Android开发学习之路-抢红包助手开发全攻略

背景:新年之际,微信微博支付宝红包是到处飞,但是,自己的手速总是比别人慢一点最后导致红包没抢到,红包助手就应运而生。

需求:收到红包的时候进行提醒,然后跳转到红包的界面方便用户

思路:获取“读取通知信息”权限,然后开启服务监控系统通知,判断如果是微信红包就进行提醒(声音),然后跳转到红包所在的地方

界面:

Android开发学习之路-抢红包助手开发全攻略

界面分为两部分,一部分是可以对App进行操作的,下面是一个可以滑动的界面,提示用户如何是软件正常工作,布局代码如下:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/root"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="5dp"
android:orientation="vertical"
tools:context="com.fndroid.administrator.justforyou.MainActivity"> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="3"
android:text="打开提示音"/> <CheckBox
android:id="@+id/isMusic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/> </LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="音量调节"/> <SeekBar
android:id="@+id/seekbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"/> </LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"> <TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:text="有红包亮屏并解锁"/> <CheckBox
android:id="@+id/isUnlock"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout> <Button
android:id="@+id/setPermision"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="设置通知权限"/> <ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"> <LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="声明:"/> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="本软件为个人开发所得,只能对微信红包进行提醒。请合理使用本软件,使用不当造成的各种行为均与本人无关。软件使用过程不联网,不存在任何盗窃用户信息行为,请放心使用。"/> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="使用方法:"/> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="①如果未赋予软件读取通知权限,点击按钮“设置通知权限"/> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="②在本软件右侧勾选上,并确认提示信息"/> <ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitCenter"
android:src="@drawable/inf"/> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="③关闭微信群的消息免打扰(取消图中的绿色按钮)"/> <ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/inf2"/>
</LinearLayout>
</ScrollView>
</LinearLayout>

app打开的时候开启一个服务,编写一个NotificationListenerService的子类并实现onNotificationPosted和onNotificationRemoved方法,前面的方法会在收到通知的时候调用

// 编写一个NotificationListenerService的子类并实现onNotificationPosted和onNotificationRemoved方法
// 这两个方法在从SDK版本21的时候开始变成了非抽象,不重写则不能兼容21以下设备
public class NotificationService extends NotificationListenerService { private KeyguardManager.KeyguardLock kl; @Override
public void onNotificationPosted(StatusBarNotification sbn) {
// 主界面设置的信息保存在SharedPreferences中,在这里进行获取
SharedPreferences sharedPreferences = getSharedPreferences("userdata", MODE_PRIVATE); // 判断消息是否为微信红包
if (sbn.getNotification().tickerText.toString().contains("[微信红包]") && sbn.getPackageName
().equals("com.tencent.mm")) { // 读取设置信息,判断是否该点亮屏幕并解开锁屏,解锁的原理是把锁屏关闭掉
if (sharedPreferences.getBoolean("isUnlock",true)) {
KeyguardManager km = (KeyguardManager) getSystemService(getApplicationContext()
.KEYGUARD_SERVICE);
kl = km.newKeyguardLock("unlock"); // 把系统锁屏暂时关闭
kl.disableKeyguard();
PowerManager pm = (PowerManager) getSystemService(getApplicationContext()
.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP |
PowerManager.SCREEN_DIM_WAKE_LOCK, "bright");
wl.acquire();
wl.release();
} try {
// 打开notification所对应的pendingintent
sbn.getNotification().contentIntent.send(); } catch (PendingIntent.CanceledException e) {
e.printStackTrace();
} // 判断是否该播放提示音
if (sharedPreferences.getBoolean("isMusic",true)){
MediaPlayer mediaPlayer = new MediaPlayer().create(this, R.raw.heihei);
mediaPlayer.start();
} // 这里监听一下系统广播,判断如果屏幕熄灭就把系统锁屏还原
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.intent.action.SCREEN_OFF");
ScreenOffReceiver screenOffReceiver = new ScreenOffReceiver();
registerReceiver(screenOffReceiver, intentFilter); } } class ScreenOffReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (kl != null) {
// 还原锁屏
kl.reenableKeyguard();
}
}
} @Override
public void onNotificationRemoved(StatusBarNotification sbn) {
super.onNotificationRemoved(sbn);
}
}

