安卓—自定义 AlertDialog 的样式

自定义修改安卓弹出框的样式

效果图:

 

 

1.在style.xml下添加

<!-- 自定义弹出样式 -->      <style name="MyDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">          <!--是否浮在窗口之上-->          <!--<item name="android:windowIsFloating">true</item>-->          <!--半透明-->          <!--<item name="android:windowIsTranslucent">true</item>-->          <!--是否显示title-->          <item name="android:windowNoTitle">true</item>          <!--dialog之外没有焦点的区域是否罩上黑色半透明-->          <item name="android:background">@color/white</item>          <item name="android:textColor">@color/gray</item>          <item name="android:textSize">@dimen/f24</item>          <!-- 这里是修改顶部标题背景颜色,具体颜色自己定,可以是图片 -->          <item name="android:topDark">@color/blue_alert</item>          <!-- 这里是修改内容区域背景颜色 -->          <item name="android:layout_gravity">center</item>          <item name="buttonBarButtonStyle">@color/white</item>      </style>  

 2.在主体配置里引入自定义的AlertDialog主题

3.java代码写法

/**       * 默认的弹出窗口       * @param view       */      public void alertDialog(View view) {          AlertDialog.Builder builder = new AlertDialog.Builder(this);          builder.setTitle("弹出窗");          builder.setMessage("提示信息!");          builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {              @Override              public void onClick(DialogInterface dialogInterface, int i) {                  System.out.println("确认执行函数");              }          }).setNegativeButton("取消", null);          builder.show();      }        /**       * 自定义样式的弹出窗       * @param view       */      public void alertDialog2(View view) {          final AlertDialog.Builder builder = new AlertDialog.Builder(this);          // 自定义 title样式          TextView title = new TextView(this);          title.setText("自定义弹出窗");          title.setTextSize(24);          title.setGravity(Gravity.CENTER);          title.setPadding(0,20,0,20);          builder.setCustomTitle(title);          // 中间的信息以一个view的形式设置进去          TextView msg = new TextView(this);          msg.setText("自定义弹出提示信息");          msg.setTextSize(24);          msg.setGravity(Gravity.CENTER);          msg.setPadding(20, 40, 20, 40);          builder.setView(msg);            builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {              @Override              public void onClick(DialogInterface dialogInterface, int i) {                  System.out.println("确认执行函数");              }          }).setNegativeButton("取消", null);          // 调用 show()方法后得到 dialog对象          AlertDialog dialog = builder.show();          final Button positiveButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);          final Button negativeButton=dialog.getButton(AlertDialog.BUTTON_NEGATIVE);          LinearLayout.LayoutParams positiveParams =(LinearLayout.LayoutParams)positiveButton.getLayoutParams();          positiveParams.gravity = Gravity.CENTER;          positiveParams.setMargins(10,10,10,10);          positiveParams.width = 0;          // 安卓下面有三个位置的按钮,默认权重为 1,设置成 500或更大才能让两个按钮看起来均分          positiveParams.weight = 500;          LinearLayout.LayoutParams negativeParams =(LinearLayout.LayoutParams)negativeButton.getLayoutParams();          negativeParams.gravity = Gravity.CENTER;          negativeParams.setMargins(10,10,10,10);          negativeParams.width = 0;          negativeParams.weight = 500;          positiveButton.setLayoutParams(positiveParams);          negativeButton.setLayoutParams(negativeParams);          positiveButton.setBackgroundColor(Color.parseColor("#FF733E"));          positiveButton.setTextColor(Color.parseColor("#FFFFFF"));          negativeButton.setBackgroundColor(Color.parseColor("#DDDDDD"));      }