Android 一键锁屏功能源码-IT计算机-毕业设计.zip

package cn.itcast.lockscreen; import android.app.Activity; import android.app.KeyguardManager; import android.app.admin.DevicePolicyManager; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.os.PowerManager; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.view.WindowManager; import android.widget.Button; /** * device admin : ��ȡ�豸�ij�������ԱȨ�� * * @author zehua * */ public class LockscreenActivity extends Activity implements OnClickListener { private static final String LOCK_TAG = null; private Button bt_lock; private Button bt_wipe; private Button bt_close; private Button bt_uninstall; DevicePolicyManager policyManager; ComponentName componentName; private final int requestCode = 1; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); bt_lock = (Button) this.findViewById(R.id.button1); bt_wipe = (Button) this.findViewById(R.id.button2); bt_close = (Button) this.findViewById(R.id.button3); bt_uninstall = (Button) this.findViewById(R.id.button4); bt_lock.setOnClickListener(this); bt_wipe.setOnClickListener(this); bt_close.setOnClickListener(this); bt_uninstall.setOnClickListener(this); policyManager = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE); componentName = new ComponentName(this, MyAdmin.class); if (!policyManager.isAdminActive(componentName)) { Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN); intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, componentName); startActivity(intent); } } @Override public void onClick(View v) { switch (v.getId()) { case R.id.button1: // 显示出要输入密码才能进入 policyManager.resetPassword("1234", 0); policyManager.lockNow(); break; case R.id.button2: // 清除数据 policyManager.wipeData(0); break; case R.id.button3: // 锁屏并关闭屏幕 systemLock(); break; case R.id.button4: // 锁屏并关闭屏幕 UninstallActivity(); break; } } /** * 锁屏并关闭屏幕 */ private void systemLock() { if (this.policyManager.isAdminActive(this.componentName)) { Window localWindow = getWindow(); WindowManager.LayoutParams localLayoutParams = localWindow.getAttributes(); localLayoutParams.screenBrightness = 0.05F; localWindow.setAttributes(localLayoutParams); this.policyManager.lockNow(); } finish(); } /** * 停用设备管理器并卸载程序 */ private void UninstallActivity(){ this.policyManager.removeActiveAdmin(this.componentName); startActivity(new Intent("android.intent.action.DELETE", Uri.parse("package:cn.itcast.lockscreen"))); finish(); } }