hzuapps#5 hzuapps#991 第五次实验

HHuangF · May 18, 2018 · b898cd6 · b898cd6
1 parent fa238e3
commit b898cd6
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diff --git a/soft1614080902440/Fifth/Soft1614080902440p1.png b/soft1614080902440/Fifth/Soft1614080902440p1.png
diff --git a/soft1614080902440/Fifth/Soft1614080902440p2.png b/soft1614080902440/Fifth/Soft1614080902440p2.png
diff --git a/soft1614080902440/app/src/main/AndroidManifest.xml b/soft1614080902440/app/src/main/AndroidManifest.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="edu.androidlabs.soft1614080902440">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".Soft1614080902440Activity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".Soft1614080902440Activity1" />
+        <activity android:name=".Soft1614080902440Activity2"></activity>
+    </application>
+
+</manifest>
diff --git a/...p/src/main/java/edu/hzuapps/androidlabs/Soft1614080902440/Soft1614080902440Activity2.java b/...p/src/main/java/edu/hzuapps/androidlabs/Soft1614080902440/Soft1614080902440Activity2.java
@@ -0,0 +1,75 @@
+package edu.androidlabs.soft1614080902440;
+
+import android.app.Activity;
+import android.content.ContextWrapper;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+import java.io.BufferedWriter;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.OutputStreamWriter;
+
+public class Soft1614080902440Activity2 extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity2_soft1614080902440);
+        //获取UI对象
+        Button bt_write = (Button) findViewById(R.id.write);
+        Button bt_read = (Button) findViewById(R.id.read);
+        //对写入数据的按钮添加监听器
+        bt_write.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String text = ((EditText) findViewById(R.id.EditText_1)).getText().toString();
+                write(text);
+
+            }
+        });
+        //对读取数据的按钮添加监听器
+        bt_read.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                read();
+
+            }
+        });
+    }
+    //写入数据
+    public void write(String text) {
+                FileOutputStream out = null;
+                BufferedWriter writer = null;
+                try {
+                        out = openFileOutput("test.txt", ContextWrapper.MODE_APPEND);
+                        writer = new BufferedWriter(new OutputStreamWriter(out));
+                        writer.write(text);
+                        writer.flush();
+                        out.flush();
+                        writer.close();
+                        out.close();
+                   } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                        Toast.makeText(Soft1614080902440Activity2.this, "发布成功", Toast.LENGTH_SHORT).show();
+
+            }
+    //读取数据
+     public void read() {
+                String content = "";
+                try {
+                        FileInputStream fis = openFileInput("test.txt");
+                        byte[] buffer = new byte[fis.available()];
+                        fis.read(buffer);
+                     content = new String(buffer);
+                        fis.close();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                Toast.makeText(Soft1614080902440Activity2.this, "发布内容为：" + content, Toast.LENGTH_SHORT).show();
+           }
+}
+
diff --git a/soft1614080902440/app/src/main/res/layout/activity2_soft1614080902440.xml b/soft1614080902440/app/src/main/res/layout/activity2_soft1614080902440.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".Soft1614080902440Activity2">
+
+    <EditText
+        android:id="@+id/EditText_1"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:layout_alignParentTop="true"
+        android:background="@color/white"
+        android:hint="请输入要发布的内容..."
+        android:layout_marginTop="50dp"
+        android:text="" />
+    <Button
+        android:id="@+id/write"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="发布信息"
+        android:layout_below="@id/EditText_1"
+        android:layout_marginTop="60dp"
+        android:layout_marginLeft="50dp" />
+    <Button
+        android:id="@+id/read"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="查询信息"
+        android:layout_below="@id/EditText_1"
+        android:layout_marginTop="60dp"
+        android:layout_marginLeft="230dp" />
+
+
+</RelativeLayout>