Android调用系统照相机_android 跳转系统相机页面

调用系统相机和相册上传图片的流程：

1.点击一个按钮触发调用操作。

case R.id.photograph:
    // 拍照
    photograph.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");//调用系统照相机的代码
            // 2判断存储卡是否可以用，可用进行存储
            String tempFileName = "";
            if(type == 1){
                tempFileName = IMAGE_FRONT;
            }else if(type == 2){
                tempFileName = IMAGE_BACK;
            }else if(type == 3){
                tempFileName = IMAGE_HANDS;
            }
      //3从内存卡读取存储的照片，传给请求照片的页面     

 if (hasSdcard()) {
                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri
                        .fromFile(new File(Environment
                                .getExternalStorageDirectory(),
                                tempFileName)));
            }
            startActivityForResult(intent, PHOTO_REQUEST_CAMERA);
        }
    });

//4用onActivityResult（）方法根据不同的请求码保存获得的图片

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) { // resultCode == RESULT_OK表示系统返回的是否成功的判断码

        switch (requestCode) {
            case PHOTO_REQUEST_CAMERA:
                setResult(2001,data);//5用setResult方法把图片保存起来，2001为结果码，data为图片数据。
                finish();//6.该方法一定要写
                break;
            case PHOTO_REQUEST_GALLERY:
                setResult(2002,data);
                finish();
                break;
        }
    }

//7返回前一个界面，根据结果码显示图片。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    try {
        //选择图片