監控手機電源回撥電話通知功能
由於手機常常沒電於是寫個APP通知一下別人
MainActivity.java
package lin.powercall;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.ToggleButton;
public class MainActivity extends Activity {
MyBatteryReceiver mbr = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mbr = new MyBatteryReceiver();
final TextView tv2 =(TextView)findViewById(R.id.tv2);
ToggleButton tb = (ToggleButton)findViewById(R.id.tb);
tb.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO 自動產生的方法 Stub
if (isChecked) {
IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
registerReceiver(mbr,filter);
} else {
unregisterReceiver(mbr);
TextView tv1 = (TextView)findViewById(R.id.tv1);
tv1.setText(null);
tv2.setText(null);
}
}
});
}
@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;
}
private class MyBatteryReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// TODO 自動產生的方法 Stub
String num = "";
String percentstring = "";
int percentint=100;
int current = intent.getExtras().getInt("level");
int total = intent.getExtras().getInt("scale");
int percent = current*100/total;
TextView tv =(TextView)findViewById(R.id.tv1);
TextView tv2 =(TextView)findViewById(R.id.tv2);
EditText et1 = (EditText)findViewById(R.id.et1);
EditText et2 = (EditText)findViewById(R.id.et2);
percentstring = et2.getText().toString();
Log.d("設定警示電量", percentstring);
tv.setText("目前電池電量："+percent+"% ‧");
tv2.setText("設定警示電量："+percentstring+"% ‧");
percentint = Integer.parseInt(percentstring);
if(percent<=percentint){
num = et1.getText().toString();
Intent dial = new Intent();
dial.setAction("android.intent.action.CALL");
dial.setData(Uri.parse("tel://"+num));
startActivity(dial);
}
}
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
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" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="電話號碼：" />
<EditText
android:id="@+id/et1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10" >
<requestFocus />
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="電源低於%警示：" />
<EditText
android:id="@+id/et2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10" />
</LinearLayout>
<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="24sp"
android:text="請啟動電池監控" />
<TextView
android:id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ToggleButton
android:id="@+id/tb"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textOn="電源打開"
android:textOff="電源關閉"
/>
<!-- ToggleButton 電源按鈕控制 -->
</LinearLayout>AndroidManifest.xml 加入
<intent-filter>
<action android:name="android.intent.action.CALL_BUTTON" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter><uses-permission android:name="android.permission.CALL_PHONE"/>這樣就可以了
原始碼：
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