#7 #788 第7次实验

students/soft1714080902414/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902414/DatasaveActivity.java

@@ -0,0 +1,63 @@
+package edu.hzuapps.androidlabs.soft1714080902414;
+
+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 DatasaveActivity extends AppCompatActivity implements View.OnClickListener {
+    private Button button1;
+    private Button button2;
+    private EditText editText1;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_datasave);
+        button1=(Button) findViewById(R.id.bt1);
+        button2=(Button) findViewById(R.id.bt2);
+        editText1=(EditText) findViewById(R.id.et1);
+        button1.setOnClickListener(this);
+        button2.setOnClickListener(this);
+    }
+
+    @Override
+    public void onClick(View view) {
+        switch (view.getId())
+        {
+            case R.id.bt1: String save=editText1.getText().toString().trim();
+                FileOutputStream fos;
+                try{
+                    fos=openFileOutput("data.txt",MODE_PRIVATE);
+                    fos.write(save.getBytes());
+                    fos.close();
+                } catch (FileNotFoundException e) {
+                    e.printStackTrace();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+                Toast.makeText( DatasaveActivity.this,"数据保存成功",Toast.LENGTH_SHORT).show();
+                break;
+            case R.id.bt2:   String content="";
+                try {
+                    FileInputStream fis=openFileInput("data.txt");
+                    byte[] buffer=new byte[fis.available()];
+                    fis.read(buffer);
+                    content=new String(buffer);
+                    fis.close();
+                } catch (FileNotFoundException e) {
+                    e.printStackTrace();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+                Toast.makeText(DatasaveActivity.this,"保存的数据为"+content,Toast.LENGTH_SHORT).show();
+                break;
+        }
+    }
+}

students/soft1714080902414/app/src/main/java/edu/hzuapps/androidlabs/soft1714080902414/WordtestanswerActivity.java

@@ -0,0 +1,13 @@
+package edu.hzuapps.androidlabs.soft1714080902414;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class WordtestanswerActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_wordtestanswer);
+    }
+}