对话框崩溃应用 [英] Dialog crashing the app

问题描述

好吧只知道，我复制粘贴从Android网站code，所以我不觉得有什么不对。

问题是，当我preSS的按钮，它crashes.And它从对话框code崩溃，因为我没有任何东西在那里。

在code是：

MainDialog.xml：

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
          ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
          机器人：ID =@ + ID / layout_root
          机器人：方向=横向
          机器人：layout_width =FILL_PARENT
          机器人：layout_height =FILL_PARENT
          机器人：填充=10dp
          ＆GT;
          ＆LT; ImageView的
           机器人：ID =@ + ID /图像
           机器人：layout_width =WRAP_CONTENT
           机器人：layout_height =FILL_PARENT
           机器人：layout_marginRight =10dp
           /＆GT;
          ＆LT; TextView的机器人：ID =@ + ID /文
          机器人：layout_width =WRAP_CONTENT
          机器人：layout_height =FILL_PARENT
          机器人：文字颜色=＃FFF
          /＆GT;          ＆LT; / LinearLayout中＆GT;
 

和上Button1的情况是pressed：

 上下文mContext = getApplicationContext（）;
        对话的对话=新的对话框（mContext）;        dialog.setContentView（R.layout.maindialog）;
        dialog.setTitle（自定义对话框）;        TextView的文本=（TextView的）dialog.findViewById（R.id.text）;
        text.setText（你好，这是一个自定义对话框！）;
        ImageView的图像=（ImageView的）dialog.findViewById（R.id.image）;
        image.setImageResource（R.drawable.icon）;
        dialog.show（）;
 

解决方案

您使用活动背景和呼叫添加到 dialog.show（ ）; ：

 上下文mContext =这一点; //假设你从一个活动内调用此
    对话的对话=新的对话框（mContext）;    dialog.setContentView（R.layout.maindialog）;
    dialog.setTitle（自定义对话框）;    TextView的文本=（TextView的）dialog.findViewById（R.id.text）;
    text.setText（你好，这是一个自定义对话框！）;
    ImageView的图像=（ImageView的）dialog.findViewById（R.id.image）;
    image.setImageResource（R.drawable.icon）;
    dialog.show（）;
 

Ok just to know,I copy-pasted the code from the android website,so I don't think there is something wrong.

The problem is that when I press the button it crashes.And it crashes from the dialog code,because I don't have anything else there.

The code is:

MainDialog.xml:

          <?xml version="1.0" encoding="utf-8"?>
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@+id/layout_root"
          android:orientation="horizontal"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
          android:padding="10dp"
          >
          <ImageView 
           android:id="@+id/image"
           android:layout_width="wrap_content"
           android:layout_height="fill_parent"
           android:layout_marginRight="10dp"
           />
          <TextView android:id="@+id/text"
          android:layout_width="wrap_content"
          android:layout_height="fill_parent"
          android:textColor="#FFF"
          />

          </LinearLayout>

And on the case that button1 is pressed:

                    Context mContext = getApplicationContext();
        Dialog dialog = new Dialog(mContext);

        dialog.setContentView(R.layout.maindialog);
        dialog.setTitle("Custom Dialog");

        TextView text = (TextView) dialog.findViewById(R.id.text);
        text.setText("Hello, this is a custom dialog!");
        ImageView image = (ImageView) dialog.findViewById(R.id.image);
        image.setImageResource(R.drawable.icon);    
        dialog.show();  

解决方案

You use the Activity context and add a call to dialog.show();:

    Context mContext = this; //Assumes you are calling this from within an activity
    Dialog dialog = new Dialog(mContext);

    dialog.setContentView(R.layout.maindialog);
    dialog.setTitle("Custom Dialog");

    TextView text = (TextView) dialog.findViewById(R.id.text);
    text.setText("Hello, this is a custom dialog!");
    ImageView image = (ImageView) dialog.findViewById(R.id.image);
    image.setImageResource(R.drawable.icon);    
    dialog.show();  

这篇关于对话框崩溃应用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！