Question

我正在android上创建一个项目。我仍然是Android应用程序开发的初学者。我有一个go按钮，点击后，会根据选中的单选按钮将我引导到新活动。我有5个单选按钮，选择一个并按下go按钮后，它应该转到新的活动。问题是，当我在手机上加载应用程序时，当我点击其中一个选项时单选按钮正在显示，但是当我点击进去时，没有任何反应。代码如下：

JAVA代码（India.java）

package com.example.android.travelindia;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;

public class India extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_india);
        this.finish();
       final RadioButton beach = (RadioButton) findViewById(R.id.radio1);
       final RadioButton hillstation = (RadioButton) findViewById(R.id.radio2);
       final RadioButton wildlife = (RadioButton) findViewById(R.id.radio3);
       final RadioButton historical = (RadioButton) findViewById(R.id.radio4);
       final RadioButton reli = (RadioButton) findViewById(R.id.radio5);

       final Button go = (Button) findViewById(R.id.button1);
        go.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (beach.isChecked()) {
                    Intent Intents= new Intent(India.this, sands.class); // <----- START "BEACHES" ACTIVITY
                    startActivity(Intents);
                    setContentView(R.layout.activity_sands);
                    }
                else if (hillstation.isChecked()) {
                        Intent Intentm = new Intent(getApplicationContext(), mountains.class); // <----- START "HIll STATIONS" ACTIVITY
                        startActivityForResult(Intentm, 0);
                    }
                else if (wildlife.isChecked()) {
                        Intent Intentw = new Intent(getApplicationContext(), forests.class); // <----- START "WILDLIFE" ACTIVITY
                        startActivityForResult(Intentw, 0);
                    }
                else if (historical.isChecked()) {
                        Intent Intenth = new Intent(getApplicationContext(), history.class); // <----- START "HISTORICAL MONUMENTS" ACTIVITY
                        startActivityForResult(Intenth, 0);
                    }
                else if (reli.isChecked()) {
                        Intent Intentr = new Intent(getApplicationContext(), religious.class); // <----- START "RELIGIOUS LOCATIONS" ACTIVITY
                        startActivityForResult(Intentr, 0);
                    }
                }
            });

       }
}

Answer 1

你的问题出在你打电话的onCreate（Bundle）上：

 this.finish();

在您setContentView(R.layout.activity_india)之后

告诉当前活动完成。

所以放弃这一行，一切都应该按预期工作。

根据android中选中的单选按钮打开一个新活动

1 个答案: