获取手机信号强度
要想获取信号强度,需要加入权限:AndroidManifest.xml<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="Firstdroid.Tutorial.GetGsmSignalStrength"android:versionCod
·
要想获取信号强度,需要加入权限:
<uses -permission android:name="android.permission.CHANGE_NETWORK_STATE"></uses>
AndroidManifest.xml
< ?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="Firstdroid.Tutorial.GetGsmSignalStrength"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".GetGsmSignalStrength"
android:label="@string/app_name">
<intent -filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent>
</activity>
</application>
<uses -sdk android:minSdkVersion="4" />
<uses -permission android:name="android.permission.CHANGE_NETWORK_STATE"></uses>
</manifest>
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.widget.Toast;
public class GetGsmSignalStrength extends Activity
{
/* This variables need to be global, so we can used them onResume and onPause method to
stop the listener */
TelephonyManager Tel;
MyPhoneStateListener MyListener;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/* Update the listener, and start it */
MyListener = new MyPhoneStateListener();
Tel = ( TelephonyManager )getSystemService(Context.TELEPHONY_SERVICE);
Tel.listen(MyListener ,PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
}
/* Called when the application is minimized */
@Override
protected void onPause()
{
super.onPause();
Tel.listen(MyListener, PhoneStateListener.LISTEN_NONE);
}
/* Called when the application resumes */
@Override
protected void onResume()
{
super.onResume();
Tel.listen(MyListener,PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
}
/* —————————– */
/* Start the PhoneState listener */
/* —————————– */
private class MyPhoneStateListener extends PhoneStateListener
{
/* Get the Signal strength from the provider, each tiome there is an update 从得到的信号强度,每个tiome供应商有更新*/
@Override
public void onSignalStrengthsChanged(SignalStrength signalStrength)
{
super.onSignalStrengthsChanged(signalStrength);
Toast.makeText(getApplicationContext(), "Go to Firstdroid!!! GSM Cinr = "
+ String.valueOf(signalStrength.getGsmSignalStrength()), Toast.LENGTH_SHORT).show();
}
};/* End of private Class */
}/* GetGsmSignalStrength */
更多推荐
已为社区贡献2条内容
所有评论(0)