public static void screenshot(final String screenshotName) {
// Use Espresso to find the Activity of the Root View. Using a ViewMatcher guarantees that
// the Activity of the view is RESUMED before taking the screenshot
Espresso.onView(ViewMatchers.isRoot())
.perform(
new ViewAction() {
@Override
public Matcher<View> getConstraints() {
return ViewMatchers.isDisplayed();
}
@Override
public String getDescription() {
return "taking screenshot of the Activity";
}
@Override
public void perform(UiController uiController, View view) {
final Activity activity = scanForActivity(view.getContext());
if (activity == null) {
throw new IllegalStateException(
"Couldn't get the activity from the view context");
}
if (!TAG_PATTERN.matcher(screenshotName).matches()) {
throw new IllegalArgumentException(
"Tag may only contain the letters a-z, A-Z, the numbers 0-9, "
+ "underscores, and hyphens");
}
try {
File screenshotDirectory =
getFilesDirectory(activity.getApplicationContext(), Locale.getDefault());
String screenshotFileName =
screenshotName + NAME_SEPARATOR + System.currentTimeMillis() + EXTENSION;
File screenshotFile = new File(screenshotDirectory, screenshotFileName);
takeScreenshot(activity, screenshotFile);
Log.d(TAG, "Captured screenshot \"" + screenshotFileName + "\"");
} catch (Exception e) {
throw new RuntimeException("Unable to capture screenshot.", e);
}
}
private Activity scanForActivity(Context context) {
if (context == null) {
return null;
} else if (context instanceof Activity) {
return (Activity) context;
} else if (context instanceof ContextWrapper) {
return scanForActivity(((ContextWrapper) context).getBaseContext());
}
return null;
}
});
}
public void testChangeText() {
// 获取某个View
ViewInteraction viewFocus = Espresso.onView(ViewMatchers.withId(R.id.et));
// 执行某个动作
viewFocus.perform(ViewActions.clearText());
viewFocus.perform(ViewActions.typeText("new"));
TextView tv = (TextView) activity.findViewById(R.id.et);
// 检查结果
EspressoTest.assertEquals("new", tv.getText() + "");
}
public void testButtonClick() {
Espresso.onView(ViewMatchers.withId(R.id.btnTest)).perform(ViewActions.click());
}