设置adapter 呈现，点击item 删除选中图片，更新视图

private void intResources() {
    final List<String> list = new ArrayList<String>();
    final String path="/sdcard/aaaaaaaaaaaaaaaaaaaaaa/";
    File file=new File(path);
    File[] f=file.listFiles();
    if (f!=null){
        for (int i=0;i<f.length;i++){
            File fe = f[i];
        list.add(fe.getName());
        }
        Log.i("TTT","filename="+list.toString());
        adapter=new Myadapter(reclerview,this,list,path);
        reclerview.setLayoutManager(new LinearLayoutManager(this));
        reclerview.setAdapter(adapter);
        adapter.setOnItemClickListener(new Myadapter.MyItemClickListener() {
            @Override
            public void onItemClick(View view, final int postion) {
                Toast.makeText(MainActivity.this,"postion="+postion,Toast.LENGTH_LONG).show();
                AlertDialog.Builder bu=new AlertDialog.Builder(MainActivity.this);
                bu.setTitle("ss");
                bu.setMessage("555");
                bu.setPositiveButton("shide", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        //获得图片的路径  String name=list.get(postion);
                        String  pathname=path+name;
                        Log.i("TTT","pathname="+pathname);
                        //删除指定名称的图片  File e=new File(pathname);
                        e.delete();
                        //更新adapter  adapter.notifyDataSetChanged();
                    }
                });
                bu.create();
                bu.show();
            }
        });
    }
}