<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" android:layout_width="match_parent"
 xmlns:autofit="http://schemas.android.com/apk/res-auto"
 android:layout_height="wrap_content"
 android:background="@drawable/dialog_corner_bg"
 android:paddingBottom="@dimen/dp_16"
 >
 <ImageView
  android:id="@+id/dialog_img"
  android:layout_width="30dp"
  android:layout_height="30dp"
  android:src="@mipmap/icon1"
  android:layout_marginTop="@dimen/dp_12"
  android:layout_centerHorizontal="true"
  />


 <me.grantland.widget.AutofitTextView
  android:id="@+id/dialog_txt_content"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:singleLine="true"
  android:maxLines="1"
  android:textSize="14sp"
  autofit:minTextSize="10sp"
  android:text="下载失败，请重试"
  android:gravity="center"
  android:layout_margin="@dimen/dp_6"
  android:layout_centerInParent="true"
  />


 <TextView
  android:id="@+id/dialog_btn_comfirm"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="确定"
  android:gravity="center"
  android:background="@drawable/bg_btn_blue_big"
  android:textColor="@color/white"
  android:paddingTop="@dimen/dp_6"
  android:paddingBottom="@dimen/dp_6"
  android:paddingLeft="@dimen/dp_30"
  android:paddingRight="@dimen/dp_30"
  android:layout_centerHorizontal="true"
  android:layout_alignParentBottom="true"
  />

</RelativeLayout>

 android:background="@drawable/dialog_corner_bg"

<?xml version="1.0" encoding="utf-8"?>
<!-- 用于设置信息对话框的圆角 -->
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <corners android:radius="@dimen/dp_12"></corners>
 <solid android:color="@color/white"></solid>
</shape>

public static void showEditDialog(Context context , String message) {}

　 View view = LayoutInflater.from(context).inflate(R.layout.dialog_message, null);
  TextView confirm; //确定按钮
  final TextView content; //内容
  confirm = (TextView) view.findViewById(R.id.dialog_btn_comfirm); 
  content = (TextView) view.findViewById(R.id.dialog_txt_content);
  content.setText(message);
  final Dialog dialog = new Dialog(context);
  dialog.setContentView(view);
  dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent); //设置对话框背景透明 ，对于AlertDialog 就不管用了

　  confirm.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    dialog.dismiss();
   }
  });

dialog.show();

　　 DisplayMetrics dm = context.getResources().getDisplayMetrics();
  int displayWidth = dm.widthPixels;
  int displayHeight = dm.heightPixels;
  android.view.WindowManager.LayoutParams p = dialog.getWindow().getAttributes(); //获取对话框当前的参数值
  p.width = (int) (displayWidth * 0.55); //宽度设置为屏幕的0.55
  p.height = (int) (displayHeight * 0.28); //高度设置为屏幕的0.28
  dialog.setCanceledOnTouchOutside(false);// 设置点击屏幕Dialog不消失
  dialog.getWindow().setAttributes(p);  //设置生效

AlertDialog dialog = builder.create(); 
dialog.setView(view); 
dialog.show(); 
WindowManager m = getWindowManager(); //这里会发现不在activity中的话 就没法调用getWindowManager()方法，所以此方法不能使用
Display d = m.getDefaultDisplay(); //为获取屏幕宽、高  
android.view.WindowManager.LayoutParams p = dialog.getWindow().getAttributes(); //获取对话框当前的参数值  
p.height = (int) (d.getHeight() * 0.3); //高度设置为屏幕的0.3 
p.width = (int) (d.getWidth() * 0.5); //宽度设置为屏幕的0.5 
dialog.getWindow().setAttributes(p);  //设置生效 

 /*----------------------------dialog---------------------------------*/
 public static void showEditDialog(Context context , String message) {
  View view = LayoutInflater.from(context).inflate(R.layout.dialog_message, null);
  TextView confirm; //确定按钮
  final TextView content; //内容
  confirm = (TextView) view.findViewById(R.id.dialog_btn_comfirm);
  content = (TextView) view.findViewById(R.id.dialog_txt_content);
  content.setText(message);
  final Dialog dialog = new Dialog(context);
  dialog.setContentView(view);
  dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);

  confirm.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    dialog.dismiss();
   }
  });
  dialog.show();
  DisplayMetrics dm = context.getResources().getDisplayMetrics();
  int displayWidth = dm.widthPixels;
  int displayHeight = dm.heightPixels;
  android.view.WindowManager.LayoutParams p = dialog.getWindow().getAttributes(); //获取对话框当前的参数值
  p.width = (int) (displayWidth * 0.55); //宽度设置为屏幕的0.5
  p.height = (int) (displayHeight * 0.28); //宽度设置为屏幕的0.5
  dialog.setCanceledOnTouchOutside(false);// 设置点击屏幕Dialog不消失
  dialog.getWindow().setAttributes(p);  //设置生效

 }