hzuapps#5 提交实验五代码

Eheech · Mar 30, 2019 · 941c44f · 941c44f
1 parent 13645d6
commit 941c44f
Showing 1 changed file with 64 additions and 0 deletions.
diff --git a/students/soft1714080902421/SettingActivity.java b/students/soft1714080902421/SettingActivity.java
@@ -2,12 +2,76 @@
 
 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.FileOutputStream;
+
 
 public class SettingActivity extends AppCompatActivity {
+    private EditText et_info;
+    private Button mBtnread=null;
+    private Button mBtnsave=null;
+
 
     @Override
+
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_setting);
+        //获取布局文件中的控件
+        et_info = findViewById(R.id.et_info);
+        mBtnread = findViewById(R.id.btn_read);
+        mBtnsave = findViewById(R.id.btn_save);
+        setOnClickListener();
+        //根据id找到按钮
     }
+
+    private void setOnClickListener(){
+        OnClick onClick = new OnClick();
+        mBtnread.setOnClickListener(onClick);
+        mBtnsave.setOnClickListener(onClick);
+        //设置点击事件
+    }
+
+    private class  OnClick  implements View.OnClickListener{
+        @Override
+        public void onClick(View v){
+            switch (v.getId()) {
+                case R.id.btn_save:
+                    String saveinfo=et_info.getText().toString().trim();
+                    FileOutputStream fos;
+                    try {
+                        //保存设定
+                        fos = openFileOutput("data.txt", MODE_APPEND);
+                        fos.write(saveinfo.getBytes());
+                        fos.close();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    Toast.makeText(SettingActivity.this, "设定保存成功", Toast.LENGTH_SHORT).show();
+                    break;
+                case R.id.btn_read:
+                    String context = "";
+                    try {
+                        //获取已保存设定
+                        FileInputStream fis = openFileInput("data.txt");
+                        byte[] buffer = new byte[fis.available()];
+                        fis.read(buffer);
+                        context = new String(buffer);
+                        fis.close();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    Toast.makeText(SettingActivity.this, "已保存的设定为：" + context,Toast.LENGTH_SHORT).show();
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
 }