主的activity,注释在代码中了,就不详细说了

public class MainActivity extends AppCompatActivity implements CompoundButton
.OnCheckedChangeListener, View.OnClickListener,SeekBar.OnSeekBarChangeListener { private LinearLayout root;
private CheckBox isMusic;
private CheckBox isUnlock;
private SharedPreferences.Editor editor;
private SharedPreferences sharedPreferences;
private Button setPermision;
private SeekBar seekBar;
private AudioManager audioManager; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); // 获取控件实例
root = (LinearLayout) findViewById(R.id.root);
isMusic = (CheckBox) findViewById(R.id.isMusic);
isUnlock = (CheckBox) findViewById(R.id.isUnlock);
setPermision = (Button) findViewById(R.id.setPermision);
seekBar = (SeekBar) findViewById(R.id.seekbar); // 注册监听
isMusic.setOnCheckedChangeListener(this);
isUnlock.setOnCheckedChangeListener(this);
setPermision.setOnClickListener(this);
seekBar.setOnSeekBarChangeListener(this); // 读取设置信息
sharedPreferences = getSharedPreferences("userdata", MODE_PRIVATE);
editor = sharedPreferences.edit();
boolean music = sharedPreferences.getBoolean("isMusic", true);
boolean unlock = sharedPreferences.getBoolean("isUnlock", true);
isMusic.setChecked(music);
isUnlock.setChecked(unlock); // 获得Audiomanager,控制系统音量
audioManager = (AudioManager) getSystemService(this.AUDIO_SERVICE);
seekBar.setMax(audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC));
seekBar.setProgress(audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)); // 监听系统媒体音量改变,并改变界面上的Seekbar的进度
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.media.VOLUME_CHANGED_ACTION");
VolumReceiver receiver = new VolumReceiver();
registerReceiver(receiver,intentFilter); // 开启服务
Intent intent = new Intent(MainActivity.this, NotificationService.class);
startService(intent);
} @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// 判断返回键点击,提示用户是否确认退出
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
Snackbar snackbar = Snackbar.make(root, "退出软件", Snackbar.LENGTH_LONG)
.setAction("确认", new View.OnClickListener() {
@Override
public void onClick(View v) {
MainActivity.this.finish();
}
});
snackbar.show();
return true;
}
return super.onKeyDown(keyCode, event);
} @Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// checkbox的点击监听
switch (buttonView.getId()) {
case R.id.isMusic:
editor.putBoolean("isMusic", isChecked);
editor.commit();
break;
case R.id.isUnlock:
editor.putBoolean("isUnlock", isChecked);
editor.commit();
break;
} } @Override
public void onClick(View v) {
switch (v.getId()){
case R.id.setPermision:
// 打开系统里面的服务,方便用户直接赋予权限
Intent intent = new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS);
startActivity(intent);
break;
} } @Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
} @Override
public void onStartTrackingTouch(SeekBar seekBar) {
} @Override
public void onStopTrackingTouch(SeekBar seekBar) {
// seekbar的监听,滑动停止就修改系统媒体音量
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,seekBar.getProgress(),0);
} // 音量广播接收
class VolumReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
seekBar.setProgress(audioManager.getStreamVolume(AudioManager.STREAM_MUSIC));
}
}
}

Mainfest

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.fndroid.administrator.justforyou"
xmlns:android="http://schemas.android.com/apk/res/android"> <uses-permission android:name="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE"/>
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" /> <application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<service android:name=".NotificationService"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
</application> </manifest>

gradle添加依赖,因为用了Snackbar

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
}
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