对话框 AlterDialog

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("尊敬的用户");
builder.setMessage("你真的要卸载我吗？");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {

    }
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {

    }
});
AlertDialog alert = builder.create();
alert.show();

带选项的对话框：

            AlertDialog.Builder builder=new AlertDialog.Builder(InfoActivity.this);
            builder.setTitle("头像");
            builder.setNegativeButton("取消", new DialogInterface.OnClickListener(){
                @Override
                public void onClick(DialogInterface dialog, int which) {

                }
            });
            String[] items=new String[]{"相册上传","拍摄上传","下载头像"};
            builder.setItems(items, new DialogInterface.OnClickListener(){
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if(which == 0){
                        //从相册获取图片
//                        Intent intent = new Intent(Intent.ACTION_PICK, null);
//                        intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);
//                        startActivityForResult(intent, PHOTO_ZOOM);
                    }
                    else if(which == 1){
                        //从拍照获取图片
//                        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//                        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment
//                                .getExternalStorageDirectory(),"temp.jpg")));
//                        startActivityForResult(intent, PHOTO_GRAPH);
                    }
                    else if(which == 2){
//                        Matrix m = image.getImageMatrix();
                    }
                }
            });
            builder.create().show();