![](/img/trans.png)
[英]How to stop blinking on recycler view with architecture components paging library
[英]Stop view blinking thread
如果接受true,我有啟動閃爍視圖線程的函數,但是如果收到false,如何停止線程?
private void blinkText(boolean b){
final Handler handler = new Handler();
if(b)
{
new Thread(new Runnable() {
@Override
public void run() {
int timeToBlink = 1000; //in ms
try{
Thread.sleep(timeToBlink);
}catch (Exception e) {
}
handler.post(new Runnable() {
@Override
public void run() {
TextView txt = (TextView) findViewById(R.id.tv);
if(txt.getVisibility() == View.VISIBLE){
txt.setVisibility(View.INVISIBLE);
}else{
txt.setVisibility(View.VISIBLE);
}
blinkText(true);
}
});
}}).start();
}
else
{
// stop blinking
}
}
您可以在xml中定義一個閃爍的動畫,並將其初始化后添加到textview中:
RES /動畫/ blink.xml
<?xml version="1.0" encoding="utf-8"?>
<alpha
android:fromAlpha="0"
android:toAlpha="1"
android:duration="200"
android:repeatMode="reverse"
android:repeatCount="infinite"
xmlns:android="http://schemas.android.com/apk/res/android">
</alpha>
添加動畫以查看:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_button);
TextView textView = (TextView) this.findViewById(R.id.textview);
Animation blink = AnimationUtils.loadAnimation(this, R.anim.blink);
textView.setAnimation(blink);
}
開始:
textView.getAnimation().start()
停止:
textView.getAnimation().cancel()
textView.getAnimation().reset()
您需要創建一個布爾字段作為類成員(boolean mStopBlink = false;),並跟蹤TextView當前是否閃爍:
txt.setVisibility(View.VISIBLE);
if(!mStopBlink){
txt.setVisibility(View.INVISIBLE);
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