我想挣钱的时候,背景是触动了我的烤面包的消息过早地消失。敬酒应该消失的时候,屏幕的每个部分都感动......我知道的方法是.cancel但我不能利用它正确..这是我的尝试:
我试图与.setontouchlistener方法,但它不工作...我在android开发新的,因此,将不胜感激有一个示例代码学习...我会告诉你我的代码,这是它:
public class MainActivity extends AppCompatActivity {
private LayoutInflater layoutInflater;
private RelativeLayout relalayout
private LinearLayout linelayout;
private ScrollView scrollayout;
public Toast toast;
private ImageView backgroundimg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_activitymain);
Bundle extradata1 = getIntent().getExtras();
String textString = extradata1.getString("ImportedData");
TextView mytext = (TextView) findViewById(R.id.text);
relalayout = (RelativeLayout) findViewById(R.id.relalayout);
linelayout = (LinearLayout) findViewById(R.id.linelayout);
scrollayout = (ScrollView) findViewById(R.id.scrolllayout);
backgroundimg = (ImageView) findViewById(R.id.imageView2);
toast = new Toast(this);
if (textString.equals("firstimported")) {
String mytxt = "";
StringBuffer sbuffer = new StringBuffer();
InputStream is = this.getResources().openRawResource(R.raw.firsttext);
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
try {
while ((mytxt = reader.readLine()) != null) {
sbuffer.append(mytxt + "\n");
}
mytext.setText(sbuffer);
is.close();
} catch (Exception e) {
e.printStackTrace();
}
String text = sbuffer.toString();
SpannableString ss = new SpannableString(text);
ClickableSpan clickspan1 = new ClickableSpan() {
@Override
public void onClick(View widget) {
Toast toast = Toast.makeText(MainActivity.this, "this is the toast",
Toast.LENGTH_SHORT);
toast.show();}
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
ds.setColor(Color.WHITE);
ds.setUnderlineText(false);}
};
scrollayout.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
toast.cancel();
return false;
}
});
ss.setSpan(clickspan1, 52, 53, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
mytext.setText(ss);
mytext.setMovementMethod(LinkMovementMethod.getInstance());
}
}
public void onBackPressed() {
Intent intent = new Intent(MainActivity.this, OtherActivity.class);
startActivity(intent);
finish();
}
当我触摸屏的活动崩溃..所以它只是将无法正常工作。
尝试这个
Toast toast;
@Override
public void onClick(View widget) {
toast = Toast.makeText(MainActivity.this, "this is the toast", Toast.LENGTH_SHORT);
toast.show();
}
scrollayout.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(toast != null)
toast.cancel();
return super.onTouch(v, event);
}
});
更新应答按代码
public class MainActivity extends AppCompatActivity {
private ScrollView scrollayout;
public Toast toast;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_activitymain);
TextView mytext = (TextView) findViewById(R.id.text);
scrollayout = (ScrollView) findViewById(R.id.scrolllayout);
StringBuffer sbuffer = new StringBuffer();
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
sbuffer.append("1234567890\n");
String text = sbuffer.toString();
SpannableString ss = new SpannableString(text);
ClickableSpan clickspan1 = new ClickableSpan() {
@Override
public void onClick(View widget) {
toast = Toast.makeText(MainActivity.this, "this is the toast", Toast.LENGTH_SHORT);
toast.show();
}
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
ds.setColor(Color.WHITE);
ds.setUnderlineText(false);
}
};
scrollayout.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (toast != null) {
toast.cancel();
toast = null;
}
return false;
}
});
ss.setSpan(clickspan1, 52, 53, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
mytext.setText(ss);
mytext.setMovementMethod(LinkMovementMethod.getInstance());
}
}
我已经改变了,你作为我没有全部资源的一些价值观,但你需要做的主要变化是在ClickSpan初始化和scrolllayout触摸事件。请对它们进行比较。我得到了与滚动以下输出敬酒已被证明之后。
道歉长尺寸的gif。
您必须声明你的活动的变量Toast
对象
private Toast toast;
然后初始化它在你的onClick方法:
toast = Toast.makeText(MainActivity.this, "this is the toast",Toast.LENGTH_SHORT);
toast.show();
此外,在您的onTouch
你应该检查敬酒对象为空:
if(toast != null){
toast.cancel();
}
Toast.makeText返回敬酒的对象。调用取消()这个对象就取消它。