hzuapps#5 #YZT6 第五次实验

YZT6 · Apr 2, 2019 · ad941c7 · ad941c7
1 parent 2065665
commit ad941c7
Show file tree

Hide file tree

Showing 3 changed files with 169 additions and 1 deletion.
diff --git a/...p/src/main/java/edu/hzuapps/androidlabs/Soft1714080902240/Soft1714080902240Activity3.java b/...p/src/main/java/edu/hzuapps/androidlabs/Soft1714080902240/Soft1714080902240Activity3.java
@@ -0,0 +1,105 @@
+package edu.hzuapps.androidlabs.soft1714080902240;
+
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class Soft1714080902240Activity3 extends AppCompatActivity {
+    private TextView edittext;
+
+    public static final String DIRECTORY = "demo";
+    public static final String FILENAME = "file_demo.txt";
+    public static final String TAG = Soft1714080902240Activity3.class.getSimpleName();
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_soft17140809022403);
+
+
+        edittext = (TextView) findViewById(R.id.danci);
+        Button button = (Button) findViewById(R.id.btn_save);
+
+        button.setOnClickListener(new MyonclickListener());
+    }
+
+    private class MyonclickListener implements View.OnClickListener {
+
+        @Override
+        public void onClick(View v) {
+            String string = edittext.getText().toString();
+            saveTextIntoInternalStorage(string);
+        }
+    }
+
+    private void saveTextIntoInternalStorage(String text) {
+        // 获取内部存储目录
+                File dir = this.getFilesDir();
+        //        //File dir = getCacheDir();
+
+        if (dir.isDirectory()) {
+//            dir.mkdir();
+//            dir.mkdirs();
+        }
+
+        if (dir.isFile()) {
+            // D:/Abc.txt , -> D:/Abc1.txt ->D:/abc.txt
+        }
+
+        File file = new File(dir, FILENAME);
+
+   //     try {
+     //      File = File.createTempFile(FILENAME, null, dir);
+    //   } catch (IOException e) {
+    //        e.printStackTrace();
+    //   }
+
+        if (file.exists()) { // 判断文件是否存在
+            Log.i(TAG, file.getAbsolutePath());
+            Log.i(TAG, file.length() + ""); // bytes*1024=kb *1024 MB
+            Log.i(TAG, file.isFile() + "");
+            file.canRead();
+            file.canWrite();
+            file.canExecute();
+
+            file.getFreeSpace();
+            file.getTotalSpace();
+        }
+
+        FileOutputStream fos = null;  // 字节流  | char | cn : gbk 2 bytes, utf8 3 bytes
+
+        try { // 使用API打开输出流
+            fos = openFileOutput(FILENAME, MODE_PRIVATE);
+            //FileOutputStream fos = new FileOutputStream(file);
+            fos.write(text.getBytes()); // 写入内容
+            fos.close(); // 关闭流
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                fos.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+        Toast.makeText(Soft1714080902240Activity3.this,"保存成功", 0).show();
+    }
+
+
+}
diff --git a/students/soft1714080902240/app/src/main/res/layout/activity_soft17140809022402.xml b/students/soft1714080902240/app/src/main/res/layout/activity_soft17140809022402.xml
@@ -6,4 +6,26 @@
     android:layout_height="match_parent"
     tools:context="edu.hzuapps.androidlabs.soft1714080902240.Soft1714080902240Activity2">
 
-    </android.support.constraint.ConstraintLayout>
+    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:background="@drawable/firstread"
+        tools:layout_editor_absoluteX="16dp"
+        tools:layout_editor_absoluteY="0dp"></LinearLayout>
+
+    <RelativeLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content">
+        <Button
+            android:id="@+id/button2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="点击输入今天练习的单词"
+            tools:layout_editor_absoluteX="116dp"
+            tools:layout_editor_absoluteY="590dp"
+            android:layout_marginTop="550dp"
+            />
+    </RelativeLayout>
+
+
+</android.support.constraint.ConstraintLayout>
diff --git a/students/soft1714080902240/app/src/main/res/layout/activity_soft17140809022403.xml b/students/soft1714080902240/app/src/main/res/layout/activity_soft17140809022403.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout 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="edu.hzuapps.androidlabs.soft1714080902240.Soft1714080902240Activity3">
+
+    <RelativeLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:id="@+id/text1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="请输入您学习的单词"
+            android:layout_marginTop="20dp"
+            />
+
+        <EditText
+            android:id="@+id/danci"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/text1"
+            android:layout_marginTop="20dp"
+            android:ems="15">
+
+            <requestFocus />
+        </EditText>
+
+        <Button
+            android:id="@+id/btn_save"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="保存单词"
+            android:layout_marginTop="130dp"/>
+    </RelativeLayout>
+
+
+</android.support.constraint.ConstraintLayout>