Java 如何在 Android Studio 中使用延迟功能？
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How to use delay functions in Android Studio?
提问by R.Sahin Altunbas
I want to send a character with Bluetooth. The code works perfectly when there is only a single character.But I want to use a delay function between the two codes. I want to enter any number with EditText and the app will take that number and do EditText/44. That is what I want to wait between 2 codes
我想用蓝牙发送一个字符。当只有一个字符时，代码运行良好。但我想在两个代码之间使用延迟函数。我想用 EditText 输入任何数字，应用程序将采用该数字并执行 EditText/44。这就是我想在 2 个代码之间等待的
Finally work.. Thanks guys. :)
终于工作了..谢谢大家。:)
I moved a,b,c inside setOnClick.. ;
我在 setOnClick.. 中移动了 a,b,c
kileri = (Button) findViewById(R.id.kileri);
final EditText value1 = (EditText) findViewById(R.id.textkont);
assert value1 != null;
value1.setText("0");
btAdapter = BluetoothAdapter.getDefaultAdapter();
checkBTState();
kileri.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
int a = Integer.parseInt(value1.getText().toString());
int b = a / 44;
int c = b * 1000;
sendData("F");
try {
Thread.sleep(c);
} catch (Exception e) {
e.printStackTrace();
}
采纳答案by Vanraj Ghed
try {
//set time in mili
Thread.sleep(3000);
}catch (Exception e){
e.printStackTrace();
}
edited as your code
编辑为您的代码
kileri.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
sendData("F");
try {
//set time in mili
Thread.sleep(3000);
}catch (Exception e){
e.printStackTrace();
}
sendData("S");
}
});
回答by Mohit Charadva
You can do like this
你可以这样做
kileri = (Button) findViewById(R.id.kileri);
final EditText value1 = (EditText) findViewById(R.id.textkont);
assert value1 != null;
value1.setText("0");
final int a = Integer.parseInt(value1.getText().toString());
final int b = a/22;
final int c = b/2; // It will take a int from Edittext and do this operation on that.
btAdapter = BluetoothAdapter.getDefaultAdapter();
checkBTState();
kileri.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
sendData("F");
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
sendData("S");
}
}, c);
}
});
回答by Krishna
You can use handler
您可以使用处理程序
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
//do something
}
}, 2000 );//time in milisecond
回答by Iamat8
just use runOnUiThreadon button click and post Handlerafter time delay..
只需使用runOnUiThread按钮单击并Handler在延时后发布..
Button button = new Button(this);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sendData("F"); // send
delay(2000);
}
});
UPDATE
更新
delay()..
延迟（）..
public void delay(final int c){
runOnUiThread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(c);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
sendData("S"); //send
}
}, c);
}
回答by Jay
Use handler like this:
像这样使用处理程序：
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// do something after 2s = 2000 miliseconds
}
}, 2000); //Time in milisecond
