因为基本没什么难度，直接上代码

示例代码

 public void nornal(View view) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("普通alert框");
        builder.setMessage("这是普通对话框。");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(getApplicationContext(), "你点击了确定", Toast.LENGTH_SHORT).show();
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(getApplicationContext(), "你点击了取消", Toast.LENGTH_SHORT).show();
            }
        });

        builder.show();
    }

    public void single(View view) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("单选alert对黄框");
//        builder.setMessage("这是单选对话框。");
        final String[] items = new String[]{"java", "C++", "js"};
        builder.setSingleChoiceItems(items, 1, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String item = items[which];
                Toast.makeText(getApplicationContext(), item, Toast.LENGTH_SHORT).show();
                dialog.dismiss();
            }
        });


        builder.show();
    }

    public void multiply(View view) {

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("单选alert对黄框");
//        builder.setMessage("这是单选对话框。");
        final String[] items = new String[]{"java", "C++", "js"};
        builder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                Toast.makeText(getApplicationContext(), which + " " + isChecked, Toast.LENGTH_SHORT).show();
            }
        });


        builder.show();
    }

    //进度条对话框
    public void progress(View view) {
        final ProgressDialog progressDialog = new ProgressDialog(this);
        progressDialog.setTitle("正在拼命加载……");
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.show();

        new Thread() {
            @Override
            public void run() {
                progressDialog.setMax(100);
                for (int i = 0; i <= 100; i++) {
                    progressDialog.setProgress(i);
                    SystemClock.sleep(50);
                }
                progressDialog.dismiss();
            }
        }.start();
    }