android 创建自定义对话框

        final AlertDialog dialog = new AlertDialog.Builder(context).create();        dialog.show();        Window window = dialog.getWindow();        window.setWindowAnimations(R.style.dialogWindowAnim);//设置对话框显示和消失动画        window.setLayout((int) context.getResources().getDimension(100dp,100dp));//设置对话框的大小        window.setBackgroundDrawableResource(R.drawable.tanchuangbeijing);//设置对话框的背景        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        View view = inflater.inflate(R.layout.dialog_prompt, null);        TextView tvDesc = (TextView) view.findViewById(R.id.tv_desc);        if (!TextUtils.isEmpty(text)) {            tvDesc.setText(text);        }        Button btnPositive = (Button) view.findViewById(R.id.btn_positive);        Button btnNegative = (Button) view.findViewById(R.id.btn_negative);        btnPositive.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (positiveListener != null) {                    positiveListener.onClick(v);                    dialog.dismiss();                }            }        });        btnNegative.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                dialog.dismiss();            }        });

//默认显示在窗口的正中间，但是可以通过x改变水平位置，y改变垂直位置，x为正向右偏移，反之向左偏移，y为正向下偏移，反之向上；

        WindowManager.LayoutParams attributes = window.getAttributes();

        attributes.x = x;        attributes.y = y;        window.setAttributes(attributes);        window.setContentView(view);

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