Merge pull request #1500 from lveking/master

#5 #460 第5次实验

students/soft1714080902114/app/src/main/AndroidManifest.xml

@@ -9,14 +9,14 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".Soft1714080902114Activity">
+        <activity android:name=".Main2Activity"></activity>
+        <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".MainActivity"></activity>
     </application>
 
 </manifest>

students/soft1714080902114/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902114/Main2Activity.java

@@ -0,0 +1,73 @@
+package edu.hzuapps.androidlabs.soft1714080902114;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+public class Main2Activity extends AppCompatActivity {
+        private EditText et_info;
+        private Button btn_save;
+        private Button btn_read;
+
+        protected void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            setContentView(R.layout.activity_main2);
+            et_info=(EditText) findViewById(R.id.et_info);
+            btn_save=(Button) findViewById(R.id.btn_save);
+            btn_read=(Button) findViewById(R.id.btn_read);
+            btn_save.setOnClickListener(new ButtonListener());
+            btn_read.setOnClickListener(new ButtonListener());
+        }
+        private class ButtonListener implements View.OnClickListener {
+            @SuppressLint("WrongConstant")
+            public void onClick(View v) {
+                switch(v.getId()){
+                    case R.id.btn_save:
+                        String saveinfo=et_info.getText().toString().trim();
+                        FileOutputStream fos;
+                        try{
+                            fos=openFileOutput("data.txt", Context.MODE_APPEND);
+                            fos.write(saveinfo.getBytes());
+                            fos.close();
+                        }
+                        catch (Exception e) {
+                            e.printStackTrace();
+                        }
+                        Toast.makeText(Main2Activity.this,"笔记保存成功",0).show();
+                        break;
+                    case R.id.btn_read:
+                        String content="";
+                        try{
+                            FileInputStream fis=openFileInput("data.txt");
+                            byte[] buffer=new byte[((FileInputStream) fis).available()];
+                            fis.read(buffer);
+                            content=new String(buffer);
+                            fis.close();
+                        } catch (FileNotFoundException e) {
+                            e.printStackTrace();
+                        } catch (IOException e) {
+                            e.printStackTrace();
+                        }
+                        Toast.makeText(Main2Activity.this,"保存的笔记是："+content,0).show();
+                        break;
+                    default:
+                        break;
+                }
+            }
+        }
+
+
+}
+
+

students/soft1714080902114/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902114/MainActivity.java

@@ -1,13 +1,46 @@
 package edu.hzuapps.androidlabs.soft1714080902114;
 
+import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
 
 public class MainActivity extends AppCompatActivity {
 
-    @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        Button button1 = (Button) findViewById(R.id.button_1);
+        button1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(MainActivity.this, Main2Activity.class);
+                startActivity(intent);
+            }
+        });
+
+        Button button2 = (Button) findViewById(R.id.button_2);
+        button2.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(MainActivity.this, Main2Activity.class);
+                startActivity(intent);
+            }
+        });
+
+
+        Button button3 = (Button) findViewById(R.id.button_3);
+        button3.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(MainActivity.this, Main2Activity.class);
+                startActivity(intent);
+            }
+        });
+
+
     }
 }
+

students/soft1714080902114/app/src/main/res/layout/activity_main.xml

@@ -1,18 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout 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=".MainActivity"
-    android:background="@drawable/img">
+    android:orientation="vertical" >
 
-    <ImageView
-        android:id="@+id/img"
+    <Button
+        android:id="@+id/button_1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:src="@drawable/img"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:text="新建笔记"/>
+    <Button
+        android:id="@+id/button_2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="读取记录"/>
+    <Button
+        android:id="@+id/button_3"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="清楚记录"/>
+
 
-</android.support.constraint.ConstraintLayout>
+</LinearLayout>

students/soft1714080902114/app/src/main/res/layout/activity_main2.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".Main2Activity">
+
+
+
+    <TextView
+        android:id="@+id/textView1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true"
+        android:textSize="20dp"
+        android:text="请输入你要保存的笔记："/>
+
+    <EditText
+        android:id="@+id/et_info"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@+id/textView1"
+        android:ems="10" >
+        <requestFocus  />
+    </EditText>
+    <Button
+        android:id="@+id/btn_read"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignRight="@+id/et_info"
+        android:layout_below="@+id/et_info"
+        android:text="查看笔记"/>
+    <Button
+        android:id="@+id/btn_save"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/et_info"
+        android:text="保存笔记"/>
+
+</RelativeLayout>

students/soft1714080902114/app/src/main/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+</resources>

students/soft1714080902114/app/src/main/res/values/styles.xml

@@ -0,0 +1,11 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+</resources>