app: Add app related features

app.go

@@ -0,0 +1,61 @@
+package goadb
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// Get the current focussed app package name
+func (d *Device) GetCurrentAppPackage() (string, error) {
+	data, err := d.RunCommand("shell dumpsys activity activities | grep ResumedActivity")
+	re := regexp.MustCompile(`\b([a-zA-Z0-9._]+)/(?:[a-zA-Z0-9._]+)\b`)
+	matches := re.FindStringSubmatch(string(data))
+
+	if len(matches) > 1 {
+		return matches[1], nil
+	} else {
+		return "", nil
+	}
+	return "", err
+}
+
+// Get the pid for a app
+func (d *Device) GetAppPid(appackage string) (int, error) {
+	data, err := d.RunCommand(fmt.Sprintf("shell pidof %s"))
+	if err != nil {
+		return -1, err
+	}
+
+	pid, err := strconv.Atoi(strings.TrimSpace(string(data)))
+	if err != nil {
+		return -1, err
+	}
+
+	return pid, nil
+}
+
+// Check if a app is running
+func (d *Device) CheckAppRunning(appackage string) (bool, error) {
+	pid, err := d.GetAppPid(appackage)
+	if err != nil {
+		return false, err
+	}
+	if pid != -1 {
+		return true, nil
+	}
+	return false, nil
+}
+
+// Start a app using the package name
+func (d *Device) StartApp(appackage string) error {
+	_, err := d.RunCommand(fmt.Sprintf("shell monkey -p %s -c android.intent.category.LAUNCHER 1", appackage))
+	return err
+}
+
+// Force kill a running app
+func (d *Device) KillApp(appackage string) error {
+	_, err := d.RunCommand(fmt.Sprintf("shell am force-stop %s", appackage))
+	return err
+}