我添加了一个切换按钮,但它没有出现,我不知道为什么。我已经完成了 Android 教程,并回顾了代码以及许多其他来源。目标是在按钮打开时让程序暂停。目前,该按钮甚至不会出现在用户界面上。有什么建议么?
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
<ToggleButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:onClick="pauseCounter" />
</RelativeLayout>
package com.evorlor.counter;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent counter = new Intent(MainActivity.this, Counter.class);
startActivity(counter);
}
public void pauseCounter(View view) {
Intent pause = new Intent(this, Pause.class);
startActivity(pause);
}
// @Override
// public boolean onCreateOptionsMenu(Menu menu) {
// // Inflate the menu; this adds items to the action bar if it is present.
// getMenuInflater().inflate(R.menu.activity_main, menu);
// return true;
// }
}
package com.evorlor.counter;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class Pause extends Activity{
public void onCreate(Bundle instPause) {
super.onCreate(instPause);
TextView tv = new TextView(this);
tv.setTextSize(250);
tv.setText("PAUSE");
setContentView(tv);
}
}
这是我的柜台课程。很乱。对不起。这和我到目前为止的距离一样接近。帮助将不胜感激!我在这个微不足道的按钮上花了很多时间!谢谢!
package com.evorlor.counter;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Gravity;
import android.view.MotionEvent;
import android.widget.TextView;
import android.widget.ToggleButton;
public class Counter extends Activity {
private int count = 0;
private int hiCount = 0;
private boolean capCount = false;
public void onCreate(Bundle instCounter) {
super.onCreate(instCounter);
TextView tv = new TextView(this);
tv.setTextSize(250);
if (count < 10000 && capCount == false) {
tv.setText(Integer.toString(count));
} else {
capCount = true;
if (count >= 10000) {
hiCount += 10;
count -= 10000;
}
if (hiCount < 100) {
tv.setText(hiCount + "k+" + count);
} else {
tv.setText("Over\n100k");
}
}
tv.setGravity(Gravity.CENTER);
setContentView(tv);
ToggleButton butPause = new ToggleButton(this);
if (butPause == null) {
Intent pause = new Intent(this, Pause.class);
startActivity(pause);
}
}
// public void pauseCounter(View view) {
// Intent pause = new Intent(this, Pause.class);
// startActivity(pause);
// }
}