Don't try to access Build.CPU_ABI2 on API version 7.

briar-android/src/org/briarproject/android/CrashReportActivity.java

@@ -201,16 +201,18 @@ public class CrashReportActivity extends Activity implements OnClickListener {
 		int sdk = Build.VERSION.SDK_INT;
 		statusMap.put("Android version:", release + " (" + sdk + ")");
 
-		// CPU architecture
+		// CPU architectures
 		String arch = null;
 		if(Build.VERSION.SDK_INT >= 21) {
 			for(String abi : Build.SUPPORTED_ABIS) {
 				if(arch == null) arch = abi;
 				else arch = arch + ", " + abi;
 			}
-		} else {
+		} else if(Build.VERSION.SDK_INT >= 8) {
 			if(Build.CPU_ABI2 == null) arch = Build.CPU_ABI;
 			else arch = Build.CPU_ABI + ", " + Build.CPU_ABI2;
+		} else {
+			arch = Build.CPU_ABI;
 		}
 		statusMap.put("Architecture:", arch);
 

briar-android/src/org/briarproject/plugins/tor/TorPluginFactory.java

@@ -46,9 +46,11 @@ public class TorPluginFactory implements DuplexPluginFactory {
 		List<String> abis = new ArrayList<String>();
 		if(Build.VERSION.SDK_INT >= 21) {
 			for(String abi : Build.SUPPORTED_ABIS) abis.add(abi);
-		} else {
+		} else if(Build.VERSION.SDK_INT >= 8) {
 			abis.add(Build.CPU_ABI);
 			if(Build.CPU_ABI2 != null) abis.add(Build.CPU_ABI2);
+		} else {
+			abis.add(Build.CPU_ABI);
 		}
 		boolean supported = false;
 		for(String abi : abis) if(abi.startsWith("armeabi")) supported = true;