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android调用状态广播接收器的例子

android

activity_main.xml

< RelativeLayout xmlns:androclass="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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" >< TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" />< /RelativeLayout>

活动类
package com.example.callstatebroadcastreceiver; import android.os.Bundle; import android.app.Activity; import android.view.Menu; public class MainActivity extends Activity {@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); }@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }}

IncommingCallReceiver
package com.example.callstatebroadcastreceiver; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.telephony.TelephonyManager; import android.widget.Toast; public class IncommingCallReceiver extends BroadcastReceiver{ Context context; @Override public void onReceive(Context context, Intent intent){ try{ String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE); if(state.equals(TelephonyManager.EXTRA_STATE_RINGING)){ Toast.makeText(context, "Phone Is Ringing", Toast.LENGTH_LONG).show(); }if(state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)){ Toast.makeText(context, "Call Recieved", Toast.LENGTH_LONG).show(); }if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)){ Toast.makeText(context, "Phone Is Idle", Toast.LENGTH_LONG).show(); } } catch(Exception e){e.printStackTrace(); } }}

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