10-okHttp的同步與異步

個人理解以下：

 

同步： 實時的在等待返回結果；

異步：能夠不是同步執行的，放入到執行隊列中。

 

因此建議：若是須要根絕請求的結構作些判斷應當用 同步，異步可能因爲時間前後出現問題。

 

/*post異步請求: postDataWithParame*/
	private int ispower() {

		power = 0;
		OkHttpClient client = new OkHttpClient();//建立OkHttpClient對象。
		FormBody.Builder formBody = new FormBody.Builder();//建立表單請求體
		formBody.add("username","ansen");//傳遞鍵值對參數
		formBody.add("password","123");  //傳遞鍵值對參數
		Request request = new Request.Builder()//建立Request 對象。
				.url("http://172.25.1.234:8080/DormitoryHelper/user/login")
				.post(formBody.build())//傳遞請求體
				.build();
		client.newCall(request).enqueue(new Callback() {  //回調方法的使用與get異步請求相同。
			@Override
			public void onFailure(Call call, IOException e) {
				rtdate = "請求失敗";
			}

			@Override
			public void onResponse(Call call, Response response) throws IOException {
				if(response.isSuccessful()){//回調的方法執行在子線程。
					Log.d("kwwl","獲取數據成功了");
					Log.d("kwwl","response.code()=="+response.code());
					String rt = response.body().string();
					rtdate = rt;
					Log.d("kwwl","response.body().string()==" + rt);
					if(rt.equals("1")){
						power = 1;  //有權限
					}
					else{
						power = Integer.valueOf(rt);  //無權限
					}
				}
			}
		});
		return power;
	}


	/*post同步請求: postDataWithParame */
	public void ispower_tongbu(){
		new Thread(new Runnable() {
			@Override
			public void run() {
				try {
					OkHttpClient client = new OkHttpClient();//建立OkHttpClient對象
					FormBody.Builder formBody = new FormBody.Builder();//建立表單請求體
					formBody.add("username","ansen");//傳遞鍵值對參數
					formBody.add("password","123");  //傳遞鍵值對參數

					Request request = new Request.Builder()
							.url("http://172.25.1.234:8080/DormitoryHelper/user/login")
							.post(formBody.build())//傳遞請求體
							.build();
					Response response = null;
					response = client.newCall(request).execute();//獲得Response 對象
					if (response.isSuccessful()) {
						Log.d("kwwl","獲取數據成功了");
						Log.d("kwwl","response.code()=="+response.code());
						String rt = response.body().string();
						rtdate = rt;
						Log.d("kwwl","response.body().string()==" + rt);
						if(rt.equals("1")){
							power = 1;  //有權限
						}
						else{
							power = 0;  //無權限
						}
					}
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}).start();
	}

	/*************提示框*******************/
	private void showExitDialog1(String num){
//		String rt = String.valueOf(num);
		new AlertDialog.Builder(this)
				.setTitle("提示")
				.setMessage("您沒有修改權限" + num)
				.setPositiveButton("肯定", null)
				.show();
	}
	private void showExitDialog(){
		new AlertDialog.Builder(this)
				.setTitle("提示")
				.setMessage("您沒有修改權限")
				.setPositiveButton("肯定", null)
				.show();
	}

	@Override
	public void onStopTrackingTouch(SeekBar seekBar) {
		int x = 0;
		switch (seekBar.getId()) {
		case R.id.sb_data_uptime_h:

			ispower_tongbu();
			if(power == 1){
				sendCommand(KEY_UPTIME_H, (seekBar.getProgress() + UPTIME_H_OFFSET ) * UPTIME_H_RATIO + UPTIME_H_ADDITION);
			}
			else{
				//沒有權限
//				showExitDialog1(String.valueOf(pr_data_uptime_h));
				showExitDialog1(power+ "------power");
				showExitDialog1(x + "-----x");
				showExitDialog1(rtdate + "-----data");
				showExitDialog();
				tv_data_uptime_h.setText(String.valueOf(pr_data_uptime_h));
				sb_data_uptime_h.setProgress(pr_data_uptime_h);
			}
			break;
		case R.id.sb_data_uptime_m:
			ispower_tongbu();
			if(power == 1) {
				sendCommand(KEY_UPTIME_M, (seekBar.getProgress() + UPTIME_M_OFFSET) * UPTIME_M_RATIO + UPTIME_M_ADDITION);
			}
			else{
				//沒有權限
//				showExitDialog1(String.valueOf(pr_data_uptime_m));
				showExitDialog();
				tv_data_uptime_m.setText(String.valueOf(pr_data_uptime_m));
				sb_data_uptime_m.setProgress(pr_data_uptime_m);
			}
			break;
		default:
			break;
		}
	}