I'm making a remote control app with 6 buttons which works with samsung tv's. For kitkat I used the new api ConsumerIRmanager but I want the app to work with jellybean also so the app works great for kitkat version but it won't start on jellybean here is the code:
public class MainActivity extends Activity {
Object irdaService;
Method irWrite;
SparseArray<String> irData;
TextView mFreqsText;
ConsumerIrManager mCIR;
ImageButton power;
SeekBar sBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
// Be sure to call the super class.
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_layout);
power = (ImageButton) findViewById(R.id.powerBtn);
power.setVisibility(View.GONE);
irData = new SparseArray<String>();
irData.put(
R.id.toggleButton1,
hex2dec("0000 006d 0022 0003 00a9 00a8 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0040 0015 0015 0015 003f 0015 003f 0015 003f 0015 003f 0015 003f 0015 003f 0015 0702 00a9 00a8 0015 0015 0015 0e6e"));
irData.put(
R.id.upProg,
hex2dec("0000 006d 0022 0003 00a9 00a8 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 0015 0015 003f 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 003f 0015 003f 0015 0015 0015 0040 0015 003f 0015 003f 0015 0702 00a9 00a8 0015 0015 0015 0e6e"));
irData.put(
R.id.downBtn,
hex2dec("0000 006d 0022 0003 00a9 00a8 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 003f 0015 0015 0015 003f 0015 003f 0015 003f 0015 0702 00a9 00a8 0015 0015 0015 0e6e"));
irData.put(
R.id.minusBtn,
hex2dec("0000 006d 0022 0003 00a9 00a8 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 0015 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 003f 0015 003f 0015 003f 0015 003f 0015 0702 00a9 00a8 0015 0015 0015 0e6e"));
irData.put(
R.id.plusBtn,
hex2dec("0000 006d 0022 0003 00a9 00a8 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 003f 0015 003f 0015 0702 00a9 00a8 0015 0015 0015 0e6e"));
irData.put(
R.id.muteBtn,
hex2dec("0000 006c 0022 0003 00ab 00aa 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 003f 0015 003f 0015 0015 0015 0015 0015 0015 0015 003f 0015 0015 0015 003f 0015 0015 0015 0015 0015 003f 0015 003f 0015 003f 0015 0714 00ab 00aa 0015 0015 0015 0e91"));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
irInit4KitKat();
} else {
irInit4JellyBean();
}
}
@TargetApi(Build.VERSION_CODES.KITKAT)
public void irInit4KitKat() {
// Get a reference to the ConsumerIrManager
mCIR = (ConsumerIrManager) getSystemService(Context.CONSUMER_IR_SERVICE);
}
public void irInit4JellyBean() {
Object irService = this.getSystemService("irda");
//irService.getClass();
Class irClass = irService.getClass();
Class params[] = new Class[1];
params[0] = String.class;
try {
irWrite = irClass.getMethod("write_irsend", params);
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
}
public void irSend(View view) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
irSend4Kitkat(view);
} else {
irSend4JellyBean(view);
}
}
@TargetApi(Build.VERSION_CODES.KITKAT)
private void irSend4Kitkat(View view) {
String data = irData.get(view.getId());
if (data != null) {
String values[] = data.split(",");
int[] pattern = new int[values.length - 1];
for (int i = 0; i < pattern.length; i++) {
pattern[i] = Integer.parseInt(values[i + 1]);
}
mCIR.transmit(Integer.parseInt(values[0]), pattern);
}
}
private void irSend4JellyBean(View view) {
String data = irData.get(view.getId());
if (data != null) {
try {
irWrite.invoke(irdaService, data);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
protected String hex2dec(String irData) {
List<String> list = new ArrayList<String>(Arrays.asList(irData
.split(" ")));
list.remove(0); // dummy
int frequency = Integer.parseInt(list.remove(0), 16); // frequency
list.remove(0); // seq1
list.remove(0); // seq2
for (int i = 0; i < list.size(); i++) {
list.set(i, Integer.toString(Integer.parseInt(list.get(i), 16)));
}
frequency = (int) (1000000 / (frequency * 0.241246));
list.add(0, Integer.toString(frequency));
irData = "";
for (String s : list) {
irData += s + ",";
}
return irData;
}
}
mainfest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.irtest"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.TRANSMIT_IR"
android:required="false" />
<uses-feature android:name="android.hardware.consumerir" />
<uses-sdk
android:minSdkVersion="16"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:screenOrientation="portrait"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I get unable to start activity ComponentInfo com.example.irtest/com.irtest.MainActivity : java.lang.NullPointerException and I have problems at this line Class irClass = irService.getClass();
The "irda" service is only available on Samsung devices prior to KitKat. On KitKat and upwards, all IR commands are handled in Consumer IR API.