android Dialog弹出框十分常见，有这系统提供的，也有自定义的。

系统提供的：

 private void showDeleteDialog() {
         final AlertDialog.Builder builder = new AlertDialog.Builder(this)
                .setTitle("警告")
                .setPositiveButton("删除", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        //do  delete thing
                    }
                })
                .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        
                    }
                });
         builder.create().show();

    }

自定义：
第一种方式：

 private void deleteDialog() {
        AlertDialog.Builder deleter = new AlertDialog.Builder(this);
        View delete_view = View.inflate(this,R.layout.delete_layout,null);
        deleter.setView(delete_view);
        final AlertDialog dialog = deleter.create();
        ImageButton ibt_yes = (ImageButton) delete_view.findViewById(R.id.ibt_yes);
        ImageButton ibt_no = (ImageButton) delete_view.findViewById(R.id.ibt_no);
        ibt_yes.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(this,"花钱啦",Toast.LENGTH_SHORT).show();
                dialog.dismiss();
            }
        });
        ibt_no.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });

        dialog.show();
        WindowManager.LayoutParams params = dialog.getWindow().getAttributes();
        params.width = 1000;
        params.height = 700 ;
        dialog.getWindow().setAttributes(params);
    }

第二种：
新建一个xxxDialog.class

public class WantShopDialog extends Dialog {
    private TextView tv_canclewantshop;
    private Activity context;


    public WantShopDialog(Activity context) {
        super(context);
        this.context = context;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_wantshop);

        Window dialogWindow = this.getWindow();
        WindowManager m = context.getWindowManager();
        Display d = m.getDefaultDisplay(); // 获取屏幕宽、高用
        WindowManager.LayoutParams p = dialogWindow.getAttributes(); // 获取对话框当前的参数值
        // p.height = (int) (d.getHeight() * 0.6); // 高度设置为屏幕的0.6
        p.width = (int) (d.getWidth() * 0.8); // 宽度设置为屏幕的0.8
        dialogWindow.setAttributes(p);
        this.setCancelable(true);
        tv_canclewantshop = (TextView) findViewById(R.id.tv_canclewantshop);
        tv_canclewantshop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
            }
        });
    }


}

调用时：

 WantShopDialog dialog = new WantShopDialog(getActivity());
                        dialog.show();