如何使Android手机的手电筒闪烁? [英] How to make android phone flashlight blink?
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问题描述
我想基于二进制code一样,如果CHAR = 1回合的LED亮,否则,如果CHAR = 0打开LED熄灭,使Android手机闪烁的LED手电筒。
I am trying to make the LED flashlight of android phone blink based on binary code like if char = 1 turn LED light on else if char = 0 turn LED off.
if ( char == '1'){ params.setFlashMode(Parameters.FLASH_MODE_ON); }
if ( char == '0'){ params.setFlashMode(Parameters.FLASH_MODE_OFF);}
所以,我从一个字符串str中的字符=101010101
焦炭得到的值1,0,1等,这是应该做的手电筒眨眼,但它闪烁的人,就是这样。我应该如何解决这个问题?
谢谢
So I get the char from a String str ="101010101"
the char gets the values 1, 0, 1 and so on, which is supposed to make the flashlight blink, however it blinks ones and that's it. How should I fix this problem?.
Thanks
推荐答案
试试这个:
String myString = "0101010101";
long blinkDelay 50; //Delay in ms
for (int i = 0; i < myString.length(); i++) {
if (myString.charAt(i) == '0') {
params.setFlashMode(Parameters.FLASH_MODE_ON);
} else {
params.setFlashMode(Parameters.FLASH_MODE_OFF);
}
try {
Thread.sleep(blinkDelay);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
如果没有视频下载()你的code可能是太快了。
Without the "Thread.sleep()" your code is probably too fast.
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