Android自定义弹窗提醒控件使用详解

Android中原生的Dialog弹窗提醒控件样式单一，有时候并不能满足我们的项目需求，而且一个工程里面有时候会在多处都用到弹窗提醒的功能，代码会出现大量的冗余，工作之余，就自己实现了这么一个弹窗提醒控件。自定义控件继承自我们的Dialog，样式自定义，弹窗中的文字可通过数组参数初始化，Item个数实现了动态添加，和数组长度一致。对话框底端可展示一个Item（如：确定）或两个Item（如：确定   取消），通过参数设置。废话不多说，直接上代码：

1、自定义对话框的背景样式，在res/values/styles.xml文件中定义如下样式：

  true
  true
  true
  @color/transparent
  true

2、自定义控件，继承Dialog：

package com.example.mymenudialog.UI;
 
import java.util.ArrayList;
 
import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.TextView;
 
import com.example.mymenudialog.R;
 

public class MyMenuDialog extends Dialog {
 
 private static Context mContext;
 
 private int dialogWidth;
 
 private boolean isTwoItemsonLastLine = false;
 
 private boolean isSetOnClickListener2SecondLastItem = false;
 
 private boolean isSetOnClickListener2LastItem = false;
 
 private ArrayList mList = new ArrayList();
 
 private ArrayList mDividerList = new ArrayList();
 
 
 public MyMenuDialog(Context context, String[] names) {
 this(context, names, false);
 }
 
 
 public MyMenuDialog(Context context, String[] names, boolean isLastLine2Items) {
 super(context, R.style.alertdialog_theme);
 this.isTwoItemsonLastLine = isLastLine2Items;
 if (null == context || null == names || names.length < 1) {
  return;
 }
 mContext = context;
 Window w = getWindow();
 WindowManager wmManager = w.getWindowManager();
 DisplayMetrics outMetrics = new DisplayMetrics();
 wmManager.getDefaultDisplay().getMetrics(outMetrics);
 dialogWidth = outMetrics.widthPixels * 3 / 4;
 int padding = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 15, outMetrics);
 int height1dp = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, outMetrics);
 outMetrics = null;
 TextView contentView, dividerView;
 // 定义根部局控件
 LinearLayout mView = new LinearLayout(context);
 mView.setBackgroundResource(R.drawable.rectangle_shape);
 mView.setOrientation(LinearLayout.VERTICAL);
 // 向根部局文件中添加子控件
 for (int i = 0; i < names.length; i++) {
  contentView = new TextView(mContext);
  dividerView = new TextView(mContext);
 
  contentView.setPadding(0, padding, 0, padding);
  contentView.setGravity(Gravity.CENTER);
  contentView.setText(names[i]);
  dividerView.setHeight(height1dp);
  dividerView.setWidth(dialogWidth);
  if (names.length == 1) {// 只包含1个Item时
  contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
  contentView.setTextColor(Color.rgb(52, 158, 57));
  contentView.setonClickListener(new defaultonClickListener());
  } else if (names.length == 2) {// 包含两个Item时
  if (!isLastLine2Items) {// 如果不是显示到同一行中
   if (i == 0) {
   contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
   contentView.setTextColor(Color.rgb(102, 102, 102));
   dividerView.setBackgroundColor(Color.rgb(198, 198, 196));
   } else {
   contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
   contentView.setTextColor(Color.rgb(43, 142, 240));
   contentView.setonClickListener(new defaultonClickListener());
   }
  } else {
   makeTextButton(context, padding, height1dp, mView, names[names.length - 2], names[names.length - 1]);
   break;
  }
  } else {
  if (i == 0) {
   contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 16f);
   contentView.setTextColor(Color.rgb(102, 102, 102));
   dividerView.setBackgroundColor(Color.rgb(52, 158, 57));
  } else if (i >= names.length - 2) {
   if (!isLastLine2Items) {
   if (i == names.length - 1) {
    contentView.setTextColor(Color.rgb(52, 158, 57));
    contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
    contentView.setonClickListener(new defaultonClickListener());
   } else {
    contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
    contentView.setTextColor(Color.rgb(43, 142, 240));
    dividerView.setBackgroundColor(Color.rgb(198, 198, 196));
   }
   } else {
   makeTextButton(context, padding, height1dp, mView, names[names.length - 2], names[names.length - 1]);
   break;
   }
  } else {
   contentView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
   contentView.setTextColor(Color.rgb(43, 142, 240));
   dividerView.setBackgroundColor(Color.rgb(198, 198, 196));
  }
  }
 
