Question

我正在尝试在textView中显示toast消息，但它需要每秒更新一次以显示所有包名称（每秒）但我的代码中出现错误＆＃34 ;不能引用在不同方法中定义的内部类中的非最终变量pnum＆＃34;

行中的

＆＃34; msgto.setText（＆＃34;优化＆＃34; + procInfos.get（PNUM）.processName）;＆＃34;

        // display all package names
        ActivityManager actvityManager = (ActivityManager) getApplicationContext()
                .getSystemService(getApplicationContext().ACTIVITY_SERVICE);
        List<RunningAppProcessInfo> procInfos = actvityManager
                .getRunningAppProcesses();
        for (int pnum = 0; pnum < procInfos.size(); pnum++) {
            if ((procInfos.get(pnum)).processName.contains("android")
                    || (procInfos.get(pnum)).processName.contains("system")
                    || (procInfos.get(pnum)).processName.contains("huawei")
                    || (procInfos.get(pnum)).processName.contains("adil")) {

            } else {
                new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(2000);
                    //do your thing here
                     TextView msgto = (TextView) findViewById(R.id.optimizedapp);
                     msgto.setText("optimized " +
                     procInfos.get(pnum).processName);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();
            }
        }
    }

我尝试将整个代码放在我的线程中，但在log cat中获取此错误（2秒后即线程时间）

06-30 06:35:15.379: E/AndroidRuntime(5281): FATAL EXCEPTION: Thread-12964
06-30 06:35:15.379: E/AndroidRuntime(5281): Process: com.example.xtremenetbooster, PID: 5281
06-30 06:35:15.379: E/AndroidRuntime(5281): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.

    // THREAD

    new Thread(new Runnable() {
        @Override
        public void run() {
            try {
                Thread.sleep(2000);
                // do your thing here
                // display all package names
                ActivityManager actvityManager = (ActivityManager) getApplicationContext()
                        .getSystemService(
                                getApplicationContext().ACTIVITY_SERVICE);
                List<RunningAppProcessInfo> procInfos = actvityManager
                        .getRunningAppProcesses();
                for (int pnum = 0; pnum < procInfos.size(); pnum++) {
                    if ((procInfos.get(pnum)).processName
                            .contains("android")
                            || (procInfos.get(pnum)).processName
                                    .contains("system")
                            || (procInfos.get(pnum)).processName
                                    .contains("huawei")
                            || (procInfos.get(pnum)).processName
                                    .contains("adil")) {
                        // Toast.makeText(getApplicationContext(),
                        // "system apps",
                        // Toast.LENGTH_SHORT).show();
                    } else {

                        TextView msgto = (TextView) findViewById(R.id.optimizedapp);
                        msgto.setText("optimized "
                                + procInfos.get(pnum).processName);
                    }
                }
                //
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }).start();
} // THREAD

Answer 1

当您在pnum循环中明确定义pnum

时，您的错误来自于尝试访问msgto.setText("optimized " + procInfos.get(pnum).processName); @ for

see me

Answer 2

我只想在循环中创建一个新的final int：

Dim result = JsonConvert.DeserializeObject(jsonstring) 'deserialize it
Dim tempfo As String = result("rgInventory").ToString 'get rgInventory
Console.WriteLine(tempfo)

在文本中显示Toast消息查看android

2 个答案: