一个简单的线程切换类，链式调用，实现简单的线程切换与参数传递。
例：
RunList.runOnBackground(new RunList.IRun<Integer, String>() {
@Override
public String run(Integer integer) {
Log.d(TAG, "run: " + Thread.currentThread().getName()
+ ", " + integer);
return String.valueOf(integer + 1);
}
}, 1)
.runOnUiThread(new RunList.IRun<String, Integer>() {
@Override
public Integer run(String string) {
Log.d(TAG, "run: " + Thread.currentThread().getName()
+ ", " + string);
return Integer.valueOf(string + 1);
}
})
.runOnBackground(new RunList.IRun<Integer, String>() {
@Override
public String run(Integer integer) {
Log.d(TAG, "run: " + Thread.currentThread().getName()
+ ", " + integer);
return String.valueOf(integer + 1);
}
})
.runOnUiThread(new RunList.IRun<String, Integer>() {
@Override
public Integer run(String string) {
Log.d(TAG, "run: " + Thread.currentThread().getName()
+ ", " + string);
return Integer.valueOf(string + 1);
}
})
.start();