add NFCApp/res

lwjobs · Mar 31, 2020 · a7b0d7d · a7b0d7d
1 parent a580a2b
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diff --git a/NFCApp/app/src/androidTest/java/cn/edu/jssvc/nfcapp/ExampleInstrumentedTest.java b/NFCApp/app/src/androidTest/java/cn/edu/jssvc/nfcapp/ExampleInstrumentedTest.java
@@ -0,0 +1,27 @@
+package cn.edu.jssvc.nfcapp;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+
+        assertEquals("cn.edu.jssvc.nfcapp", appContext.getPackageName());
+    }
+}
diff --git a/NFCApp/app/src/main/AndroidManifest.xml b/NFCApp/app/src/main/AndroidManifest.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="cn.edu.jssvc.nfcapp">
+
+    <uses-permission android:name="android.permission.NFC"/>
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/logo2"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/logo2"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity"
+            android:launchMode="singleTop">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".InstalledAppListActivity"/>
+    </application>
+
+</manifest>
diff --git a/NFCApp/app/src/main/java/cn/edu/jssvc/nfcapp/InstalledAppListActivity.java b/NFCApp/app/src/main/java/cn/edu/jssvc/nfcapp/InstalledAppListActivity.java
@@ -0,0 +1,47 @@
+package cn.edu.jssvc.nfcapp;
+
+import android.app.ListActivity;
+import android.content.Intent;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class InstalledAppListActivity extends ListActivity implements
+        AdapterView.OnItemClickListener {
+    private List<String> mPackages = new ArrayList<>();
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        PackageManager packageManager = getPackageManager();
+        List<PackageInfo> packageInfos = packageManager
+                .getInstalledPackages(PackageManager.GET_ACTIVITIES);
+        for (PackageInfo packageInfo : packageInfos) {
+            mPackages.add(packageInfo.applicationInfo.loadLabel(packageManager)
+                    + "\n" + packageInfo.packageName);
+        }
+
+        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(this,
+                android.R.layout.simple_list_item_1, android.R.id.text1,
+                mPackages);
+        setListAdapter(arrayAdapter);
+        getListView().setOnItemClickListener(this);
+    }
+
+    @Override
+    public void onItemClick(AdapterView<?> parent, View view, int position,
+                            long id) {
+        Intent intent = new Intent();
+        intent.putExtra("package_name", mPackages.get(position));
+        setResult(1, intent);
+        finish();
+    }
+
+}
diff --git a/NFCApp/app/src/main/java/cn/edu/jssvc/nfcapp/MainActivity.java b/NFCApp/app/src/main/java/cn/edu/jssvc/nfcapp/MainActivity.java
@@ -0,0 +1,116 @@
+package cn.edu.jssvc.nfcapp;
+
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.nfc.NdefMessage;
+import android.nfc.NdefRecord;
+import android.nfc.NfcAdapter;
+import android.nfc.Tag;
+import android.nfc.tech.Ndef;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class MainActivity extends AppCompatActivity {
+
+    private Button button;
+    private String mPackageName;
+    private NfcAdapter mNfcAdapter;
+    private PendingIntent mPendingIntent;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        button = findViewById(R.id.button);
+
+        mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
+        mPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this,
+                getClass()), 0);
+
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(getApplicationContext(), InstalledAppListActivity.class);
+                startActivityForResult(intent, 0);
+            }
+        });
+
+    }
+
+    @Override
+    public void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+        if (mPackageName == null)
+            return;
+
+        Tag detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
+
+        writeNFCTag(detectedTag);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        if (mNfcAdapter != null)
+            //拦截其他NFC应用
+            mNfcAdapter.enableForegroundDispatch(this, mPendingIntent, null,
+                    null);
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+
+        if (mNfcAdapter != null)
+            //取消拦截
+            mNfcAdapter.disableForegroundDispatch(this);
+    }
+
+    public void writeNFCTag(Tag tag) {
+        if (tag == null) {
+            return;
+        }
+        NdefMessage ndefMessage = new NdefMessage(
+                new NdefRecord[]{NdefRecord
+                        .createApplicationRecord(mPackageName)});
+        int size = ndefMessage.toByteArray().length;
+        try {
+            Ndef ndef = Ndef.get(tag);
+            if (ndef != null) {
+                ndef.connect();
+
+                if (!ndef.isWritable()) {
+                    return;
+                }
+                if (ndef.getMaxSize() < size) {
+                    return;
+                }
+                ndef.writeNdefMessage(ndefMessage);
+                Toast.makeText(this, "写入成功", Toast.LENGTH_LONG).show();
+            }
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (resultCode == 1) {
+            button.setText(data.getExtras().getString(
+                    "package_name"));
+            String temp = button.getText().toString();
+            mPackageName = temp.substring(temp.indexOf("\n") + 1);
+        }
+
+    }
+
+
+}
diff --git a/NFCApp/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/NFCApp/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>