ADD file via upload

CS体系结构-动态系统/delete.java

@@ -0,0 +1,50 @@
+package edu.hzuapps.shudongapp;
+
+import android.os.Bundle;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.snackbar.Snackbar;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.util.List;
+
+import edu.hzuapps.shudongapp.bean.User;
+import edu.hzuapps.shudongapp.util.ToastUtil;
+
+public class delete extends AppCompatActivity {
+
+    private Button button_Delete;
+    private EditText ed_name_Delete;
+    private TextView tv_Delete;
+    private MySQLiteOpenHelper mySQLiteOpenHelper;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_delete);
+
+        ed_name_Delete = findViewById(R.id.ed_name_delete);
+        mySQLiteOpenHelper = new MySQLiteOpenHelper(this);
+    }
+
+    public void deletedata(View view) {
+        String name = ed_name_Delete.getText().toString().trim();
+
+        //按姓名从数据库中删除
+
+        int row = mySQLiteOpenHelper.deleteFromDByName(name);
+        if (row > 0) {
+            ToastUtil.toastLong(this, "删除成功，删了" + row + "条记录");
+        } else {
+            ToastUtil.toastShort(this, "删除失败，没有找到该名字的数据");
+        }
+    }
+}