  mView.addView(contentView);
  mList.add(contentView);
  if (i != names.length - 1) {
  mView.addView(dividerView);
  mDividerList.add(dividerView);
  }
 }
 
 setContentView(mView);
 setCancelable(true);
 setCanceledonTouchOutside(true);
 WindowManager.LayoutParams lp = w.getAttributes();
 lp.width = dialogWidth;
 }
 
 
 private void makeTextButton(Context context, int padding, int height1dp, LinearLayout mView, String btn1Text, String btn2Text) {
 TextView btn_1, btn_spline, btn_2;
 LinearLayout btnContainer = new LinearLayout(context);
 LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
 params.gravity = Gravity.CENTER;
 mView.addView(btnContainer, params);
 btn_1 = new TextView(mContext);
 btn_1.setPadding(0, padding, 0, padding);
 btn_1.setText(btn1Text);
 btn_1.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
 btn_1.setTextColor(Color.rgb(52, 158, 57));
 btn_1.setGravity(Gravity.CENTER);
 LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT);
 params2.weight = 1;
 btnContainer.addView(btn_1, params2);
 btn_spline = new TextView(mContext);
 LinearLayout.LayoutParams params3 = new LinearLayout.LayoutParams(height1dp, LayoutParams.MATCH_PARENT);
 btn_spline.setBackgroundColor(Color.rgb(198, 198, 196));
 btnContainer.addView(btn_spline, params3);
 btn_2 = new TextView(mContext);
 btn_2.setPadding(0, padding, 0, padding);
 btn_2.setText(btn2Text);
 btn_2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18f);
 btn_2.setTextColor(Color.rgb(52, 158, 57));
 btn_2.setGravity(Gravity.CENTER);
 LinearLayout.LayoutParams params4 = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT);
 params4.weight = 1;
 params4.gravity = Gravity.CENTER;
 btnContainer.addView(btn_2, params4);
 mList.add(btn_1);
 mList.add(btn_2);
 mDividerList.add(btn_spline);
 
 btn_1.setonClickListener(new View.onClickListener() {
  @Override
  public void onClick(View v) {
  if (!isSetOnClickListener2SecondLastItem && isShowing()) {
   dismiss();
  }
  }
 });
 btn_2.setonClickListener(new defaultonClickListener());
 
 }
 
 
 public void setPadding2Items(int left, int top, int right, int bottom) {
 setPadding2Items(left, top, right, bottom, -1);
 }
 
 
 public void setPadding2Items(int left, int top, int right, int bottom, int flagUnit) {
 int tmpUnit = TypedValue.COMPLEX_UNIT_DIP;// 单位默认是dp
 switch (flagUnit) {
 case TypedValue.COMPLEX_UNIT_SP:
  tmpUnit = TypedValue.COMPLEX_UNIT_SP;
  break;
 case TypedValue.COMPLEX_UNIT_PX:
  tmpUnit = TypedValue.COMPLEX_UNIT_PX;
  break;
 }
 int tmpLeft = (int) TypedValue.applyDimension(tmpUnit, left, mContext.getResources().getDisplayMetrics());
 int tmpTop = (int) TypedValue.applyDimension(tmpUnit, top, mContext.getResources().getDisplayMetrics());
 int tmpRight = (int) TypedValue.applyDimension(tmpUnit, right, mContext.getResources().getDisplayMetrics());
 int tmpBottom = (int) TypedValue.applyDimension(tmpUnit, bottom, mContext.getResources().getDisplayMetrics());
 for (int i = 0; i < mList.size(); i++) {
  mList.get(i).setPadding(tmpLeft, tmpTop, tmpRight, tmpBottom);
 }
 }
 
