Android工具代码

/**
     * 取消锁屏
     */
private void cancelLockScreen() {
KeyguardManager mKeyguardManager = (KeyguardManager) getSystemService(KEYGUARD_SERVICE);
        KeyguardLock mKeyguardLock = mKeyguardManager.newKeyguardLock(TAG);
        mKeyguardLock.disableKeyguard();

}

/**

     * 打开方向传感器
     */
private void openOrientationSensor() {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

}

在主线程中访问网络：

A：

1、在oncreate里面放置：

StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);

2、类名之前加上：@SuppressLint("NewApi")

B：

AndroidManifest.xml文件中

<uses-sdk
        android:minSdkVersion="8"
         />