檢查互聯網狀態後更改ImageView圖像

我想在檢查互聯網的狀態後更改imageview圖像。基本的，我想檢查互聯網是否工作，如果它我想要顯示某個圖像。檢查互聯網狀態後更改ImageView圖像

這裏我的代碼：

public void onClick(View v) { 

    // get Internet status 
    isInternetPresent = cd.isConnectingToInternet(); 

    // check for Internet status 
    if (isInternetPresent) { 
     // Internet Connection is Present 
     // make HTTP requests 
     showAlertDialog(AndroidDetectInternetConnectionActivity.this, "Internet Connection", "You have internet connection", true); 
    } else { 
     // Internet connection is not present 
     // Ask user to connect to Internet 
     showAlertDialog(AndroidDetectInternetConnectionActivity.this, "No Internet Connection", "You don't have internet connection.", false); 
    } 
}

來源

2012-10-31 MoschDev

我是假設你有在Android的檢查互聯網的知識。

在OnCreate中使用

這樣的：

imagev = (ImageView)findviewbyid(R.id.imageview);

onbutton點擊：

public void onClick(View v) { 

       // get Internet status 
       isInternetPresent = cd.isConnectingToInternet(); 

       // check for Internet status 
       if (isInternetPresent) { 
        // Internet Connection is Present 
        // make HTTP requests 
        showAlertDialog(AndroidDetectInternetConnectionActivity.this, "Internet Connection", 
          "You have internet connection", true); 
           imagev.setImageDrawable(getResources().getDrawable(R.drawable.withinternet)); 

       } else { 
        // Internet connection is not present 
        // Ask user to connect to Internet 
        showAlertDialog(AndroidDetectInternetConnectionActivity.this, "No Internet Connection", 
          "You don't have internet connection.", false); 
       imagev.setImageDrawable(getResources().getDrawable(R.drawable.nointernet)); 
       }

來源

2012-10-31 07:09:58

好的，非常感謝。這真的有助於 – MoschDev

當放在創建代碼它給我一個錯誤的任務 – MoschDev

你得到什麼類型的錯誤？強迫關閉？還是其他什麼？ –

以下方法用於檢查網絡是否可用

public static boolean isOnline(Activity context) { 
    ConnectivityManager cm = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); 
    NetworkInfo netInfo = cm.getActiveNetworkInfo(); 
    if (netInfo != null && netInfo.isConnected()) { 
     return true; 
    } 
    return false; 
}

在清單文件中設置下面的權限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

然後檢查類似下面

if(isOnline()) 
    img.setImageResource(); 
else 
    img.setImageResource();

來源

2012-10-31 07:10:04 koti

試試這個改變的ImageView圖像。

your_ImageView.setBackgroundResource(R.drawable.your_image_name);

來源

2012-10-31 07:18:04 Akshay

檢查互聯網狀態後更改ImageView圖像

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