 
 public void setDialogWidth(int width) {
 setDialogWidth(width, -1);
 }
 
 
 public void setDialogWidth(int width, int unit) {
 int tmpUnit = TypedValue.COMPLEX_UNIT_DIP;// 单位默认是dp
 switch (unit) {
 case TypedValue.COMPLEX_UNIT_SP:
  tmpUnit = TypedValue.COMPLEX_UNIT_SP;
  break;
 case TypedValue.COMPLEX_UNIT_PX:
  tmpUnit = TypedValue.COMPLEX_UNIT_PX;
  break;
 }
 width = (int) TypedValue.applyDimension(tmpUnit, width, mContext.getResources().getDisplayMetrics());
 WindowManager.LayoutParams lp = getWindow().getAttributes();
 if (width >= dialogWidth / 3 && width <= dialogWidth * 4 / 3) {// 限制对话框的宽度为屏幕宽度的1/4到屏幕宽度
  lp.width = width;
  if (width >= dialogWidth / 3 && width < dialogWidth / 2) {
  setTextSize(12);
  } else if (width >= dialogWidth / 2 && width < dialogWidth * 2 / 3) {
  setTextSize(14);
  } else if (width >= dialogWidth * 2 / 3 && width < dialogWidth * 5 / 6) {
  setTextSize(16);
  } else if (width >= dialogWidth * 7 / 6 && width <= dialogWidth * 4 / 3) {
  setTextSize(20);
  }
 }
 }
 
 private void setTextSize(int size) {
 for (int i = 0; i < mList.size(); i++) {
  mList.get(i).setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
 }
 if (mList.size() > 2) {
  mList.get(0).setTextSize(TypedValue.COMPLEX_UNIT_SP, size - 2);
 }
 }
 
 
 public void setTextColor2AllItems(int color) {
 for (int i = 0; i < mList.size(); i++) {
  mList.get(i).setTextColor(color);
 }
 }
 
 
 public void setTextColor2Item(int color, int itemIndex) {
 if (color < 0 || itemIndex < 1 || itemIndex > mList.size()) {
  return;
 }
 mList.get(itemIndex - 1).setTextColor(color);
 }
 
 
 public void setTextColor2Items(int[] color) {
 if (null == color || color.length == 0) {
  return;
 }
 for (int i = 0; i < color.length && i < mList.size(); i++) {
  if (color[i] != -1) {
  mList.get(i).setTextColor(color[i]);
  }
 }
 }
 
 
 public void setColor2DividerLine(int color) {
 for (int i = 0; i < mDividerList.size(); i++) {
  mDividerList.get(i).setBackgroundColor(color);
 }
 }
 
 
 public void setColor2DividerLine(int color, int dividerLineIndex) {
 if (color < 0 || dividerLineIndex < 1 || dividerLineIndex > mDividerList.size()) {
  return;
 }
 mDividerList.get(dividerLineIndex - 1).setBackgroundColor(color);
 }
 
 
 public void setColor2DividerLine(int[] color) {
 if (null == color || color.length == 0) {
  return;
 }
 for (int i = 0; i < color.length && i < mDividerList.size(); i++) {
  if (color[i] != -1) {
  mDividerList.get(i).setBackgroundColor(color[i]);
  }
 }
 }
 
 
 public void setOnClickListener2Items(View.OnClickListener[] listeners) {
 if (listeners == null || listeners.length == 0) {
  return;
 }
 for (int i = 0; i < listeners.length && i < mList.size(); i++) {
  if (listeners[i] != null) {
  mList.get(i).setonClickListener(listeners[i]);
  }
 }
 
 if (listeners.length < mList.size() || listeners[listeners.length - 1] == null) {
  isSetOnClickListener2LastItem = false;
  if (isTwoItemsonLastLine && (listeners.length < mList.size() - 1 || (listeners.length > 1 && listeners[listeners.length - 2] == null))) {
  isSetOnClickListener2SecondLastItem = true;
  }
 } else {
  isSetOnClickListener2LastItem = true;
 }
 
