android进入系统相册选择图片

//设置button的点击事件
bt1.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, 1);

            }
        });

//重写onActivityResult

public void onActivityResult(int requestCode, int resultCode,
            final Intent data) {
        if (RESULT_OK == resultCode && 1 == requestCode) {                   
                      //做某些事情
            ...
        super.onActivityResult(requestCode, resultCode, data);
    }