连接到 Internet 时调用事件答案

【问题标题】：Calling the event when it is connected to Internet连接到 Internet 时调用事件
【发布时间】：2014-11-16 17:50:46
【问题描述】：

我想处理这个事件，它将检查是否有互联网连接，如果是，我将调用这段代码：

/** Called when the user clicks the ImageView */
    public void mapOfWasteActivity() {
        mapOfWaste = (ImageView)findViewById(R.id.imageViewMap);
        mapOfWaste.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Main_Activity.this, MapOfWasteActivity.class);
                startActivity(intent);
            }
        });
    }

如果你没有与此相关的原因我：

Intent intent = new Intent(Main_Activity.this, Test.class);
startActivity(intent);

【问题讨论】：

标签： android google-maps android-intent android-activity

【解决方案1】：

使用此功能。如果已连接或正在连接，它将返回 true。

public  boolean isNetworkConnected() {
            boolean isConnected=false;
            try{
                ConnectivityManager cm =
                    (ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE);

                NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
                isConnected = activeNetwork != null &&
                                  activeNetwork.isConnectedOrConnecting();
                return isConnected;
            }
            catch(Exception e)
            {       
                e.printStackTrace();  
            }
            return isConnected;
        }

【讨论】：

【解决方案2】：

试试这个代码

/** Called when the user clicks the ImageView */
public void mapOfWasteActivity() {
    mapOfWaste = (ImageView)findViewById(R.id.imageViewMap);
    mapOfWaste.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

             if(isNetworkConnected()){
              Intent intent = new Intent(Main_Activity.this, MapOfWasteActivity.class);
            startActivity(intent);

             }else{

            Intent intent = new Intent(Main_Activity.this, Test.class);
             startActivity(intent);

             }

        }
    });
}


public  boolean isNetworkConnected() {
        boolean isConnected=false;
        try{
            ConnectivityManager cm =
                (ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE);

            NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
            isConnected = activeNetwork != null &&
                              activeNetwork.isConnectedOrConnecting();
            return isConnected;
        }
        catch(Exception e)
        {       
            e.printStackTrace();  
        }
        return isConnected;
    }

【讨论】：

谢谢，原来是这样。