package com.itydl.lockscreen;

import android.os.Bundle;
import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Intent;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

	private DevicePolicyManager dmp;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		dmp = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);
	}

	/**
	 * 一鍵鎖屏
	 * 
	 * @param v
	 */
	public void lockScreen(View v) {
		// 如果沒有激活設備管理員，提醒用戶做事
		ComponentName who = new ComponentName(this, DeviceAdminSample.class);
		if (dmp.isAdminActive(who)) {// true表示已經激活
			dmp.lockNow();// 一鍵鎖屏

		} else {
			/**根據官方文檔，寫出啟動設備管理器的活動
			 * // Launch the activity to have the user enable our admin. Intent
			 * intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
			 * intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,
			 * mDeviceAdminSample);
			 * intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
			 * mActivity.getString(R.string.add_admin_extra_app_text));
			 * startActivityForResult(intent, REQUEST_CODE_ENABLE_ADMIN);
			 */
			
			Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
			intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,
					 who);
			intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
					  "設備管理器。。。");
			startActivityForResult(intent, 1);
		}
	}

}