#4 #1031第四次实验报告

soft1614080902410/app/src/main/AndroidManifest.xml

@@ -16,7 +16,13 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".Soft1614080902410_2"></activity>
+        <activity android:name=".Soft1614080902410_2" />
+        <activity android:name=".Soft1614080902410Activity_3" />
+        <activity android:name=".Soft1614080902410Activity_4" />
+        <activity
+            android:name=".Soft1614080902410Activity_5"
+            android:label="@string/title_activity_soft1614080902410_5"
+            android:theme="@style/AppTheme.NoActionBar" />
     </application>
 
 </manifest>

soft1614080902410/app/src/main/java/com/example/liyang/soft1614080902410/Soft1614080902410Activity_3.java

@@ -0,0 +1,13 @@
+package com.example.liyang.soft1614080902410;
+
+        import android.support.v7.app.AppCompatActivity;
+        import android.os.Bundle;
+
+public class Soft1614080902410Activity_3 extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_soft16140809024103);
+    }
+}

soft1614080902410/app/src/main/java/com/example/liyang/soft1614080902410/Soft1614080902410Activity_4.java

@@ -0,0 +1,14 @@
+
+package com.example.liyang.soft1614080902410;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class Soft1614080902410Activity_4 extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_soft1614080902410_4);
+    }
+}

soft1614080902410/app/src/main/java/com/example/liyang/soft1614080902410/Soft1614080902410_2.java

@@ -1,15 +1,117 @@
 package com.example.liyang.soft1614080902410;
 
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Environment;
 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.TextView;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
 
 public class Soft1614080902410_2 extends AppCompatActivity {
+    private TextView textView;
+    public static final String DIRECTORY = "demo";
+    public static final String FILENAME = "file_demo.txt";
+
+    public static final String TAG = Soft1614080902410_2.class.getSimpleName();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_soft1614080902410_2);
 
+        final Activity thisActivity = this;
+        Button btnHome1 = (Button) findViewById(R.id.buttom2);
+        Button btnHome2 = (Button) findViewById(R.id.buttom3);
+        btnHome1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View vv) {
+                Intent intent1 = new Intent(thisActivity,Soft1614080902410Activity_4.class);
+                thisActivity.startActivity(intent1);
+            }
+        });
+        btnHome2.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v1) {
+                Intent intent2 = new Intent(thisActivity, Soft1614080902410Activity_3.class);
+                thisActivity.startActivity(intent2);
+            }
+        });
+
+        String text = "content";
+        saveTextIntoExternalStorage(text);
+    }
+
+    private void saveTextIntoExternalStorage(String text) {
+        if (!isExternalStorageWritable()) {
+            Log.e(TAG, "外部存储不可写!");
+            return;
+        }
+
+        File dir = getPublicExtStorageDir(DIRECTORY, Environment.DIRECTORY_DOWNLOADS);
+        File file = new File(dir, FILENAME);
+
+        try {
+            FileOutputStream fos = new FileOutputStream(file);
+            fos.write(text.getBytes());
+            fos.close();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        // 显示结果
+        showResult(file.getAbsolutePath());
+    }
+
+    /* Checks if external storage is available for read and write */
+    private boolean isExternalStorageWritable() {
+        String state = Environment.getExternalStorageState();
+        if (Environment.MEDIA_MOUNTED.equals(state)) {
+            return true;
+        }
+        return false;
+    }
+
+    /* Checks if external storage is available to at least read */
+    private boolean isExternalStorageReadable() {
+        String state = Environment.getExternalStorageState();
+        if (Environment.MEDIA_MOUNTED.equals(state) ||
+                Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
+            return true;
+        }
+        return false;
+    }
+
+    // 创建公开的外部存储目录（App卸载时不会删除）
+    private File getPublicExtStorageDir(String dirName, String type) {
+        if (type == null) { // 指定文件类型
+            type = Environment.DIRECTORY_PICTURES;
+        }
+        File dir = new File(Environment //
+                .getExternalStoragePublicDirectory(type), dirName);
+        if (!dir.mkdirs()) {
+            Log.e(TAG, "目录无法创建!");
+        }
+
+        long freeSpace = dir.getFreeSpace();
+        Log.i(TAG, "剩余空间大小: " + (freeSpace / 1024 / 1024) + "MB");
+        long totalSpace = dir.getTotalSpace();
+        Log.i(TAG, "总空间大小: " + (totalSpace / 1024 / 1024) + "MB");
+
+        return dir;
+    }
 
