一个Class搞定提示框，懒人必备
前言
做新项目时，要用到以前的代码，有许多关联的资源文件要拷贝，但是又属于比较懒的那种人。就将布局文件用代码生成，省得拷贝。
具体代码
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package com.alan.dialogdemo;
import android.annotation.SuppressLint;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
/**
* @author Alan
* @date 创建时间：2016年7月25日 下午2:48:05
* @version 0.5
* @Description 通用提示框
* @return
* */
@SuppressLint("NewApi")
public class CommonDialog extends Dialog{
public CommonDialog(Context context){
super(context);
}
public interface OnCommonDialogClickListener{
public void confirm();
public void cancel();
}
public static class Builder{
private Context mContext;
/** 标题*/
private TextView tvTitle;
/** 提示内容*/
private TextView tvContent;
/** 确定按钮*/
private Button btnConfire;
/** 取消按钮*/
private Button btnCancel;
/** 提示标题图片资源*/
private String mTitleStr;
/** 提示内容文本*/
private String mContentStr = "";
/** 确定按钮文本*/
private String mConfireStr = "";
/** 取消按钮文本*/
private String mCancelStr = "";
/** 点击外面是否取消,默认不能取消*/
private boolean mCancelableFlag = false;
/** 操作回调*/
private static OnCommonDialogClickListener mListener;
public Builder(Context context){
this.mContext = context;
this.mConfireStr = "确定";
this.mCancelStr = "取消";
}
public Builder(Context context,String title,String content,OnCommonDialogClickListener listener){
}
public CommonDialog.Builder setOnCommonDialogClick(OnCommonDialogClickListener listener){
mListener = listener;
return this;
}
public CommonDialog.Builder setTitle(String title) {
mTitleStr = title;
return this;
}
public CommonDialog.Builder setContent(String content) {
mContentStr = content;
return this;
}
public CommonDialog.Builder setCancelable(boolean flag){
mCancelableFlag = flag;
return this;
}
public CommonDialog create(){
final CommonDialog dialog = new CommonDialog(mContext);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
dialog.setCancelable(mCancelableFlag);
// 根布局
LinearLayout mRootView = new LinearLayout(mContext);
mRootView.setOrientation(LinearLayout.VERTICAL);
mRootView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT));
mRootView.setBackgroundColor(Color.WHITE);
// 标题布局
LinearLayout mTitleLayout = new LinearLayout(mContext);
// 标题布局参数
LinearLayout.LayoutParams mTitleLayoutParams = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT,dipTopx(mContext, 50));
mTitleLayoutParams.gravity = Gravity.CENTER;
mTitleLayout.setLayoutParams(mTitleLayoutParams);
mTitleLayout.setBackgroundColor(Color.DKGRAY);
mTitleLayout.setGravity(Gravity.CENTER);
// 标题文本
TextView mTitle = new TextView(mContext);
LinearLayout.LayoutParams mTitleParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
mTitleParams.gravity = Gravity.CENTER;
mTitle.setLayoutParams(mTitleParams);
mTitle.setPadding(dipTopx(mContext, 10), dipTopx(mContext, 10), dipTopx(mContext, 10), dipTopx(mContext, 10));
if(TextUtils.isEmpty(mTitleStr)){
throw new RuntimeException("请设置标题 setTitle");
}
mTitle.setText(mTitleStr);
mTitle.setTextSize(25);
mTitle.setGravity(Gravity.CENTER);
mTitle.setTextColor(Color.WHITE);
mTitleLayout.addView(mTitle);
mRootView.addView(mTitleLayout);
// 提示内容
TextView mContent = new TextView(mContext);
LinearLayout.LayoutParams mContentParams = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
mContentParams.setMargins(0, dipTopx(mContext, 40), 0, dipTopx(mContext, 40));
mContentParams.gravity = Gravity.CENTER;
mContent.setLayoutParams(mContentParams);
mContent.setGravity(Gravity.CENTER);
if(TextUtils.isEmpty(mContentStr)){
throw new RuntimeException("请设置提示内容 setContent");
}
mContent.setText(mContentStr);
mContent.setTextColor(Color.BLACK);
mContent.setTextSize(18);
mRootView.addView(mContent);
// 按钮布局
LinearLayout mBtnLayout = new LinearLayout(mContext);
mBtnLayout.setGravity(Gravity.CENTER_HORIZONTAL);
LinearLayout.LayoutParams mBtnLayoutParams = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
mBtnLayoutParams.setMargins(0, 0, 0, dipTopx(mContext, 10));
mBtnLayout.setLayoutParams(mBtnLayoutParams);
// 取消按钮
Button mCancelBtn = new Button(mContext);
LinearLayout.LayoutParams mCancelBtnParams = new LinearLayout.LayoutParams(dipTopx(mContext, 150), LayoutParams.WRAP_CONTENT);
mCancelBtnParams.leftMargin = (dipTopx(mContext, 10));
mCancelBtn.setLayoutParams(mCancelBtnParams);
mCancelBtn.setText(mCancelStr);
mCancelBtn.setPadding(dipTopx(mContext, 10), dipTopx(mContext, 5), dipTopx(mContext, 10), dipTopx(mContext, 5));
// 取消按钮点击事件
mCancelBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(mListener != null){
mListener.cancel();
dialog.dismiss();
}
}
});
// 确定按钮
Button mConfireBtn = new Button(mContext);
LinearLayout.LayoutParams mConfireBtnParams = new LinearLayout.LayoutParams(dipTopx(mContext, 150), LayoutParams.WRAP_CONTENT);
mConfireBtnParams.rightMargin = (dipTopx(mContext, 10));
mConfireBtn.setLayoutParams(mConfireBtnParams);
mConfireBtn.setText(mConfireStr);
mConfireBtn.setPadding(dipTopx(mContext, 10), dipTopx(mContext, 5), dipTopx(mContext, 10), dipTopx(mContext, 5));
// 确定按钮点击事件
mConfireBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(mListener != null){
mListener.confirm();
dialog.dismiss();
}
}
});
mBtnLayout.addView(mCancelBtn);
mBtnLayout.addView(mConfireBtn);
mRootView.addView(mBtnLayout);
dialog.setContentView(mRootView);
return dialog;
}
/**
* 根据手机的分辨率从 dp 的单位 转成为 px(像素)
*/
public int dipTopx(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* 根据手机的分辨率从 px(像素) 的单位 转成为 dp
*/
public int pxTodip(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
}
}
使用代码
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new CommonDialog.Builder(MainActivity.this)
.setTitle("支付未完成")
.setContent("你想要取消这次支付吗?")
.setOnCommonDialogClick(new OnCommonDialogClickListener() {
@Override
public void confirm() {
Toast.makeText(MainActivity.this, "你点击了确定", Toast.LENGTH_SHORT).show();
}
@Override
public void cancel() {
Toast.makeText(MainActivity.this, "你点击了取消", Toast.LENGTH_SHORT).show();
}
})
.create()
.show();
最后
根据自己项目的需求更改样式，自行扩展
本文由作者按照
CC BY 4.0
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