android监控来电显示

当电话来电的时候，我们要监控着电话号码的来电，哪我们是通过代码控制，下面我们看看利用吐丝显示来电显示
 

 
package com.smart;
 
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.widget.Toast;
 
public class Main extends Activity {
 
    public class MyPhoneCallListener extends PhoneStateListener{
 
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
 
            switch (state) {
            case TelephonyManager.CALL_STATE_OFFHOOK:
                Toast.makeText(Main.this, "正在通话中....", Toast.LENGTH_SHORT).show();
                break;
                
                
            case TelephonyManager.CALL_STATE_RINGING:
                Toast.makeText(Main.this, incomingNumber, Toast.LENGTH_SHORT).show();
                break;
            }
            
            
            
            
            super.onCallStateChanged(state, incomingNumber);
        }
        
    }
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TelephonyManager tm=(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
        MyPhoneCallListener myPhoneCallListener=new MyPhoneCallListener();
        tm.listen(myPhoneCallListener, PhoneStateListener.LISTEN_CALL_STATE);
        
    }
}
 
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    
    
<TextView  
    android:id="@+id/phonestate"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    
    />
</LinearLayout>

 

 

main.xml

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android "
     package="org.me.android_callstate">
    <application >
         <activity android:name=".MainActivity" android:label="MainActivity">
            <intent-filter >
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter >
        </activity >
    </application >
    < uses-permission android:name="android.permission.READ_PHONE_STATE"></ uses-permission>
</manifest >

 

不要忘记上面红色字体的地方，不让会错误的。