扩展InstrumentationTestRunner，传递自定义参数

 通过继承InstrumentationTestRunner，就可以传递自定义参数到TestRunner。这里是传递port、packageName、activityName，其中port是用于在手机侧启动一个TCP服务的端口，packageName和activityName是用于指定首个启动的activity的参数配置：

import android.os.Bundle;
import android.test.InstrumentationTestRunner;

public class AthrunInstrumentationTestRunner extends InstrumentationTestRunner {

    private static String packageName = "com.taobao.fario";

 private static String activityName = "com.taobao.fario.MainActivity";

    private static String port = "1234";

    public static String getPort() {
        return port;
    }

    public static String getPackageName() {
        return packageName;
    }

    public static String getActivityName() {
        return activityName;
    }

    @Override
    public void onCreate(Bundle arguments) {
        if (arguments != null) {
            String port = arguments.getString("port");
            String packageName = arguments.getString("packageName");
            String activityName = arguments.getString("activityName");
            if (port != null) {
                AthrunInstrumentationTestRunner.port = port;
            }
            if (packageName != null) {
                AthrunInstrumentationTestRunner.packageName = packageName;
            }
            if (activityName != null) {
                AthrunInstrumentationTestRunner.activityName = activityName;
            }
        }

        super.onCreate(arguments);
    }

执行命令变成：

adb -s SH14MTJ01900 shell am instrument -w -e port 1234 -e class org.athrun.remoterunner.TravelTest#test org.athrun.remoterunner/org.athrun.instrumentation.AthrunInstrumentationTestRunner

在Testcase中如何使用传入的packageName和activityName：

public class TravelTest extends ActivityInstrumentationTestCase2 {

    private static String getPkgName() {
        String packageName = AthrunInstrumentationTestRunner.getPackageName();
        return packageName;
    }

    private static String getActivityClassStr() throws ClassNotFoundException {
        String activityName = AthrunInstrumentationTestRunner.getActivityName();
        return activityName;
    }

    public TravelTest() throws Exception {
        super(getPkgName(), getActivityClassStr());
    }

-e 是属于扩展参数，使用这种方法是可以不断扩展的。