Question

我正在关注本教程并且工作正常。 https://msdn.microsoft.com/en-us/library/system.enum.isdefined(v=vs.110).aspx

但就我而言，我有200张照片。用户将在EditText中写入单词，点击按钮后，分别显示图片。如何在下面的代码中更改图片来源：

 EditText edit = FindViewById<EditText>(Resource.Id.edtName);

   button.Click += delegate 
        {
            img.SetImageResource(Resource.Drawable.sample2);

        };

其中“sample2”更改为edit.Text。（为用户写文字...）

Answer 1

使用方法更改drawable

package com.example.java.beta;

import android.database.sqlite.SQLiteDatabase;
import android.graphics.Typeface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputType;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class register extends AppCompatActivity {
    EditText ed_username;
    TextView btn_register;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);


        ed_username = (EditText)findViewById(R.id.ed_username);
        btn_register = (TextView)findViewById(R.id.btn_register);


        Typeface unfont = Typeface.createFromAsset(getAssets(),"font_welcome.woff");
        ed_username.setTypeface(unfont);
        btn_register.setTypeface(unfont);







    }


    public void reg(View view) {


                accounts call = new accounts(register.this);
                SQLiteDatabase create = call.getWritableDatabase();
                create.execSQL("insert into users values(?,?)",
                        new String [] {ed_username.getText().toString(),ed_password.getText().toString()});

        }


    }
}

Xamarin - 如何动态更改图像源？

1 个答案: