在runInUiThread中使用setText时出错[重复]

Question

我需要一个线程等待一段时间，然后在TextView中更改文本。我的搜索找到了如何使用runOnUiThread

public class MainActivity extends AppCompatActivity {

    public int i = 0;
    private TextView mText;
    private Thread thread;

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

        mText = (TextView)findViewById(R.id.text);
    }

    public void start (View v) {
        runThread();


    }

    private void runThread() {

        new Thread() {
            public void run() {
                while (true) {
                    try {
                        runOnUiThread(new Runnable() {

                            @Override
                            public void run() {
                                i++;
                                mText.setText((i));
                            }
                        });
                        Thread.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }.start();
    }

}

09-26 20:26:34.054 22254-22254/com.horizon.testtimerthread E/AndroidRuntime: FATAL EXCEPTION: main
                                                                             android.content.res.Resources$NotFoundException: String resource ID #0x1
                                                                                 at android.content.res.Resources.getText(Resources.java:1058)
                                                                                 at android.support.v7.widget.ResourcesWrapper.getText(ResourcesWrapper.java:52)
                                                                                 at android.widget.TextView.setText(TextView.java:3866)
                                                                                 at com.horizon.testtimerthread.MainActivity$1$1.run(MainActivity.java:39)
                                                                                 at android.os.Handler.handleCallback(Handler.java:615)
                                                                                 at android.os.Handler.dispatchMessage(Handler.java:92)
                                                                                 at android.os.Looper.loop(Looper.java:177)
                                                                                 at android.app.ActivityThread.main(ActivityThread.java:4947)
                                                                                 at java.lang.reflect.Method.invokeNative(Native Method)
                                                                                 at java.lang.reflect.Method.invoke(Method.java:511)
                                                                                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
                                                                                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
                                                                                 at dalvik.system.NativeStart.main(Native Method)

提前感谢您的帮助。

Answer 1

mtext.settext((i))是问题所在。

Android认为您引用的是一个字符串ID，并崩溃了，因为它找不到ID为1的字符串。如果你想把文本设置为“1”，“2”等······然后编写mtext.settext((integer.tostring(i)))