Android 主流网络请求框架 Volley

最新推荐文章于 2021-02-24 11:55:39 发布

原创最新推荐文章于 2021-02-24 11:55:39 发布 · 552 阅读

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本文介绍了一种在Android应用中使用Volley库进行GET和POST请求的方法。通过创建自定义的请求类，实现网络数据的获取及错误处理，并展示了如何在Activity生命周期中管理这些请求。

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Volley经常用于频繁请求数据量不大的时候，用法：

public class MyApplication extends Application {
public static RequestQueue queue;

@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
queue = Volley.newRequestQueue(getApplicationContext());
}

public static RequestQueue getHttpQueue() {
return queue;
}

}

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//volley_Get();
volley_Post();
}

@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
MyApplication.getHttpQueue().cancelAll("abcPost");//通过之前设置的TAG取消
MyApplication.getHttpQueue().cancelAll("abcGet");
}

private void volley_Post() {
String url = "http://apis.juhe.cn/mobile/get?";
StringRequest request = new StringRequest(Method.POST, url,
new Listener<String>() {

@Override
public void onResponse(String arg0) {
Toast.makeText(MainActivity.this, arg0,
Toast.LENGTH_LONG).show();
}
}, new Response.ErrorListener() {

@Override
public void onErrorResponse(VolleyError arg0) {
Toast.makeText(MainActivity.this, "网络请求失败",
Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() throws AuthFailureError {
HashMap<String, String> map = new HashMap<String, String>();
map.put("phone", "13666666666");
map.put("key", "335adcc4e891ba4e4be6d7534fd54c5d");
return map;
}
};
request.setTag("abcPost");
MyApplication.getHttpQueue().add(request);
}

private void volley_Get() {
String url = "http://apis.juhe.cn/mobile/get?phone=15821591618&key=335adcc4e891ba4e4be6d7534fd54c5d";
StringRequest request = new StringRequest(Method.GET, url,
new Listener<String>() {

@Override
public void onResponse(String arg0) {
Toast.makeText(MainActivity.this, arg0,
Toast.LENGTH_LONG).show();
}
}, new Response.ErrorListener() {

@Override
public void onErrorResponse(VolleyError arg0) {
Toast.makeText(MainActivity.this, "网络请求失败",
Toast.LENGTH_LONG).show();
}
});
request.setTag("abcGet");
MyApplication.getHttpQueue().add(request);
}
}