+    private void showResult(String result) {
+        ((TextView) findViewById(R.id.text_path))//
+                .setText(result.toCharArray(), 0, result.length());
     }
 }

soft1614080902410/app/src/main/res/layout/activity_soft16140809024103.xml

@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="utf-8"?>
+<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"
+    android:orientation="vertical"
+    android:background="#006400"
+    tools:context=".Soft1614080902410Activity_3">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="120dp"
+        android:layout_weight="1"
+        android:orientation="vertical">
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            >
+            <ImageView
+                android:layout_width="100dp"
+                android:layout_height="match_parent"
+                android:background="@drawable/ozil"/>
+            <Button
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:text="Mesut oezil
+场上位置:中场
+国籍：德国"
+                android:textSize="15dp"/>
+        </LinearLayout>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="120dp"
+        android:layout_weight="1"
+        android:orientation="vertical">
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            >
+            <ImageView
+                android:layout_width="100dp"
+                android:layout_height="match_parent"
+                android:background="@drawable/ramsey"/>
+
+            <Button
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:text="ARON RAMSEY
+场上位置;中场
+国籍:威尔士"
+                android:textSize="15dp" />
+        </LinearLayout>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="120dp"
+        android:layout_weight="1"
+        android:orientation="vertical">
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            >
+            <ImageView
+                android:layout_width="100dp"
+                android:layout_height="match_parent"
+                android:background="@drawable/aubu"/>
+            <Button
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:text="Aubameyang
+场上位置;前锋
+国籍;加蓬"
+                android:textSize="15dp"/>
+        </LinearLayout>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="120dp"
+        android:layout_weight="1"
+        android:orientation="vertical">
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            >
+            <ImageView
+                android:layout_width="100dp"
+                android:layout_height="match_parent"
+                android:background="@drawable/lacazette"/>
+            <Button
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:text="LACAZETTE
+场上位置;前锋
+国籍;法国"
+                android:textSize="15dp"/>
+        </LinearLayout>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="120dp"
+        android:layout_weight="1"
+        android:orientation="vertical">
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            >
+            <ImageView
+                android:layout_width="100dp"
+                android:layout_height="match_parent"
+                android:background="@drawable/cazorla"/>
+            <Button
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:text="SANTI CAZORLA
+场上位置;中场
+国籍;西班牙"
+                android:textSize="15dp"/>
+        </LinearLayout>
+    </LinearLayout>
+</LinearLayout>

soft1614080902410/app/src/main/res/layout/activity_soft1614080902410_2.xml

@@ -1,9 +1,32 @@
 <?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=".Soft1614080902410_2">
+    tools:context=".Soft1614080902410_2"
+    android:orientation="vertical"
+    android:background="@drawable/ic_launcher3">
 
-</android.support.constraint.ConstraintLayout>
+    <Button
+        android:id="@+id/buttom2"
+        android:layout_width="136dp"
+        android:layout_height="66dp"
+        android:gravity="center"
+        android:text="球队赛程"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="80dp"
+        tools:layout_editor_absoluteX="124dp"
+        tools:layout_editor_absoluteY="371dp" />
+
+    <Button
+        android:id="@+id/buttom3"
+        android:layout_width="136dp"
+        android:layout_height="66dp"
+        android:gravity="center"
+        android:text="球队球员"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="200dp"
+        tools:layout_editor_absoluteX="124dp"
+        tools:layout_editor_absoluteY="63dp" />
+</LinearLayout>