前言

我们再用支付宝支付的时候,会从底部弹上来一个对话框,让我们选择支付方式等等,今天我们就来慢慢实现这个功能

效果图

实现

主界面很简单,就是一个按钮,点击后跳到支付详情的Fragment中

package com.example.hfs.alipayuidemo;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {

private Button mButton;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initView();

}

private void initView() {

mButton= (Button) this.findViewById(R.id.btn_pay);

mButton.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

PayDetailFragment payDetailFragment=new PayDetailFragment();

payDetailFragment.show(getSupportFragmentManager(),"payDetailFragment");

}

});

}

}

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接着是支付详情的Fragment代码

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package com.example.hfs.alipayuidemo;

import android.app.Dialog;

import android.os.Bundle;

import android.support.annotation.NonNull;

import android.support.v4.app.DialogFragment;

import android.view.Gravity;

import android.view.View;

import android.view.Window;

import android.view.WindowManager;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.Button;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.RelativeLayout;

/**

* 底部弹窗Fragment

*/

public class PayDetailFragment extends DialogFragment {

private RelativeLayout rePayWay, rePayDetail, reBalance;

private LinearLayout LinPayWay,linPass;

private ListView lv;

private Button btnPay;

private EditText gridPasswordView;

@NonNull

@Override

public Dialog onCreateDialog(Bundle savedInstanceState) {

Dialog dialog = new Dialog(getActivity(), R.style.BottomDialog);

dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

dialog.setContentView(R.layout.fragment_pay_detail);

dialog.setCanceledOnTouchOutside(true);

final Window window = dialog.getWindow();

window.setWindowAnimations(R.style.AnimBottom);

final WindowManager.LayoutParams lp = window.getAttributes();

lp.gravity = Gravity.BOTTOM;

lp.width = WindowManager.LayoutParams.MATCH_PARENT;

lp.height = getActivity().getWindowManager().getDefaultDisplay().getHeight() * 3 / 5;

window.setAttributes(lp);

rePayWay = (RelativeLayout) dialog.findViewById(R.id.re_pay_way);

rePayDetail = (RelativeLayout) dialog.findViewById(R.id.re_pay_detail);

LinPayWay = (LinearLayout) dialog.findViewById(R.id.lin_pay_way);

lv = (ListView) dialog.findViewById(R.id.lv_bank);

reBalance = (RelativeLayout) dialog.findViewById(R.id.re_balance);

btnPay = (Button) dialog.findViewById(R.id.btn_confirm_pay);

gridPasswordView = (EditText) dialog.findViewById(R.id.pass_view);

linPass = (LinearLayout)dialog.findViewById(R.id.lin_pass);

rePayWay.setOnClickListener(listener);

reBalance.setOnClickListener(listener);

btnPay.setOnClickListener(listener);

return dialog;

}

View.OnClickListener listener = new View.OnClickListener() {

@Override

public void onClick(View view) {

Animation slide_left_to_left = AnimationUtils.loadAnimation(getActivity(), R.anim.slide_left_to_left);

Animation slide_right_to_left = AnimationUtils.loadAnimation(getActivity(), R.anim.slide_right_to_left);

Animation slide_left_to_right = AnimationUtils.loadAnimation(getActivity(), R.anim.slide_left_to_right);

Animation slide_left_to_left_in = AnimationUtils.loadAnimation(getActivity(), R.anim.slide_left_to_left_in);

switch (view.getId()) {

case R.id.re_pay_way:

rePayDetail.startAnimation(slide_left_to_left);

rePayDetail.setVisibility(View.GONE);

LinPayWay.startAnimation(slide_right_to_left);

LinPayWay.setVisibility(View.VISIBLE);

break;

case R.id.re_balance:

rePayDetail.startAnimation(slide_left_to_left_in);

rePayDetail.setVisibility(View.VISIBLE);

LinPayWay.startAnimation(slide_left_to_right);

LinPayWay.setVisibility(View.GONE);

break;

case R.id.btn_confirm_pay:

rePayDetail.startAnimation(slide_left_to_left);

rePayDetail.setVisibility(View.GONE);

linPass.startAnimation(slide_right_to_left);

linPass.setVisibility(View.VISIBLE);

break;

default:

break;

}

}

};

}

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还有一个ScrollView嵌套ListView的问题,主要是重写ListView的计算高度

package com.example.hfs.alipayuidemo;

import android.content.Context;

import android.util.AttributeSet;

import android.widget.ListView;

/**

* ScrollView中嵌套ListView，重写ListView计算高度

*/

public class ScrollviewListView extends ListView {

public ScrollviewListView(Context context) {

super(context);

}

public ScrollviewListView(Context context, AttributeSet attrs) {

super(context, attrs);

}

public ScrollviewListView(Context context, AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

}

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,

MeasureSpec.AT_MOST);

super.onMeasure(widthMeasureSpec, expandSpec);

}

}

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好了,其实还是挺好理解的,附上GitHub项目地址:

github.com/Greathfs/Al…