Add cpu abi info

app/src/main/java/com/github/xch168/ffmpeg/invoker/demo/MainActivity.java

@@ -1,5 +1,6 @@
 package com.github.xch168.ffmpeg.invoker.demo;
 
+import android.os.Build;
 import android.os.Bundle;
 import android.widget.TextView;
 
@@ -13,9 +14,16 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        // Example of a call to a native method
-        TextView tv = findViewById(R.id.sample_text);
-        tv.setText("");
+        TextView tv = findViewById(R.id.tv_cpu_abi);
+        tv.setText("CPU_ABI: " + getCpuAbi());
+    }
+
+    private String getCpuAbi() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+            return Build.CPU_ABI;
+        } else {
+            return Build.SUPPORTED_ABIS[0];
+        }
     }
 
 }

app/src/main/res/layout/activity_main.xml

@@ -7,10 +7,9 @@
     tools:context="com.github.xch168.ffmpeg.invoker.demo.MainActivity">
 
     <TextView
-        android:id="@+id/sample_text"
+        android:id="@+id/tv_cpu_abi"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"