Android 监听home、锁屏、解屏简单实现

喜欢ヅ旅行 2021-10-19 08:54 394阅读 0赞

activity 代码：

package com.demo;
    
    import android.app.ListActivity;
    import android.content.Context;
    import android.content.Intent;
    import android.content.IntentFilter;
    import android.os.Bundle;
    import android.util.Log;
    import android.widget.SimpleAdapter;
    import android.widget.TextView;
    
    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.HashMap;
    
    public class KeyListenActivity extends ListActivity implements Update {
    
        private SimpleAdapter listItemAdapter;
        ArrayList<HashMap<String, Object>> listItems = new ArrayList<HashMap<String, Object>>();
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            if (!isTaskRoot()) {
                final Intent intent = getIntent();
                final String intentAction = intent.getAction();
                if (intent.hasCategory(Intent.CATEGORY_LAUNCHER) && intentAction != null && intentAction.equals(Intent
                        .ACTION_MAIN)) {
                    finish();
                    return;
                }
            }
            setContentView(R.layout.activity_applist);
            TextView textView = findViewById(R.id.title);
            textView.setText("手机监听");
            initListView();
            this.setListAdapter(listItemAdapter);
            registerHomeKeyReceiver(this);
        }
    
        @Override
        protected void onDestroy() {
            super.onDestroy();
            Log.i(LOG_TAG, "onDestroy");
            unregisterHomeKeyReceiver(this);
        }
    
        //自定义的广播接收者
        private HomeWatcherReceiver mHomeKeyReceiver = null;
        String LOG_TAG = "TAG";
    
        //注册广播接收者，监听Home键
        private void registerHomeKeyReceiver(Context context) {
            Log.i(LOG_TAG, "registerHomeKeyReceiver");
            mHomeKeyReceiver = new HomeWatcherReceiver(this);
            IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
            homeFilter.addAction(Intent.ACTION_SCREEN_OFF);
            homeFilter.addAction(Intent.ACTION_SCREEN_ON);
            homeFilter.addAction(Intent.ACTION_USER_PRESENT);
            context.registerReceiver(mHomeKeyReceiver, homeFilter);
        }
    
        //取消监听广播接收者
        private void unregisterHomeKeyReceiver(Context context) {
            Log.i(LOG_TAG, "unregisterHomeKeyReceiver");
            if (null != mHomeKeyReceiver) {
                context.unregisterReceiver(mHomeKeyReceiver);
            }
        }
    
        @Override
        public void updateList(int type) {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");
            Date date = new Date(System.currentTimeMillis());
            HashMap<String, Object> map = new HashMap<String, Object>();
            System.out.println("type==============="+type);
            if (type == 0) {
                map.put("ItemTitle", "监听到一次home按键");
                map.put("ItemPackage", simpleDateFormat.format(date));
            } else if (type == 1) {
                map.put("ItemTitle", "监听到一次锁屏");
                map.put("ItemPackage", simpleDateFormat.format(date));
            } else if (type == 2) {
                map.put("ItemTitle", "监听到一次解屏");
                map.put("ItemPackage", simpleDateFormat.format(date));
            }
    
            listItems.add(map);
            //重新设置适配器
            KeyListenActivity.this.setListAdapter(listItemAdapter);
        }
    
        private void initListView()   {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");
            Date date = new Date(System.currentTimeMillis());
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put("ItemTitle", "开始监听");
            map.put("ItemPackage", simpleDateFormat.format(date));
            listItems.add(map);
    
            listItemAdapter = new SimpleAdapter(this, listItems,
                    R.layout.list_item,
                    new String[] {"ItemTitle", "ItemPackage"},
                    new int[ ] {R.id.ItemTitle, R.id.ItemPackage}
            );
        }
    }

监听类代码：

package com.demo;
    
    import android.content.BroadcastReceiver;
    import android.content.Context;
    import android.content.Intent;
    import android.util.Log;
    import android.widget.Toast;
    
    public class HomeWatcherReceiver extends BroadcastReceiver {
        private static final String LOG_TAG = "HomeReceiver";
        private static final String SYSTEM_DIALOG_REASON_KEY = "reason";
        private static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
        private static final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
        private static final String SYSTEM_DIALOG_REASON_LOCK = "lock";
        private static final String SYSTEM_DIALOG_REASON_ASSIST = "assist";
    
        private Update update;
    
        public HomeWatcherReceiver(Update update) {
            this.update = update;
        }
    
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
    
            Log.i(LOG_TAG, "=======================1===========");
            if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
                // android.intent.action.CLOSE_SYSTEM_DIALOGS
                String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
                Log.i(LOG_TAG, "==================2================");
    
                if (SYSTEM_DIALOG_REASON_HOME_KEY.equals(reason)) {
                    // 短按Home键
                    Log.i(LOG_TAG, "==================3================");
    
                    update.updateList(0);
                }
                else if (SYSTEM_DIALOG_REASON_RECENT_APPS.equals(reason)) {
                    // 长按Home键 或者 activity切换键
                    Log.i(LOG_TAG, "long press home key or activity switch");
    
                }
                else if (SYSTEM_DIALOG_REASON_LOCK.equals(reason)) {
                    // 锁屏
                    Log.i(LOG_TAG, "lock");
    
                }
                else if (SYSTEM_DIALOG_REASON_ASSIST.equals(reason)) {
                    // samsung 长按Home键
                    Log.i(LOG_TAG, "assist");
                }
    
            } else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
                Log.i(LOG_TAG, "==================5===============");
                update.updateList(1);
            } else if (action.equals(Intent.ACTION_SCREEN_ON)) {
                Log.i(LOG_TAG, "==================6===============");
                update.updateList(2);
            }
        }
    
    }

**这里有个地方要注意,就是监听锁屏和解屏必须动态注册广播。**

private void registerHomeKeyReceiver(Context context) {
            Log.i(LOG_TAG, "registerHomeKeyReceiver");
            mHomeKeyReceiver = new HomeWatcherReceiver(this);
            IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
            homeFilter.addAction(Intent.ACTION_SCREEN_OFF);
            homeFilter.addAction(Intent.ACTION_SCREEN_ON);
            homeFilter.addAction(Intent.ACTION_USER_PRESENT);
            context.registerReceiver(mHomeKeyReceiver, homeFilter);
        }