 }
 
 
 public void setOnClickListener2LastItem(View.onClickListener listener) {
 if (listener == null) {
  return;
 }
 if (null != mList && mList.size() > 0) {
  mList.get(mList.size() - 1).setonClickListener(listener);
  isSetOnClickListener2LastItem = true;
 }
 }
 
 
 public void setOnClickListener2SecondLastItem(View.onClickListener listener) {
 if (listener == null) {
  return;
 }
 if (null != mList && mList.size() > 1) {
  mList.get(mList.size() - 2).setonClickListener(listener);
  isSetOnClickListener2SecondLastItem = true;
 }
 }
 
 
 public void setOnClickListener2Item(View.onClickListener listener, int itemIndex) {
 if (listener == null || itemIndex < 1 || itemIndex > mList.size()) {
  return;
 }
 if (null != mList) {
  mList.get(itemIndex - 1).setonClickListener(listener);
  if (itemIndex == mList.size()) {
  isSetOnClickListener2LastItem = true;
  } else if (itemIndex == mList.size() - 1) {
  isSetOnClickListener2SecondLastItem = true;
  }
 }
 }
 
 
 public void setOnClickListener2LastTwoItems(final OnClickListener2LastTwoItem listener) {
 if (listener == null) {
  return;
 }
 if (null != mList && mList.size() >= 2) {
  isSetOnClickListener2LastItem = true;
  isSetOnClickListener2SecondLastItem = true;
  mList.get(mList.size() - 1).setonClickListener(new View.onClickListener() {
  @Override
  public void onClick(View v) {
   listener.onClickListener2LastItem();
  }
  });
  mList.get(mList.size() - 2).setonClickListener(new View.onClickListener() {
  @Override
  public void onClick(View v) {
   listener.onClickListener2SecondLastItem();
  }
  });
 }
 }
 
 
 public interface OnClickListener2LastTwoItem {
 
 void onClickListener2LastItem();
 
 
 void onClickListener2SecondLastItem();
 }
 
 
 private class defaultonClickListener implements View.onClickListener {
 @Override
 public void onClick(View v) {
  if (!isSetOnClickListener2LastItem) {
  if (isShowing()) {
   dismiss();
  }
  }
 }
 }
 
}

3、在Activity中使用自定义对话框：

package com.example.mymenudialog;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
 
import com.example.mymenudialog.UI.MyMenuDialog;
import com.example.mymenudialog.UI.MyMenuDialog.OnClickListener2LastTwoItem;
 
public class MainActivity extends Activity {
 
 private TextView tv_msg;
 private MyMenuDialog dialog;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 tv_msg = (TextView) findViewById(R.id.tv_msg);
 
 String[] names = { "温馨提示", "正在建设中", "确定", "取消" };
 dialog = new MyMenuDialog(this, names, true);
 // dialog.setPadding2Items(0,10, 0, 10);//设置Item中文本的填充
 // dialog.setDialogWidth(100);//设置对话框的宽度
 dialog.setOnClickListener2LastTwoItems(new OnClickListener2LastTwoItem() {
  @Override
  public void onClickListener2SecondLastItem() {
  tv_msg.setText("点击了确定");
  dialog.dismiss();
  }
 
  @Override
  public void onClickListener2LastItem() {
  tv_msg.setText("点击了取消");
  dialog.dismiss();
  }
 });
 
 findViewById(R.id.btn_click).setonClickListener(new onClickListener() {
  @Override
  public void onClick(View v) {
  dialog.show();
  }
 });
 }
}

下面看效果图：

点击可下载项目源码

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