要在framework曾增加一个一键灭屏的功能,如:在下拉状态栏中怎加一个图标,点击一下就灭屏。我只到要调用DevicePolicyManager类的lockNow()方法,但是在framework层(SystemUI部分)的如何调用这个方法呢,求指导!
我现在的做法是写一个Activity,该Activity调用lockNow方法,然后再在framework里的代码里启动这个Activity,代码如下
[code=javapackage com.android.systemui.statusbar.toolbar;import android.app.Activity;
import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;public class LockScreen extends DeviceAdminReceiver {
static final int RESULT_ENABLE = 1; public static class Controller extends Activity { DevicePolicyManager mDPM;
ComponentName mDeviceAdminSample; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//首先我们要获得android设备管理代理
mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
//LockScreen 继承自 DeviceAdminReceiver
mDeviceAdminSample = new ComponentName(Controller.this,
LockScreen.class);
//得到当前设备管理器有没有激活
boolean active = mDPM.isAdminActive(mDeviceAdminSample);
if (!active) {
//如果没有激活的话,就去提示用户激活(第一次运行程序时)
getAdmin();
}else{
//如果已经激活的话,就执行立即锁屏
mDPM.lockNow();
}
// killMyself ,锁屏之后就立即kill掉我们的Activity,避免资源的浪费;
//android.os.Process.killProcess(android.os.Process.myPid());
finish();
} public void getAdmin() {
// 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,
"cly:激活设备管理器");
startActivityForResult(intent, RESULT_ENABLE);
}
}
}
][/code]
然后再调用
[code=java mLockScreenIcon.setClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(mContext, LockScreen.Controller.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(intent);
//lockScreen();
}
});][/code]
我现在的做法是写一个Activity,该Activity调用lockNow方法,然后再在framework里的代码里启动这个Activity,代码如下
[code=javapackage com.android.systemui.statusbar.toolbar;import android.app.Activity;
import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;public class LockScreen extends DeviceAdminReceiver {
static final int RESULT_ENABLE = 1; public static class Controller extends Activity { DevicePolicyManager mDPM;
ComponentName mDeviceAdminSample; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//首先我们要获得android设备管理代理
mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
//LockScreen 继承自 DeviceAdminReceiver
mDeviceAdminSample = new ComponentName(Controller.this,
LockScreen.class);
//得到当前设备管理器有没有激活
boolean active = mDPM.isAdminActive(mDeviceAdminSample);
if (!active) {
//如果没有激活的话,就去提示用户激活(第一次运行程序时)
getAdmin();
}else{
//如果已经激活的话,就执行立即锁屏
mDPM.lockNow();
}
// killMyself ,锁屏之后就立即kill掉我们的Activity,避免资源的浪费;
//android.os.Process.killProcess(android.os.Process.myPid());
finish();
} public void getAdmin() {
// 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,
"cly:激活设备管理器");
startActivityForResult(intent, RESULT_ENABLE);
}
}
}
][/code]
然后再调用
[code=java mLockScreenIcon.setClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(mContext, LockScreen.Controller.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(intent);
//lockScreen();
}
});][/code]
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